Toyota’s Co-Prosperity Dilemma: Competing in the Age of EV and Electrification

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The hallway outside the twelfth-floor procurement war room at Toyota City headquarters was unusually quiet. Inside, Hiroshi Tanaka, Executive Vice President for Purchasing and Supplier Development, studied a cost benchmarking report projected onto the wall. The comparison was stark. Chinese EV manufacturers such as BYD were selling popular electric SUVs like the Song Plus in China at prices significantly below comparable hybrid SUVs offered by established global brands, including Toyota.¹ In an increasingly intense price war, BYD’s combination of large-scale production, in-house battery manufacturing, and tight vertical integration had created double-digit price gaps that foreign automakers struggled to close.² This case is fictionalized for teaching purposes. Names, dialogues, and internal deliberations are illustrative and designed for classroom analysis.³

For a company whose procurement culture had been built on stability and co-prosperity with suppliers, this was more than a routine cost challenge. It struck at the core of how Toyota had conducted business for decades. To approach BYD’s price point, Toyota would need to remove thousands of dollars from the bill of materials on a typical electrified SUV. Incremental efficiency measures alone would be insufficient. Achieving reductions of that magnitude would require actions that ran against the system Toyota had spent decades constructing: long-term supplier relationships, shared improvement instead of sudden price cuts, and loyalty to domestic partners whose capabilities and commitments supported Toyota’s reputation for quality and reliability.⁴

The external environment around Toyota had shifted quickly. Electrification was restructuring value pools across the sector. Batteries and software, rather than engines and transmissions, were becoming the main drivers of cost and differentiation. Global EV reports highlighted how battery pack costs, software-defined vehicle architectures, and charging ecosystems had become central to competitiveness in passenger vehicles.⁵ Software-defined vehicles compressed development cycles and blurred the line between automotive engineering and consumer electronics. Vertical integration, once seen as a risky and capital-intensive strategy, had become a strong competitive weapon when applied by firms such as BYD, which combined battery plants, semiconductor capacity, and vehicle assembly within a single corporate system.² At the premium end of the market, Tesla advanced a different frontier: over-the-air software updates, a proprietary software stack, and direct-to-consumer digital interfaces that raised customer expectations regarding how a car should behave and evolve in daily use.

Toyota now found itself squeezed between two competitors that used very different strategic logics. Tesla competed on speed, software, and brand. BYD competed on cost, scale, and control of critical electric components.² Toyota’s own model, grounded in Kyosei (mutual prosperity) and Kaizen (continuous improvement), emphasized reliability, stability, and long-term partnerships.⁶ Within the framework widely known as “The Toyota Way,” the company articulated two core pillars, Continuous Improvement and Respect for People, which shaped both internal operations and expectations placed on suppliers.⁷ As Tanaka prepared to brief the senior leadership team, a central question surfaced: could Toyota adapt its procurement culture fast enough to compete in an electrified and digitized industry without abandoning the philosophy that had underpinned its success?

Toyota’s Relational Procurement Philosophy

Toyota’s procurement system rested on a distinctive view of how firms and suppliers should collaborate. Since the early postwar decades, internal guidance such as the Purchasing Staff Handbook framed the mission of purchasing as securing the best possible products at the lowest possible cost, in the most timely manner, and on a stable long-term basis.⁸ In practice, this language was not interpreted as permission for relentless price cutting. It was understood as a mandate to build fair, durable commercial relationships that would allow both Toyota and its suppliers to prosper together.

This ethos appeared clearly in Toyota’s language toward partners. Official statements described automobile manufacturing as “a joint endeavor with suppliers and Toyota” and stressed that the company aimed to “build relationships with suppliers that enable us to grow and develop together.”⁹ In its Supplier Sustainability Guidelines, revised in 2022, Toyota stated that it aimed to provide “high-quality and attractive products at affordable prices” while respecting human rights, the environment, and legal compliance across the supply chain.¹⁰ Co-prosperity was not only rhetorical. It was embedded in expectations around fair transactions, long-term capability building, and shared responsibility for risk.

The broader philosophy was codified and popularized as “The Toyota Way,” which stressed Continuous Improvement and Respect for People as central organizational values.⁷ Continuous Improvement required ongoing refinement of processes and products. Respect for People required that workers and partners be treated as thinking contributors instead of interchangeable cost items. This combination shaped Toyota’s approach to suppliers: procurement was expected to support mutual development, not only to minimize short-term cost.

Many key suppliers had worked with Toyota for decades. Partnerships of twenty years or more were common among Tier 1 suppliers in Japan, a duration significantly longer than typical turnover cycles in cost-driven Western procurement systems.⁹ Toyota’s relationships were supported by supplier associations known as kyoryokukai (“cooperation associations”), such as Kyohokai and Eihokai, which organized joint improvement activities, benchmarking, and capability-building programs across the supplier base.¹¹ These associations, studied by researchers at the University of Tokyo, acted as structured forums in which Toyota shared its production philosophy, disseminated the Toyota Production System (TPS), honored high-performing suppliers through awards, and set collective improvement targets.¹¹

Within its domestic keiretsu structure, Toyota shared demand forecasts, technological roadmaps, and cost-reduction targets with suppliers. It avoided sudden unilateral price cuts that could push partners into financial distress.⁹ Even during periods of raw-material price volatility, Toyota relied on pre-agreed adjustment formulas rather than opportunistic renegotiation, seeking a balance between cost discipline and supplier continuity.¹⁰ Across the Toyota Group, companies such as Toyota Boshoku expressed similar expectations, including commitments to quality, cost, delivery, technology development, and continuous improvement as the basis for purchasing relationships.¹² Stability and fairness were treated as prerequisites for long-term competitiveness, not as obstacles.

At the network level, this relational architecture was reinforced by the concept of “supplier associations,” which scholars describe as organized groups of suppliers around a dominant manufacturer used for training, information sharing, and joint programs.¹³ In Japan, such associations became important mechanisms for embedding a manufacturer’s production philosophy and for strengthening coordination across complex multi-tier supply chains. Toyota’s supplier associations played exactly this role: they provided a formal structure through which Kyosei and the Continuous Improvement pillar of The Toyota Way were translated into daily practice.⁷,¹¹

Kaizen as Operational Counterpart

Kaizen, a Japanese term that literally means “change for better,” refers to a philosophy of continuous improvement involving all employees and all processes.¹⁴ In Toyota’s context, Kaizen functions as the operational counterpart to Kyosei in the supplier network. Within the Toyota Production System, Kaizen expresses a clear expectation: every process can be improved, and every worker and partner shares responsibility for identifying better ways to perform the work.¹⁵

Toyota’s Supplier Sustainability Guidelines explicitly encourage suppliers to adopt this mindset. The document calls on partners to conduct “continuous improvement activities” in quality, cost, and delivery, and frames improvement as a joint endeavor supported by genchi genbutsu (“go and see”) and close on-site collaboration.¹⁰ Toyota’s Operations Management Consulting Division (OMCD) plays a central role in this process. Case studies on supplier development at Honda, Nissan, and Toyota describe how OMCD dispatches experts to supplier sites, teaches TPS concepts, and supports structured Kaizen projects that redesign processes and remove waste.¹⁶

Toyota Times articles show how this collaborative improvement appears in practice. In the feature “Turning Concern into Confidence,” Toyota engineers visit suppliers, walk the lines with them, and use TPS tools to improve work content and remove bottlenecks.¹⁷ A follow-up article describes how weekly plant visits and joint Kaizen workshops help suppliers build “work improvement capability” and become more autonomous in problem solving.¹⁸ The tone in these stories stresses that Toyota’s role is to “make work easier for suppliers,” not to burden them with one-sided demands.¹⁷

Engineers from Toyota visit supplier facilities to review process flows, introduce low-cost mechanical devices such as karakuri, reduce inventories and lead times, reorganize factory layouts, and refine inspection practices.¹⁵ The objective is not only to reduce unit prices but to remove waste, stabilize quality, and build shared capabilities. Toyota and its Group companies, including Toyota Boshoku, explicitly expect suppliers to pursue improvements in Quality, Cost, and Delivery (QCD) while enhancing safety and environmental performance.¹²

Cost reductions are expected to result from Kaizen activities rather than from compressing margins by negotiation alone. Annual cost-reduction targets are usually modest but steady, and they are pursued through process redesign, defect reduction, standardized work, and better line balancing instead of one-time price cuts.¹⁰ Over time, this approach has created a supplier ecosystem with predictable quality and low defect rates. External surveys of vehicle reliability in major markets frequently rank Toyota and Lexus near the top of the industry, strengthening perceptions that the company’s products offer a low total cost of ownership over their lifetime.¹⁹

Exhibit 1. The Toyota Way and Kaizen in Supplier Relations

Element	Description	Evidence / Source
Core philosophy	Two pillars: Continuous Improvement and Respect for People	The Toyota Way⁷
Supplier expectation	Joint pursuit of quality, cost, and delivery goals through continuous improvement	Supplier Sustainability Guidelines¹⁰
Role of OMCD	Dispatch experts to suppliers, teach TPS, lead Kaizen projects	Supplier development case¹⁶
On-site collaboration	Weekly plant visits, genchi genbutsu, work content review, line balancing	Toyota Times features¹⁷ ¹⁸
Objective of Kaizen	Remove waste, stabilize quality, build capabilities, not only reduce purchase price	TPS descriptions¹⁵
QCD and CSR integration	Quality, cost, delivery linked with safety and environmental expectations for suppliers	Toyota Boshoku guidelines¹²

Toyota’s Win-Win Procurement Model

Taken together, these practices form what insiders and observers often describe as a Win-Win Procurement Model. This model rests on five mutually reinforcing pillars: Mutual Growth Culture, Supplier Integration, Kaizen Philosophy, Resilience through Loyalty, and Knowledge Sharing.

Mutual Growth Culture supports long-term, trust-based relationships. Toyota’s sustainability communications identify “mutual growth based on mutual trust” as a guiding principle in dealings with suppliers and state that procurement aims to realize sustainable development for Toyota and its supply chain partners together.⁶,¹⁰ Studies of Toyota’s supplier associations show that Kyohokai and Eihokai provide an institutional framework for this mutual growth, with joint improvement targets, shared training programs, supplier awards, and cross-company problem-solving networks that extend beyond transactional contracts.¹¹

Supplier Integration allows deep technical collaboration to be embedded in daily operations. Toyota and its suppliers engage in joint development, shared quality circles, and collaborative problem solving grounded in TPS methods.⁹,¹⁶ In addition to OMCD activities, Toyota’s supply chain management stresses lean logistics and close coordination, aligning production schedules and delivery routines to reduce inventories and lead times.²⁰ Case-based and practitioner analyses describe how Toyota’s supply chain strategy uses long-term relationships to support both cost reduction and steady technological advancement.²¹,²²

Kaizen Philosophy, as an explicit expectation, turns continuous improvement into a shared operational norm across the network.¹⁵ Toyota’s Code of Conduct states that all employees should “pursue continuous improvement and innovation,” and this expectation extends to external partners through supplier guidelines and procurement policies.²³ Over time, Kaizen becomes a common language that allows Toyota and its suppliers to tackle problems in a structured and collaborative way.¹⁰,¹⁶

Resilience through Loyalty has become a crucial strategic asset, especially during crises. The 1997 Aisin fire, which destroyed a plant producing critical brake valves, is a classic example. In response, numerous Toyota suppliers cooperated and produced unfamiliar components to restore supply within days, which allowed Toyota to resume production faster than many observers predicted.²²,²⁴ Research on Toyota’s supply chain network shows that this mutual-aid behavior is supported by a “small-world” structure that combines dense local clusters with bridging ties, and this structure promotes both robustness and rapid information sharing.²⁵ System-dynamics modeling of Toyota’s supplier policies reaches similar conclusions. It finds that supporting suppliers during downturns and maintaining investment in their capabilities reduces long-term quality risk and improves system resilience, while policies that push suppliers to cut investment in response to cost pressure tend to raise defect rates and vulnerability.²⁶

Knowledge Sharing increases the learning capacity of the entire ecosystem. The University of Tokyo study on Toyota’s supplier associations documents how TPS diffusion occurs through formal training, best-practice circulation, cross-company visits, and benchmarking inside Kyohokai and Eihokai.¹¹ Toyota Boshoku’s procurement guidelines, external blogs on Toyota’s supply chain, and supplier development cases highlight Toyota’s view of supplier education as an ongoing responsibility.¹²,¹⁶,²¹,²² Instead of holding know-how only at the OEM level, Toyota promotes capability uplift across its keiretsu. Over more than three decades, these practices have helped shift Toyota’s supplier base from a static cost structure to a dynamic learning system.

Exhibit 2. Toyota Supplier Associations and Knowledge Sharing

Mechanism	Role in the Network	Evidence / Source
Kyohokai and Eihokai	Formal supplier associations for TPS diffusion, training, joint targets, and awards	MMRC Working Paper on Toyota¹¹
Supplier training	Classroom and on-site TPS education, OMCD-led workshops, joint problem solving	Supplier development case¹⁶
Best-practice sharing	Cross-company visits, benchmarking, circulation of improvement examples	MMRC paper¹¹
Evaluation and awards	Annual performance reviews, recognition for QCD and improvement contributions	MMRC paper¹¹
Group CSR expectations	Translation of Toyota Group QCD and CSR policies into supplier checklists and guidelines	Toyota Boshoku guidelines¹²
Network structure	Small-world topology that supports resilience and fast information flow	Oxford robustness study²⁵

Analysts sometimes label this configuration as Toyota’s “cultural resilience” strategy: a network of long-term relationships, shared methods, and mutual commitments that generates reliable vehicles and relatively stable cost trajectories.¹⁹ Yet this same system now faces stress. Electrification, software, and new entrants are altering the economic structure of the industry. Toyota must test whether a Win-Win procurement model designed for stability and incremental improvement can adjust to an environment driven by speed, capital-intensive technologies, and platform-level disruption.

Western Cost-Driven Procurement in Contrast

In much of the Western automotive industry, procurement practice follows a different philosophy. Large OEMs frequently rebid contracts, rotate suppliers, and negotiate aggressive annual price reductions. Supply relationships are often governed by short-term sourcing cycles rather than multidecade partnerships. Studies of automotive purchasing in North America and Europe describe heavy use of competitive bidding, target-price mandates, and sharp cost-down demands tied to model-year timelines.²⁷

This approach can create fast margin gains but also introduces instability into the supply base. When suppliers face constant margin pressure and the ongoing risk of replacement, they often respond by cutting discretionary spending on R&D, preventive maintenance, and workforce development. Over time, these cuts can erode quality, raise defect rates, and reduce the capacity to co-develop new technologies, including advanced driver-assistance systems and EV powertrains.²⁸ Fragmented sourcing strategies spread across multiple low-cost regions with frequent supplier turnover also increase logistics complexity and exposure to geopolitical risk.

The understanding of cost differs sharply between the two systems. Western OEMs often focus on purchase price, meaning the unit price paid for a component in a given year. Toyota instead frames cost using a Total Cost of Ownership lens. Its sustainability reports stress that product value must be assessed over the full life cycle, including durability, safety, maintenance, and environmental impact.⁶,²⁹ A component that is slightly more expensive at purchase may still be preferable if it reduces warranty claims, extends product life, and lowers disposal costs.

Innovation paths differ as well. In systems with high supplier churn, knowledge tends to dissipate or reset when contracts move to new vendors. Long-term technological roadmapping and joint investment in emerging capabilities become harder to sustain. In Toyota’s keiretsu, supplier capability building and joint improvement programs create a rising baseline of technical competence that can be applied across multiple generations of vehicles.¹¹,¹⁶ As the industry shifts toward electrification, batteries, semiconductors, and software, the cost of fragmented relationships and short time horizons grows.

Exhibit 3. Toyota Win-Win Model vs Cost-Driven Procurement

Dimension	Toyota Win-Win Model	Cost-Driven Model (typical Western / BYD trend)	Key Sources
Time horizon	Long-term, multidecade relationships	Short-term sourcing cycles, frequent rebidding	Choi & Linton²⁷, MMRC¹¹
Basis of cost saving	Process improvement and Kaizen, lower total cost of ownership	Purchase price reduction, yearly cost-down targets	Lee²⁸, Sustainability Data Book²⁹
Supplier role	Co-creator of value, partner in innovation	Interchangeable vendor, subject to competition on price	The Toyota Way⁷, Reuters²
Knowledge transfer	Formal supplier associations, OMCD, TPS training	Limited, often reset when suppliers change	MMRC¹¹, supplier development¹⁶
Crisis resilience	Mutual aid, network robustness, priority allocation in shocks	Less loyalty, higher risk of supply denial during disruptions	Aisin fire²² ²⁴, robustness study²⁵
Innovation support	Encourages supplier R&D through stable demand and joint projects	Price pressure discourages long-term, risky R&D investment	System dynamics²⁶, EV competition³⁴

A number of analysts argue that BYD’s approach to cost leadership is not an anomaly but a prominent example of a global trend toward cost-driven and transactional procurement in the EV industry. BYD’s extensive vertical integration, fast internalization of critical components such as batteries and power electronics, and price-first strategic logic reflect dynamics similar to those observed in cost-focused procurement systems, where frequent rebidding and strict target-price mandates dominate sourcing decisions.²,²⁷ In this sense, BYD represents not only a single competitive threat but also a broader structural direction in the EV supply chain, in which speed, scale, and strong cost control increasingly overshadow long-term relational stability.

Procurement Consolidation Strategy: Domestic vs Global

As electrification accelerated, Toyota faced a pivotal procurement decision: whether to consolidate sourcing more tightly within Japan or expand more aggressively into a globally distributed procurement network. Each path offered benefits but also exposed Toyota to distinct structural risks.

A domestically anchored approach aligned with Toyota’s historical strengths. Japan’s supplier ecosystem shared Toyota’s culture of quality, precision, and continuous improvement.¹⁵ A supply chain clustered around Toyota City and other domestic hubs supported close coordination, rapid problem solving, and strong protection of intellectual property. Engineers could move frequently between Toyota facilities and supplier sites, which allowed fast Kaizen cycles and integrated product development.¹⁷ Domestic sourcing also aligned with national efforts to build advanced EV and hydrogen ecosystems, with policy support for innovation in batteries, fuel cells, and low-carbon manufacturing as part of Japan’s 2050 carbon-neutral plans.²⁹

At the same time, domestic consolidation had clear constraints. Japan’s demographic profile and cost structure, including an aging population, relatively high labor costs, and energy price pressures, made manufacturing more expensive than in many competing regions.²⁹ Domestic suppliers faced capacity limits in emerging EV components such as traction batteries and power semiconductors, where global demand was growing faster than Japan’s production base. International analyses of EV supply chains highlight growing concentration of battery and critical-mineral capacity in China and other regions, which raises the risk that a domestically concentrated sourcing strategy could be both costly and capacity constrained.³⁰ Concentrating procurement too heavily inside Japan risked locking Toyota into a higher-cost, slower-scaling supply chain at the very time when EV adoption in major markets was steepening.³⁰

Global distributed procurement offered a different risk–return profile. By diversifying across international suppliers, Toyota could access lower-cost manufacturing bases, specialized component clusters, and regions that hold critical minerals for future battery chemistries. In its corporate profile, Toyota notes that it has production in many countries and sells vehicles in more than 200 markets, using local strengths in different regions.³¹ A more global sourcing strategy could extend this logic deeper into the EV component stack, allowing Toyota to tailor vehicles to regional needs and to benefit from emerging EV hubs such as Indonesia and Thailand, which have positioned themselves as battery and EV manufacturing centers in Southeast Asia.³²

At the same time, expanded global sourcing introduced new vulnerabilities. Quality control became more difficult across a broader network of suppliers operating under different regulatory regimes, labor norms, and industrial standards. Logistics complexity rose, with longer lead times, cross-border coordination, and exposure to shipping disruptions. Geopolitical tensions and export controls affecting batteries, semiconductors, and raw materials such as lithium and nickel added further layers of risk.³⁰ Protection of intellectual property also became more challenging when joint development extended beyond Toyota’s traditional cultural and relational ecosystem.

For Toyota, the choice between domestic consolidation and global expansion was not only an operational question. It was also a test of strategic identity. Doubling down on domestic keiretsu strengths supported the trust-based, high-integration model that had served Toyota well, but it risked weakening price competitiveness in EV segments increasingly dominated by lower-cost producers. Moving further into global sourcing improved flexibility and cost position but threatened to dilute the cultural coherence and shared methods that underpinned Toyota’s reliability and safety record.

In practice, Toyota’s most likely path lay in a hybrid model: retaining core, high-value technologies such as next-generation batteries, hydrogen systems, and key control software with close, often domestic partners, while sourcing more standardized and cost-sensitive components through a broader global network.⁶,²⁹ At the same time, supply-chain commentaries note that Toyota has expanded its use of digital tools and advanced planning systems to manage a more geographically dispersed network while trying to preserve lean principles and close relationships.²¹,²² Even within such a hybrid approach, the tension remained. The emphasis Toyota chose, whether domestic depth or global breadth, would signal how it planned to balance its legacy procurement architecture with the demands of a rapidly changing competitive landscape.

Can Supplier Trust and Cost Efficiency Coexist?

For many years, procurement professionals in the automotive sector have debated whether deep supplier trust can coexist with strict cost efficiency. At first glance, the two concepts seem in tension. Trust implies stable, long-term partnerships and mutual investment. Cost pressure suggests frequent rebidding, hard bargaining, and transactional discipline. Toyota’s experience challenges this simple contrast.

In Toyota’s Win-Win system, cost reductions come from Kaizen-based process improvements rather than from blunt price pressure.¹⁰ Because suppliers work in an environment of stable demand, fair margins, and predictable expectations, they can justify investments in equipment, training, and process innovation. Over time, these investments reduce waste, improve yields, and raise productivity. The resulting cost reductions are steady rather than dramatic, but they are more sustainable and less damaging to relationships.⁹,¹⁶

Cost-based procurement models that stress immediate price savings often create hidden long-term costs. When suppliers must absorb repeated price cuts, they may underinvest in quality systems, delay maintenance, or reduce training. System-dynamics modeling of supplier policies in a Toyota-like network shows that cutting investment in response to short-term pressure tends to raise quality problems over time and increase the risk of defects and delays.²⁶ Empirical studies of manufacturing supply chains link aggressive cost-down practices to higher defect rates and greater recall risk.²⁸ Savings achieved at the purchasing level can be offset by warranty costs, rework, and reputational damage later.

Instability is another serious risk. Firms that frequently change suppliers in pursuit of small price gains may find themselves deprioritized in periods of scarcity. During the global semiconductor shortage, for example, automakers that had maintained stable and collaborative relationships with chip suppliers often secured better allocation than those that treated semiconductors as generic commodities.³⁰ Toyota’s long-term ties and risk-sharing arrangements with key partners helped it navigate such disruptions more effectively than several rivals, consistent with analyses of its network robustness that highlight trust, information sharing, and small-world connectivity.²⁵,²⁹

Logistics and coordination costs also matter. A fragmented supply base across multiple low-cost regions can create administrative overhead, longer transport routes, and higher safety-stock requirements. Much of this complexity remains invisible when managers focus only on purchase price. A Total Cost of Ownership perspective that includes logistics, quality risk, and disruption exposure often shifts the balance back toward more stable, trust-based arrangements.²⁹

The deepest risk of a pure cost-driven model lies in its effect on innovation. In a world where electrification, software integration, and new materials drive differentiation, OEMs need suppliers who are both willing and able to invest in new capabilities. Suppliers that live from contract to contract with thin margins and constant price pressure have weak incentives to fund long-term R&D projects whose payoffs may not appear within a single sourcing cycle. Toyota’s trust-based approach, in contrast, supports joint R&D, shared pilot projects, and co-investment in new technologies.⁶,¹⁶ Supplier development cases emphasize how OMCD and related units work with suppliers to build TPS competencies that improve both cost and innovation capacity, while external commentators note Toyota’s willingness to share knowledge as a key driver of supply-chain performance.¹⁶,²¹,²² Suppliers can justify these investments because they can reasonably expect the relationship to continue.

The question, therefore, is less whether supplier trust and cost efficiency can coexist. They can. The more important question concerns time horizon. Trust-based systems tend to produce compounding benefits over years, through better processes, stronger innovation, and lower disruption risk. Purely cost-driven systems can produce faster savings in the short term but risk cumulative hidden costs and capability loss over time. Toyota’s procurement philosophy suggests that sustainable cost competitiveness arises not from squeezing suppliers but from enabling them, a point that becomes more important as electrification increases both the stakes and the complexity of supply-chain decisions.

Toyota’s Market Position and the Electrification Challenge

By the mid 2020s, Toyota remained one of the world’s largest and most influential automakers. In 2023, the company sold about 11.2 million vehicles globally, which made it the top-selling automaker for the fourth straight year.³³ Toyota’s corporate profile notes its presence in more than 200 countries and regions and its production bases on every major continent.³¹ Its reputation rests on durable vehicles, strong resale values, and a broad portfolio that covers compact cars, SUVs, commercial vehicles, and luxury models.

Regionally, Toyota’s strengths differ. In its home market of Japan, Toyota and its group companies hold a dominant position, supported by dense dealer networks, strong brand loyalty, and vehicles tailored to local regulations and driving conditions.³¹ In North America, Toyota remains one of the best-selling brands, with models such as the RAV4, Camry, and Tacoma often ranking high in sales and reliability surveys.¹⁹ In China, however, Toyota faces a more challenging environment. Domestic automakers, especially BYD and other EV-focused firms, are rapidly building share, particularly in the battery-electric segment, where competitively priced local offerings are expanding quickly.¹,²

Toyota pioneered modern hybrid technology with the Prius in the late 1990s and has accumulated more than 20 million global hybrid sales.⁶ Yet its move into full battery-electric vehicles has been more cautious. Toyota’s public sustainability documents describe a “multi-pathway” approach to carbon neutrality, combining hybrids, plug-in hybrids, BEVs, and hydrogen fuel-cell vehicles.⁶ The company argues that differences in energy infrastructure, customer use patterns, and policy environments across countries require multiple powertrain solutions, not a single global answer.

As global BEV sales rise, led by Tesla and BYD, Toyota has begun to accelerate its own EV roadmap. Its sustainability and investor materials outline plans to launch many new BEV models in the second half of the 2020s, expand battery production capacity with partners, and invest in next-generation battery technologies, including solid-state designs.⁶,²⁹ At the same time, industry reports note that BYD has overtaken Tesla as the world’s largest EV maker by volume, which intensifies pressure on late movers and multi-pathway strategies.³⁴ Despite Toyota’s new initiatives, its share of the global BEV market remains modest compared with pure-EV competitors. Analysts debate whether Toyota’s diversified powertrain approach will prove wise, given uneven EV adoption across regions, or whether it risks leaving the company behind in markets where government policy and consumer demand are moving quickly toward full electrification.³⁰,³⁴

Critical Success Factors in the Electrification Era

Toyota’s long-term success in the electrification era depends on its ability to protect the strengths of its procurement philosophy while also speeding up its EV innovation and cost performance. The trust-based relationships, technical integration, and Kaizen culture that define its Win-Win Procurement Model are central to its reliability and brand equity. If Toyota abandons these features, it would undermine the base of its quality advantage and weaken the supplier ecosystem that supports its global operations.⁶,¹¹

At the same time, the move toward electrification demands speed in areas where Toyota’s traditional systems move slowly. Competitors such as BYD, with vertically integrated battery and component operations, can adjust prices quickly and release new EV variants at a rapid pace.² Tesla and other software-centric firms update digital features and deploy over-the-air software changes, which compresses development feedback loops and reshapes consumer expectations.³⁴

Toyota’s strategic challenge is to combine cultural continuity with technological change. This means evolving the keiretsu into a more flexible and globally competitive network, applying “Digital Kaizen” practices that use data, simulation, and software tools to shorten improvement cycles, scaling battery and EV component production with both domestic and international partners, and shifting from a hybrid-centered identity to a genuinely electrified portfolio while maintaining the quality and safety standards in its sustainability and governance frameworks.⁶,²⁹,³¹ It also means using its supplier associations, OMCD resources, and TPS transfer programs in a way that supports new EV technologies and software, not only traditional components.¹¹,¹⁶,²¹

Whether Toyota can keep this balance of trust and speed, co-prosperity and cost competitiveness, will determine its relevance in an automotive landscape shaped by electrification, software, and global supply-chain realignment. The result will affect Toyota’s own future and provide a wider lesson for firms that have built strong relational advantages in an era now dominated by platform competition and price pressure.

The Strategic Dilemma

Toyota now stands at a pivotal moment that returns directly to the tension introduced at the start of this case. In the procurement war room, Hiroshi Tanaka faced a reality that continues to shape Toyota’s strategic choices. The company can no longer rely only on the strengths of a system built for stability when it faces competitors whose cost structures and development cycles operate at a faster tempo. BYD’s rapid rise, driven by deep vertical integration and strong cost focus, shows the power of the procurement logic that Toyota has traditionally avoided.² At the same time, Toyota’s long-term co-prosperity model, grounded in The Toyota Way, Kaizen, and supplier associations such as Kyohokai and Eihokai, remains the base of its reliability, supplier resilience, and global reputation for quality.⁷,¹¹

The dilemma is clear and unresolved. Toyota must decide whether it can preserve the philosophy of Kyosei and the discipline of Kaizen while moving fast enough to compete in an electrified market shaped by vertical integration, software-defined vehicle platforms, and price wars. The question that Tanaka faced in that quiet twelfth-floor corridor has become the central strategic question for Toyota’s future: can a procurement system built on trust, fairness, and mutual growth be accelerated without being fundamentally changed, or must Toyota adopt elements of the cost-driven model it has long resisted in order to survive the era defined by BYD and electrification?

Endnotes

1. “BYD extends lead in China EV market as price war deepens,” Reuters, April 2024, accessed November 20, 2025.

2. “BYD’s vertical integration drives global EV cost war,” Reuters, January 2024, accessed November 20, 2025.

3. This case is fictionalized for teaching purposes. Names, dialogues, and specific internal deliberations are illustrative.

4. Toyota Motor Corporation, Supplier Sustainability Guidelines, rev. March 2022 (Toyota City: Toyota Motor Corporation, 2022), 1–3.

5. International Energy Agency, Global EV Outlook 2024 (Paris: IEA, 2024), chap. 2, accessed November 20, 2025.

6. Toyota Motor Corporation, “Sustainability,” accessed November 20, 2025, https://global.toyota/en/sustainability/.

7. “The Toyota Way,” Wikipedia, last modified 2024, accessed November 20, 2025, https://en.wikipedia.org/wiki/The_Toyota_Way.

8. For a historical description of Toyota’s purchasing philosophy, see Toyota Motor Corporation, Supplier Sustainability Guidelines, 1–2.

9. Toyota Motor Corporation, Supplier Sustainability Guidelines, 1–4.

10. Toyota Motor Corporation, Supplier Sustainability Guidelines, 3–7.

11. Takahiro Fujimoto and Takanori Yamaguchi, “Toyota’s Supplier Associations and Capability Building,” MMRC Discussion Paper No. 514 (Tokyo: University of Tokyo, Manufacturing Management Research Center, 2019).

12. Toyota Boshoku Corporation, “Purchasing Activities and Procurement Guidelines,” accessed November 20, 2025, https://www.toyota-boshoku.com/global/company/procurement/guideline/.

13. “Supplier association,” Wikipedia, last modified 2024, accessed November 20, 2025, https://en.wikipedia.org/wiki/Supplier_association.

14. “Kaizen,” Wikipedia, last modified 2024, accessed November 20, 2025, https://en.wikipedia.org/wiki/Kaizen.

15. Toyota Motor Corporation, Sustainability Data Book (last update June 2025), 6–8.

16. “Supplier Development at Honda, Nissan, and Toyota,” teaching case, accessed November 20, 2025, via PDFCoffee, https://pdfcoffee.com/supplier-development-at-honda-nissan-and-toyota-pdf-free.html.

17. “Together with Our Suppliers (Part 2): Turning Concern into Confidence,” Toyota Times, accessed November 20, 2025, https://toyotatimes.jp/en/toyota_news/together_with_our_suppliers/002.html.

18. “Together with Our Suppliers (Part 2-2): Steadily Making Changes at the Genba,” Toyota Times, accessed November 20, 2025, https://toyotatimes.jp/en/toyota_news/together_with_our_suppliers/002_2.html.

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