William Li’s lightweighting challenge at NIO

William Li, CEO of NIO, frames lightweighting as a core strategic challenge for NIO and the broader NEV industry. As electric vehicles become heavier due to larger batteries, longer-range ambitions, and added features, competitive advantage will depend on disciplined product trade-offs, advanced materials, and system-level engineering rather than simply increasing battery capacity

William Li, Ceo of NIO, launched the updated Onvo L60 on June, 11 2026

As Chinese new energy vehicles become larger, heavier, and more feature-rich, lightweighting is emerging as a strategic engineering discipline rather than a cosmetic design choice. The challenge is to reduce mass without compromising safety, range, cost discipline, or user experience.

Industry context: the weight challenge

The Nio CEO's call for lightweighting comes as the Chinese auto industry faces a severe vehicle "obesity" crisis. China’s passenger-car market is facing a growing vehicle-weight problem. The average curb weight of new passenger cars reached 1,704 kilograms in 2024, nearly 400 kilograms more than in 2012, according to state broadcaster CCTV in a June 7 report. More worryingly, the weight gain of passenger cars over the past four years has exceeded the total increase of the previous eight years combined, the report noted. 

Much of this increase reflects the shift to electrification, larger battery packs, and the competitive push to offer longer driving ranges and more onboard features. Excellent lightweight design not only saves precious social resources but also significantly improves the vehicle's handling performance, Li said.

Product strategy: restraint as a competitive advantage

William Li, founder, chairman, and CEO of NIO, argues that lightweighting begins with the courage to make product trade-offs, Li said in an interview with local media in Hefei, Anhui province.c Automakers that chase ultra-long ranges under cost pressure often rely on large-capacity lithium iron phosphate battery packs, which add substantial mass. By contrast, models such as Tesla’s Model Y and NIO’s Onvo vehicles reflect greater restraint in battery sizing and a clearer judgment of real user driving scenarios.

Engineering execution: a system-level discipline

The economics of lightweighting become more difficult as a vehicle approaches its target mass. Li noted that reducing a smart electric vehicle from 2.0 tons to 1.9 tons is relatively straightforward, while removing additional kilograms becomes increasingly expensive. In the final stages of research and development, the cost of cutting one kilogram may reach about 1,000 yuan ($148), Li said.

The technical challenge is also systemic. Replacing traditional components with smart fuses, for example, requires redesigning high-voltage and low-voltage architectures and coordinating multiple vehicle subsystems. Stronger engineering capability allows automakers to avoid adding material that increases weight without delivering proportional safety benefits.

Case example: Onvo L60

At the launch of the updated Onvo L60 mid-size electric SUV in Hefei, Anhui, on June 11, 2026, Li highlighted the model’s extensive use of high-strength lightweight materials and a new-generation ultra-thin battery pack. These choices reduce its lightweight coefficient to 2.22, while the rear-wheel-drive version has a curb weight of 1,885 kilograms, generally more than 300 kilograms lighter than comparable pure electric models in the same class, Li said.

Strategic implications

Effective lightweighting improves handling, energy efficiency, material use, and long-term product competitiveness. For NEV manufacturers, the decisive advantage will come not from simply adding battery capacity or features, but from integrating product definition, cost control, materials engineering, and electrical architecture into a disciplined system-level design strategy.