Capacity Utilisation Rate

Capacity utilisation rate refers to the ratio of an enterprise's or industry's actual production output to its designed or nameplate capacity. It serves as a core benchmark for evaluating manufacturing efficiency and the extent of potential supply surplus. In the automotive sector, capacity utilisation directly reflects the operational activity of carmakers' assembly lines, with 75% to 85% generally regarded as the healthy operational threshold. Figures above this range point to tight capacity and potential supply shortages, whilst numbers below signal idle production lines and mounting overcapacity risks. Ultimately, capacity utilisation is a critical barometer for assessing automotive supply-demand dynamics, corporate operational health, and broader industry structural adjustments.

Measuring Capacity Utilisation

The standard calculation for capacity utilisation is: Capacity Utilisation Rate = Actual Output ÷ Designed Capacity × 100%. Actual output is typically measured by vehicle build volume (units) or production-converted standard working hours, whilst designed capacity represents the maximum theoretical output achievable under ideal conditions with machinery running at full load.

In practice, statistical scopes vary across reporting bodies. The National Bureau of Statistics (NBS) metric covers the wider automotive manufacturing sector—including complete vehicle assembly, parts, and accessories—with a primary focus on enterprises above a designated scale. Conversely, industry bodies often evaluate total vehicle assembly capacity against total sales volume separately. This leads to distinct disparities in data: the NBS reported an industry-wide capacity utilisation rate of 70.6% in the first half of 2026, whereas calculations based on a total vehicle assembly capacity of 40 million units against domestic demand of under 22 million units put vehicle assembly utilisation below 70%. Furthermore, a sharp structural divide exists between "advanced" and "outdated" capacity: leading new energy vehicle (NEV) carmakers such as BYD have sustained utilisation rates above 80% over the long haul, even exceeding 99.5% for four consecutive years, whereas legacy joint ventures and marginal marques languish well below healthy thresholds.

Current State of China's Automotive Capacity Utilisation

In recent years, capacity utilisation across China's automotive industry has consistently remained below the healthy benchmark. NBS data shows that capacity utilisation in automotive manufacturing from 2021 to 2024 stood at 74.7%, 72.7%, 74.6%, and 72.2% respectively, failing to stably breach the 75% mark. The industry-wide average hovered around 73% in 2025 before softening further to 70.6% in the first half of 2026 (down 1 percentage point year-on-year), with the second quarter registering 70.8%.

The industry's structural disparity is glaring. Top-tier carmakers maintain relatively high capacity utilisation (such as AITO and other front-runners), whereas weaker domestic marques and joint-venture brands—hobbled by sluggish NEV transitions and lagging product competitiveness—have seen utilisation rates linger below 50%. Some assembly plants operate at an actual run rate of just 16.2%, while fringe carmakers fall below 10%, effectively turning into "zombie carmakers". Established joint-venture manufacturers such as SAIC-GM, Dongfeng Honda, and GAC Toyota have also seen utilisation rates compressed to between 40% and 60%. This structural dilemma of "tight at the top, idle at the bottom" forms the crux of the current overcapacity predicament.

From a global perspective, China's 73% average automotive manufacturing utilisation in 2025 was still higher than the US motor vehicles and parts sector (66%), the US automotive and light-duty vehicle segment (61%), and Thailand (51%). This indicates that China's overcapacity is not inherently more severe in aggregate volume than overseas markets, and that structural imbalances remain the underlying issue.

Causes and Repercussions of Overcapacity

Supply-side investment inertia is one of the primary drivers. Vehicle assembly plants require long gestation periods and heavy capital outlay; substantial capacity planned during previous high-growth phases came on stream en masse just as industry growth slowed, making short-term market absorption difficult. Furthermore, dedicated internal combustion engine (ICE) production lines cannot easily be converted for NEV production, accelerating the stranding of legacy manufacturing assets.

Slowing market demand represents another critical headwind. China's automotive market has transitioned from rapid expansion to a zero-sum battle for existing market share. Vehicle sales contracted year-on-year in the first half of 2026, yet carmakers showed no signs of scaling back new model launches or capacity additions. The convergence of surplus supply and muted demand has forced carmakers into continuous promotional price cuts, dragging complete vehicle manufacturing profit margins down to 1.5% in the first half of 2026—a ten-year low.

Subdued capacity utilisation impacts the automotive ecosystem on multiple levels: fixed-cost amortisation pressures intensify, driving up unit manufacturing costs; carmakers are forced into fierce price wars to recover operating cash flows, triggering a vicious cycle of heavy discounting and margin erosion; and industry profits continue to migrate upstream towards battery and semiconductor suppliers, leaving vehicle assembly as the thinnest-margin segment in the value chain.

Structural Realignment and Market Rationalisation

A clear consensus is taking shape across the industry on how to address overcapacity. On the policy front, authorities including the Ministry of Industry and Information Technology (MIIT) are stepping up capacity oversight and curbing fresh expansion, signalling that domestic OEM capacity rollouts have passed their peak. On the market front, capacity shakeouts are expected to remain confined to vulnerable small-to-midsize OEMs rather than triggering a systemic wave of insolvencies. This orderly market consolidation is supported by cyclical sector demand, strong overseas export momentum, carmakers' asset monetisation capabilities, and comparatively sound balance sheets characterised by low gearing and resilient operating cash flows.

Industry observers broadly view the current low capacity utilisation as an inevitable growing pain as the automotive sector pivots from volume-driven expansion to value creation, and from sheer scale to sustainable, high-quality development. Deepening supply-side reforms, decommissioning inefficient assembly lines, and accelerating global export drives to absorb surplus capacity remain the most effective avenues for resolving this structural imbalance.