China’s Electric Trucks Are Breaking The Diesel Assumptions In Oil Forecasts

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Oil forecasts that still depend on sustained Chinese road-fuel growth now have a heavy-truck problem. Passenger electric vehicles have already weakened the gasoline story, but freight diesel is the more important system denominator. Commercial trucks operate for longer hours, carry heavier loads and burn far more fuel per vehicle than passenger cars. Electrifying a minority of the most intensively used trucks can therefore remove a disproportionately large share of diesel demand.

China’s heavy-truck electrification programme targets 40% new-energy heavy-truck sales by 2030, more than 1.6 million vehicles in operation and roughly 20% of the national heavy-truck fleet. The plan also targets 18% of highway freight volume, which is the more revealing number. China is not merely trying to put electric drivetrains into one-fifth of its trucks. It is concentrating them in commercially active fleets and high-volume freight operations.

The programme is being built as a freight system rather than a vehicle-sales mandate. It includes approximately 30,000 kilometres of zero-carbon highway freight corridors and about 3,000 heavy-truck charging and battery-swapping stations. Trucks are being connected to depots, logistics parks, ports, mines, highway service areas, repair networks, insurance and distribution-grid planning. Grid companies are being instructed to include truck charging and swapping demand in their investment plans.

That is the distinction oil models risk missing. A few electric trucks in demonstrations are an adoption signal. Electric trucks tied to corridors, depots, grid capacity and repeatable operating routes are a diesel-displacement system. Fleet operators care about uptime, route certainty, energy cost, maintenance, financing and whether a truck can be dispatched tomorrow without special handling. China’s policy is aimed at those operational constraints rather than assuming a purchase subsidy alone will create a market.

The commercial evidence was already moving faster than many forecasts. Electric heavy-truck sales rose sharply in the first half of 2025, reaching about one-quarter of new sales. The growth was concentrated in ports, mines, steel mills and other operations with predictable routes and intensive vehicle use—the applications most capable of removing large amounts of fuel quickly.

A bottom-up screening estimate puts the potential diesel effect in the range of several hundred thousand barrels per day by 2030. That is not an official forecast and should not be treated as a precise outcome. It follows from combining a 20% fleet target with 18% of highway freight volume and concentrating deployment among commercially active trucks. The result depends on annual kilometres, payload, vehicle efficiency, which diesel trucks are scrapped and how much freight growth occurs. It is nevertheless large enough to affect a national oil-demand forecast rather than merely the truck market.

Electric trucks are only one part of the erosion. LNG trucks are not a climate solution, but they displace petroleum diesel from Beijing’s energy-security perspective. Chinese state-linked researchers estimated that LNG heavy trucks could replace about 775,000 barrels per day of diesel by 2030, while passenger EVs were already displacing an estimated 582,000 barrels per day of gasoline in 2025. That said, electric trucks were cutting into LNG truck sales in 2025, and CATL and Sinopec are planning a much higher charging and swapping network than governmental targets. High-speed rail, electric urban logistics and weaker construction activity narrow the transport-fuel growth pool further.

The International Energy Agency has already changed its direction of travel. China added nearly 6 million barrels per day of oil demand between 2015 and 2024, accounting for roughly 60% of global growth over that period. The IEA’s Oil 2025 outlook now expects Chinese demand to peak this decade as EVs, LNG trucks, high-speed rail and structural economic changes weaken road-fuel consumption. That is much closer to the emerging evidence than forecasts that continue to treat China as a durable combustion-growth engine.

OPEC remains more optimistic about long-term oil demand, although even its near-term projections are moving. It cut its 2026 global demand-growth forecast again in July. The important disagreement is no longer whether China alone supplies all future growth. It is whether losses from Chinese road transport can be offset by petrochemicals, aviation, slower electrification elsewhere and growing consumption in other emerging economies. That pathway is possible, but it is not the familiar story of China adding more cars, trucks, road freight and fuel every year.

Crude-import data can temporarily obscure the change. China imported about 11.55 million barrels per day in 2025, while Rystad estimated that stockbuilding accounted for roughly 430,000 barrels per day. Low prices, sanctions discounts, refinery economics, new storage capacity and energy-security policy can keep crude flows high even as gasoline and diesel demand weaken.

That does not rescue the structural demand story. It separates durable consumption from inventory behaviour. If imports remain high because storage is filling, they are a weaker measure of underlying demand. If petrochemicals become the principal remaining growth pool, oil has already lost the expanding road-transport market that made China such a reliable source of global demand growth.

The professional distinction is therefore between an oil-demand plateau and an immediate contraction in crude imports. Forecasting agencies model consumption. Exporters and refiners experience physical flows, inventories, refinery runs, product margins and petrochemical feedstock demand. China can import heavily while filling tanks or taking advantage of discounted crude. Those purchases can delay the visible contraction in headline trade data, but they do not restore the old structural growth path.

China’s target does not require every truck to become electric by 2030. Most will not. The relevant point is that 20% of the fleet, carrying 18% of highway freight and concentrated in high-use corridors, is enough to matter at national diesel scale. It is enough to affect expectations for refinery output, crude imports and global oil-demand growth.

Passenger EVs weakened the gasoline denominator. China’s freight programme is now weakening the diesel denominator. Oil forecasts built around the previous Chinese transport system are increasingly modelling a market that China is already replacing.

Read the full TFIE Strategy Briefing analysis of China’s electric trucks and oil demand for the freight-system denominator, bottom-up diesel screening and distinction between structural demand and crude-import behaviour.