China's Electric Trucks Break Diesel Assumptions as EV-Driven Gasoline Peak Nears

For a decade, oil demand models leaned on a simple bet: China would keep burning more diesel as its economy grew, and any electric-vehicle dent would land on gasoline, not on the freight fleet. That bet is now failing in real time. Battery-electric trucks took 22 percent of new heavy-duty sales in the first half of 2025, up from about 9 percent a year earlier, and by August their share hit 28 percent. Somewhere in that run, electric heavy trucks quietly overtook LNG models in monthly sales. The rigs that were supposed to be diesel's replacement are themselves being replaced.

The consequence is a structural, not cyclical, decline in Chinese diesel consumption. Apparent diesel use fell from about 4.7 million barrels per day in April 2023, the peak in refinery runs, to roughly 4.0 million barrels per day by April 2025. Diesel production dropped about 10 percent year on year in that April. This is the demand curve Western analysts assumed would keep climbing into the 2030s, and it has instead rolled over.

The LNG detour that didn't last

Understanding why this matters requires knowing what electric trucks displaced. For several years the story out of China was liquefied natural gas: cheap LNG made gas-powered trucks the economical choice against diesel, and forecasters built that in. State-linked researchers once estimated LNG trucks could replace as much as 775,000 barrels per day of diesel by 2030. That was the ceiling many analysts treated as the electrification story.

What actually happened is that batteries leapfrogged the gas detour. Diesel's share of light-duty truck sales slid from 69 percent in 2020 to below 50 percent by April 2025. Light-duty electric truck sales climbed from 1 percent of the market to 15 percent over the same stretch, and China sold 256,000 light-duty battery-electric trucks in 2024 alone, a 25 percent jump. Battery-swap trucks, which sidestep long charging waits, rose 94 percent in 2024. When electric truck sales passed LNG truck sales in 2025, it confirmed that the gas bridge was shorter than the market thought. The relative prices of diesel, LNG and electricity now decide which trucks move off dealer lots, and electricity is winning at the margin.

Where the diesel is actually leaving

The displacement is not spread thin across the map. It is concentrated where trucks run hardest: ports, mines, steel mills and short-haul freight corridors that rack up huge daily mileage. Those duty cycles are exactly where a battery truck's lower running cost compounds fastest, and where charging or battery-swap depots are easiest to justify. Rhodium Group's analysis frames this as systematic removal of diesel from the highest-use segments first, not scattered adoption by early buyers.

Beijing is codifying the trend. Policy now targets 40 percent new-energy heavy-truck sales by 2030, with a fifth of the national heavy-truck fleet and 18 percent of highway freight volume electrified. The plan involves roughly 30,000 kilometers of zero-carbon highway corridors and about 3,000 charging and battery-swap stations. CATL, the country's dominant battery maker, expects half of all heavy-duty truck sales to be electric by 2028. Charging load already shows the shift: daily charging demand hit 383 million kWh in May 2025, and public charging grew an average of 62 percent year on year over the prior twelve months.

Gasoline is topping out too

Diesel is the sharper break, but the passenger side is the other half of the story. China's new-energy vehicle sales are on track to top 12 million units, and that fleet is eating into gasoline. By one estimate passenger EVs were already displacing around 582,000 barrels per day of gasoline in 2025. The signal in the raw numbers is stark: gasoline demand in May 2025 fell back to roughly where it sat in May 2022, three years of growth erased. Put diesel and gasoline together and electric vehicles are displacing more than 1 million barrels per day of implied oil demand, with another 600,000 barrels per day expected to come off over the following twelve months. That combined loss is on the order of Oman's entire daily output.

This is why the gasoline peak is no longer a distant 2030s milestone in the Chinese context. It is close, and diesel appears to have already turned.

Forecasters caught leaning the wrong way

The models are adjusting, some faster than others. The International Energy Agency's Oil 2025 outlook now expects Chinese oil demand to peak this decade, citing EVs, LNG trucks, high-speed rail and structural economic change as the drags on road fuel. That is a reversal of the growth assumption that anchored earlier editions. OPEC cut its 2026 global demand-growth forecast again in July, though the group stays more bullish on the long run than the IEA does. The gap between those two views is now largely a China-truck-electrification gap.

Forecasters who took the diesel floor for granted, or who assumed LNG would be the main substitute, are the ones exposed. BMI projects electric trucks will reach nearly 46 percent of new sales in 2025 and 60 percent in 2026 numbers that, if they hold, keep pulling the diesel curve down rather than flattening it. A conservative bottom-up screen still points to several hundred thousand barrels per day of diesel displacement by 2030 from trucks alone, before counting gasoline.

What to watch

Two things will tell whether this is a durable break or a subsidy-fed spike. First, the price spread. Battery trucks win on running cost as long as electricity stays cheap against diesel; a diesel crash or a power-price spike could stall the crossover. Second, the freight corridors. If the 30,000 kilometers of planned zero-carbon highway and the swap-station buildout actually materialize, long-haul diesel, the last stronghold, comes into range too. China imported about 11.55 million barrels per day of crude in 2025, with roughly 430,000 barrels per day going into storage rather than the tank. Strip out that stockpiling and the underlying consumption story looks softer than the import headline suggests.

The comfortable assumption was that China's trucks would burn diesel for a long time yet, and that EVs were a gasoline problem. Both halves of that assumption are breaking at once. Anyone still modeling Chinese diesel as a growth line is working from a map that no longer matches the road.