Transitioning from Diesel to Electric Vehicles in Great Britain

Battery electric cars are projected to surpass diesel vehicles on Great Britain's roads by 2030, with London anticipated to be the first UK city to eliminate diesel cars entirely. According to analysis by New AutoMotive, a think tank focused on the transition to electric vehicles, the number of diesel cars in Great Britain fell to 9.9 million in June 2025, a 21% decrease from its peak of 12.4 million. Despite the rapid growth in electric car sales, the transition for vans has lagged, with diesel vans reaching a record 4.4 million.

The Guardian

The rise of diesel vehicles in the UK can be traced back to the 2000s when government incentives made them more financially attractive due to lower tax rates. Diesel engines, while more fuel-efficient and producing less carbon dioxide, emit higher levels of harmful nitrous oxides. The "Dieselgate" scandal in 2015, where Volkswagen was found to have manipulated emissions tests, significantly impacted public perception and sales of diesel vehicles, leading to a sharp decline in diesel car sales to fewer than 100,000 in the first 11 months of 2025.

The Guardian

As of last year, battery electric cars constituted only 4% of the vehicles on UK roads, compared to 32% for diesels and 58% for petrol vehicles, according to the Society of Motor Manufacturers and Traders (SMMT). The transition away from diesel is expected to accelerate as older diesel vehicles are scrapped, which will also influence the availability of diesel at filling stations. The implementation of the ultra-low emission zone (Ulez) in London, which imposes charges on non-compliant vehicles, is a significant factor in this transition.

The Guardian

The decline of diesel vehicles is also evident in Scotland's central belt, which includes cities like Edinburgh and Glasgow, where low-emission zones are in effect. Ben Nelmes, CEO of New AutoMotive, emphasized the importance of ending diesel use to improve air quality in urban areas, stating, “Ending the use of diesel is essential to clean up Britain’s choking cities.” He noted that the shift to electric vehicles not only benefits public health but also reduces the UK's reliance on imported diesel.

The Guardian

Despite the positive outlook for electric vehicles, there are concerns regarding the distribution of diesel vehicles. The analysis indicated that urban residents are selling their diesel cars to rural areas, potentially prolonging their presence on the roads. Matt Finch, an environmental policy expert, remarked on the transition, stating, “No one is denying diesel hasn’t been useful, but it has had its day.” As the UK continues to roll out electric vehicles, the long-term effects on air quality and public health are expected to be significant.

The Guardian

• “Ending the use of diesel is essential to clean up Britain’s choking cities,” — Ben Nelmes, CEO of New AutoMotive

The Guardian

• “No one is denying diesel hasn’t been useful, but it has had its day.” — Matt Finch, Environmental Policy Expert

The Guardian