Britain’s used electric car market reached a new milestone in the second quarter of 2026, with all-electric models taking a noticeably larger share of transactions than a year earlier.

Battery-electric cars accounted for more than one in 18 used-car deals between April and June, compared with about one in 30 during the same period last year.

That helped push the overall used-car market beyond two million transactions for the first time in five years. The figures suggest more buyers are becoming comfortable choosing an electric car on the second-hand market, where most British motorists actually purchase their vehicles.

<h3>Used EV Demand Is Growing</h3>

The rise in used electric car sales matters because the second-hand market reaches a much broader group of consumers than the new-car sector. New EVs can still carry a higher upfront price, but used models give buyers access to electric driving at a lower cost. As more EVs return to the market after company-car leases and first ownership periods, the number of available second-hand models is increasing.

That creates greater choice and, in theory, makes electric cars accessible to more households. <b>Growth in used EV sales is one of the clearest signs that electric mobility is moving beyond early adopters and into the mainstream used-car market.</b>

<h3>Petrol and Diesel Still Lead</h3>

Despite the strong EV growth, conventional cars remain dominant. Almost nine in 10 used-car transactions in the second quarter involved either petrol or diesel vehicles. That partly reflects the existing vehicle fleet. There are simply far more petrol and diesel cars already on British roads, so they naturally make up a much larger share of the second-hand market. But the figures also show that demand for combustion-engine cars remains substantial. This is one of the biggest challenges facing the transition to electric mobility.

Even if new EV registrations increase quickly, changing the composition of the entire national vehicle fleet takes years. Millions of petrol and diesel cars will continue circulating through the used market long after the share of electric cars in new registrations rises.

<h3>New Cars Feed the Used Market</h3>

The health of the used EV market depends heavily on what happens in new-car sales. Every second-hand EV begins as a new vehicle. A strong new-car market therefore creates the future supply of used electric cars, helping expand choice and bring prices within reach of more buyers.

This is why the relationship between new and used markets is so important. If new EV volumes are too weak, the second-hand market may eventually face limited supply. On the other hand, if manufacturers are pushed to sell far more new EVs than consumers currently want, excessive discounting could create another problem.

<h3>Residual Values Become Critical</h3>

Heavy discounts on new electric vehicles can affect the value of cars already on the road.

If a new model suddenly becomes much cheaper, buyers may be unwilling to pay as much for a similar used vehicle. That can push residual values down sharply. Lower used prices might initially sound positive for buyers, but rapid depreciation can create uncertainty across the market. It affects leasing companies, finance providers, dealerships and motorists who expect to sell or trade in their vehicles later.

Weak residual values can also make monthly finance costs more expensive because lenders need to account for the lower expected value of the vehicle at the end of an agreement.

<b>A healthy EV market therefore needs affordability without creating such aggressive discounting that confidence in second-hand values is damaged.</b>

<h3>The ZEV Mandate Debate</h3>

This tension sits at the centre of the debate around Britain’s Zero Emission Vehicle mandate. The regulation is designed to increase the proportion of zero-emission cars sold by manufacturers over time. The target stands at 33% for 2026, rising to 38% next year and 52% the following year.

However, industry surveys have suggested that underlying consumer demand for a new EV may currently be closer to 10%–13%. That difference creates pressure on manufacturers. If required EV market share rises faster than customer demand, companies may have to offer substantial incentives or discounts to achieve the mandated targets.

The automotive industry has therefore welcomed the government’s decision to review how the mandate operates. The argument is not necessarily about abandoning the transition to electric vehicles, but about finding a pace that supports both consumer demand and long-term industry investment.

<h3>Market Share Is Not Everything</h3>

One important distinction is the difference between market share and actual sales volume.

A manufacturer can increase the percentage of EVs in its sales mix even if the overall number of cars sold remains weak. But carmakers need sufficient volume and profit margins to fund future models, factories, battery development and other investment. The wider electric vehicle ecosystem also depends on volume.

Charging networks, servicing businesses and other infrastructure become more economically viable as the number of EVs on the road increases. That means a sustainable transition requires more than simply achieving a percentage target.

<h3>Affordability Will Decide the Pace</h3>

For used EV demand to continue growing, motorists need confidence in more than the purchase price. Charging availability, insurance, battery durability, running costs and resale value all influence the decision. The best outcome would be a steady increase in new EV sales that creates a healthy stream of affordable used vehicles without destabilising prices.

That is especially important because the used market is where electric cars have the greatest chance of reaching a much wider audience.

<h3>A Market in Transition</h3>

The record rise in second-hand EV transactions is encouraging.

Electric cars are taking a larger share of the market, and more buyers are clearly willing to consider them.

But the overwhelming dominance of petrol and diesel shows how gradual the transition will be.

<b>Britain’s used EV market is moving in the right direction, but sustainable growth will depend on keeping new-car supply, consumer demand and residual values in balance. The challenge is no longer simply getting more electric cars onto the road — it is building a market that motorists, manufacturers and investors can trust for the long term.</b>