Ministers are facing calls to require used car dealers to provide independent battery health assessments when selling electric vehicles, a move that three leading industry bodies say would boost consumer confidence and help overcome a major barrier to EV adoption.

The plea comes from Electrifying.com, New AutoMotive and BatteryIQ, which argue that modern EV batteries last far longer than many buyers believe. They described anxiety over battery condition as one of the biggest remaining obstacles to mainstream EV adoption, and said the real problem is not battery health itself but the lack of clear, independent information available when a vehicle is sold.

A £30 Fix Could Feature in MOT

One possible solution, supported by an industry source, is the introduction of battery health certificates, which are available from around £30. There is hope these could be incorporated into the MOT process, which is less demanding for EVs than for conventionally fuelled cars.

Ginny Buckley, founder of Electrifying.com, said the current lack of mandatory battery assessments means buyers are being asked to make “one of the biggest purchases of their lives without one of the most important pieces of information”. She added that experts telling buyers they have nothing to worry about is not enough – “we need to address them [the concerns]”.

Why Now? Used EV Sales Rising

The background to the appeal is a sharp increase in used electric car sales. Figures from the Society of Motor Manufacturers and Traders show sales rose by 67% to 110,761 units in the three months to the end of June compared with the same period last year. The British Vehicle Rental and Leasing Association reported that salary sacrifice agreements for used EVs were nearly six times higher in the past year than during the previous 12 months.

The growth is partly attributed to fuel price hikes linked to the Middle East conflict. Yet, despite the rising demand, a persistent lack of buyer trust remains. Four out of five car sales in the UK involve used vehicles, making the issue particularly significant.

A Tesla spokesperson said “demand for confidence in battery health” was a key reason its Model 3 and Model Y were the fastest-selling cars on UK forecourts in July.

Industry Voices Support Reform

Ben Nelmes, chief executive of New AutoMotive, said government policy has done “a good job” creating a strong supply of second-hand EVs, but “the challenge now is stimulating demand”. He described battery health certificates as “a practical, proportionate reform that would strengthen consumer confidence without requiring expensive subsidy schemes”.

Nick Bailey, founder of BatteryIQ, said battery health is “probably the single biggest unanswered question for used EV buyers, yet it’s also one of the easiest things to measure accurately”.

Government Response

The Department for Transport confirmed it is “working to introduce new rules to provide clearer and more consistent battery health information”. A spokesperson also pointed out that EV batteries already come with long-term protection, including an eight-year or 100,000-mile warranty required by the zero emission vehicle (ZEV) mandate.