A new industry-first battery warranty for used electric vehicles has debuted in the UK to provide financially backed protection based entirely on independent battery health data.

If the state of health falls below its guaranteed threshold within a year, buyers get compensation and a refund on test costs

Already successfully rolled out in France and Sweden, the new warranty from Aviloo comes into effect in the UK from July, launching simultaneously in Germany, the Netherlands, Finland, Austria, Belgium, Ireland and Switzerland.

Aimed at the fleet, dealer and leasing sectors, the warranty is designed to reassure used car buyers on battery health and is built on the Aviloo Flash Test – a three-minute, manufacturer-neutral battery health check covering 96% of EV models.

Buyers receive a one-year warranty period during which they can carry out the test. If the battery’s state of health falls below the calculated threshold during the warranty period, the buyer receives compensation – set at £2,700 in the UK – plus a full refund of the Flash Test costs. Aviloo says this is a “concrete, unconditional financial backstop, not a vague assurance”.

The battery warranty is issued as a standalone document, separate from Aviloo’s existing independent battery certificate. It is managed through Aviloo Connect, a new digital dashboard for professional EV remarketing, giving dealers, fleets and remarketing platforms a single interface to manage battery test lifecycles from incoming inspection through to warranty issuance.

For each vehicle, the individual state of health floor is calculated using Aviloo’s proprietary diagnostics database – billed as the largest battery health dataset in the world. The calculation sets the minimum state of health that the battery must maintain at 20,000km over the one-year warranty period. Dealers can offer this warranty to buyers as a credible, independently underwritten selling point, without carrying the risk themselves.

Marcus Berger, CEO of Aviloo, said the new battery warranty raises the used electric vehicle market to a new level.

“For the first time in the UK, we are providing the foundation for a warranty based solely on objective, independent measurement data. This builds trust and gives British dealers and buyers a level of certainty that simply has not existed before. The UK has one of Europe’s most dynamic used EV markets, and we see enormous appetite from both dealers and consumers to get this right. With the Battery Warranty, we are setting a new industry standard – one that provides orientation for all market participants, strengthens the case for electric mobility, and ensures that used EVs are seen not as a risk, but as a sustainable, trustworthy choice.”

Aviloo’s independent battery diagnostics are already trusted by some of Europe’s biggest automotive and leasing company names. Mercedes-Benz, Volvo and Porsche Holding have each selected the company as their preferred third-party battery testing provider for dealerships across Europe, with the Flash Test deployed on both own-brand and trade-in vehicles.

Alongside this, leasing giants Ayvens and Arval use Aviloo as part of their end-of-lease remarketing process.

And auction groups BCA and Cox Automotive have integrated the Flash Test into their European operations, while major dealer groups Hedin and Emil Frey are also live with the system. All relationships are underpinned by European-level agreements.