UK adopts Euro 7 emissions standard, including EV battery lifespan and state-of-health rules

The UK Department for Transport has confirmed that Great Britain will adopt the Euro 7 emissions standard. To reduce administrative work for automakers (now there’s a promising idea!), there will be no separate GB-specific approval process. EU- and UNECE-type approvals will apply, allowing vehicle models to be sold in both the UK and the EU without additional testing.

The Euro 7 regulations go beyond exhaust emissions—they also address environmental impacts relevant to EVs, including limits on brake and tire wear particles and requirements for battery lifespan.

The bugaboo about EVs producing more particulate matter pollution than gas-burners, a favorite of the anti-EV crowd, was debunked back in 2022. (EVs’ mechanical brakes wear more slowly, thanks to regenerative braking, and tire wear is similar to that of legacy vehicles). However, particulate matter pollution is a concern for all vehicles, and the Euro 7 rules address this with fixed limits on PM emissions from brakes. Tire wear limits will also be introduced gradually to reduce microplastic pollution.

Most relevant for the EV market, Euro 7 establishes minimum legal standards for EV battery capacity retention. Batteries in battery-electric and plug-in hybrid passenger cars must retain at least 80% of their original capacity after five years or 100,000 km; they must retain 72% after eight years or 160,000 km.

In order to enforce the capacity retention rules, Euro 7 requires manufacturers to install standardized battery state-of-health (SOH) monitors. These onboard monitors allow EV buyers to compare battery conditions of individual vehicles from different manufacturers, increasing transparency in the used-car market.

The UK will adopt Euro 7 rules based on existing EU and UNECE standards. Manufacturers will not need to conduct additional testing specifically for the UK market. (If such logic had prevailed back in 2016, the UK might have spared itself and its neighbors aa world of trouble.)

The Euro 7 rules will apply to new passenger cars and light commercial vehicles in the UK beginning in November 2027. The rules will be phased in for trucks and buses, and for automakers producing fewer than 2,500 vehicles annually. All vehicles must comply by July 1, 2030. Existing vehicles are not affected by the changes, and rules for environmental zones such as London’s ULEZ will remain unchanged for now.

Source: UK Department for Transport