The UK Zero-Emission Vehicle (ZEV) mandate is now in its third year, and 2026 is the year the targets start to bite in earnest. The headline target for new-car sales this year is 28% battery-electric share of registrations. After four months, the market run-rate sits at 24.1%. The gap is bridgeable, but only with two more strong quarters and active use of the flexibility mechanisms.
Where the Numbers Stand
SMMT's April 2026 release puts year-to-date BEV share at 24.1% of new-car registrations, on a base of roughly 644,000 cars registered January to April. That is up from 19.6% over the same period in 2025, a real and significant year-on-year jump. April alone hit 24.4% BEV share, slightly above the YTD blend.
The cumulative BEV parc on UK roads passed 2 million units in April, a number worth pausing on. Five years ago, the figure was under 200,000. The infrastructure ecosystem (public chargers, used-car liquidity, fleet decommissioning flows) is now operating at a scale that meaningfully different from the 2021 baseline.
Brand-by-Brand Compliance
The ZEV mandate is enforced per-manufacturer, not market-wide. Each OEM has a 28% target for 2026, with three flexibility mechanisms: borrowing from future years, transferring credits between affiliated brands, and buying credits from over-compliant OEMs. The latest available compliance picture, drawn from manufacturer disclosures and SMMT registration mix data:
- Tesla and BYD: 100% BEV share, both selling credits into the trading market
- Volvo: roughly 38% BEV share YTD, comfortably above target
- BMW Group: around 30% BEV (including Mini), on track
- Mercedes-Benz: around 26%, slightly below target, likely to use credit transfer within the group
- Volkswagen Group: around 25% blended across VW, Skoda, SEAT, Audi, Porsche. Audi over-compliant pulls the group closer to target
- Stellantis: around 21%, below target. Vauxhall and Peugeot BEV mix is improving but Fiat and Jeep are dragging
- Toyota: roughly 4% BEV in the UK. Toyota is the most credit-exposed major OEM and has been a confirmed buyer of credits from Tesla
- Ford: around 9% BEV. Also a credit buyer, primarily from Volvo and Tesla
The Credit Trading Market
The ZEV credit market was created precisely to handle this kind of brand-level variance. A credit is worth roughly 4,000 to 6,000 pounds in current trades, based on Department for Transport data and industry reporting. That is materially below the official non-compliance fine of 12,000 pounds per vehicle (reduced from 15,000 in 2025), which means the credit market is functioning as intended: making compliance cheaper than penalty, and rewarding the BEV-heavy OEMs with a recurring revenue stream.
Tesla's credit revenue in the UK alone is now meaningful at the group level. BYD, as the second-largest pure-BEV brand in the UK by volume, is also a credit seller.
What Could Move the Run-Rate
Two factors will determine whether the market closes the 24.1% to 28% gap by year-end:
- The September plate-change month. September is by far the biggest single sales month in the UK. Brands push their BEV mix hard in September because every additional BEV in that month moves the annual blend more than any other month. Expect aggressive September pricing on BEV inventory.
- Fleet ordering patterns. Fleet and salary-sacrifice channels are running at over 40% BEV share already. Continued fleet electrification adds 1 to 2 percentage points to the annual blend if the trend continues.
What This Means for Buyers
The ZEV mandate is now visibly reshaping showroom incentives. Brands that need to lift their BEV mix are discounting electric models more aggressively. Brands like Stellantis (Vauxhall Mokka Electric, Peugeot e-208), Ford (Mustang Mach-E, Capri), and the Renault group (Megane E-Tech, R5) are running stronger month-end deals than their petrol equivalents. If you are shopping for an EV in 2026, the discount environment is the best it has been since the plug-in car grant ended.
Open the UK dashboard on AutoNergy to see the ZEV trajectory month by month, plus brand-level BEV share over time.