Regulatory targets usually get discussed as a manufacturer problem. The obligation sits with the carmaker, the penalties land on the carmaker, retailers are bystanders.
That framing stopped working, because the gap between target and market has to be closed by somebody selling cars to people.
The Size of the Shortfall
The ZEV Mandate requires 33 per cent of each manufacturer’s 2026 new car registrations to be zero-emission. Through April, market-wide battery electric share was 23.1 per cent year-to-date.
Roughly ten percentage points short, with two-thirds of the year gone.
The forecast has already moved. The SMMT revised its full-year 2026 BEV forecast from 28.5% to 26.8% after a below-target first quarter, which would finish the year around 6.2 percentage points under the mandate.
None of this reflects a weak market. April registrations hit 149,247, up 24 per cent year-on-year and the strongest April since 2019, though that comparison flatters itself against a weak April 2025 when buyers pulled purchases forward ahead of tax changes.
Electrified vehicles as a whole took 53.2 per cent of April registrations, the second month this year they’ve outnumbered internal combustion. The problem isn’t electrification. Plug-in hybrids are absorbing much of the movement, growing 46.4 per cent to a 13.8 per cent share, while pure battery electric doesn’t close the mandate gap.
The Gap Is a Retail Gap
The channel split explains why it persists.
Fleet registrations led April’s recovery, up 26.8 per cent to 90,462 units and 60.6 per cent of the market. Private buyers grew 20.2 per cent to 56,116 but made up only 37.6 per cent.
Fleet buyers have a structural incentive to go electric through benefit-in-kind treatment. Private buyers have no equivalent lever, and their decisions turn on choice, price and the Electric Car Grant.
So the organisations with the strongest financial reason to switch have largely switched. What’s left is a large population of private buyers being asked to choose electric on the merits.
No pure battery electric model appears in either the 2026 or 2025 year-to-date top ten. That 23.1 per cent is spread thinly across a wide range of models at individually modest volumes, and the fragmentation is the operational problem. Fifty electric models selling modestly is a completely different marketing challenge from three selling heavily.
Fragmented Demand Favours Inventory-Led Advertising
When demand concentrates on a handful of models, brand advertising works fine. Everybody’s looking for the same few things and the job is staying top of mind.
Fragment that demand across dozens of models at low individual volumes and the approach falls apart. Somebody searching for a specific electric hatchback in a specific price band isn’t reachable through general awareness. They’re reachable at the moment they specify what they want, and Google Vehicle Listing Ads sit exactly there, matching real stock against the search.
Electric buyers also frequently arrive with no fixed model in mind. Someone moving over from petrol has no brand loyalty inside the electric segment and often no strong view on which manufacturers are good at it, so the search starts with requirements: range, charging, boot, budget.
Advertising that shows actual available units against those requirements meets that search where it is. Advertising that promotes a dealership or a manufacturer arrives too early for somebody already at the comparison stage.
The stock reality reinforces it. Retailers holding electric inventory they’re contractually encouraged to move need those specific units in front of the specific people searching, not general traffic to be filtered afterwards.
What Happens Next
Cox Automotive’s baseline forecast projects 2,082,665 full-year registrations, up 3.1 per cent on 2025 and broadly in line with the SMMT’s 2.093 million.
The volume is expected to be there. The mix is the question.
Petrol and diesel combined took less than half of registrations year-to-date through April, at 49.3 per cent, down from 54.9 per cent a year earlier. Right direction, short of the pace the mandate assumes.
Closing six percentage points in eight months would need a change in private buyer behaviour that nothing in the current data forecasts. More likely, manufacturers use the flexibilities in the mandate and retail incentives on electric stock intensify through the second half.
Plan for the second scenario. Heavier incentives on electric inventory mean more competitive pricing on similar stock across more dealerships, which makes being visible at the point of search matter far more than it does when stock is scarce.
