Norway's lead was bought, not invented

Norway registered 179,550 new passenger cars in 2025, and 95.9% of them were zero-emission. In December the figure reached 97.6%, up from 85.5% in the same month of 2024, and the average CO2 emissions of the new car fleet for the year came out at 4.1 grams per kilometre. Those figures come from Opplysningsrådet for Veitrafikken, the Norwegian road traffic information council, which has counted registrations there for decades.

The usual explanation for that number is some combination of national character, hydroelectricity and early adoption. The actual explanation is a price list.

The mechanism was relative price at the point of sale

Norway did not subsidise electric cars into competitiveness. It made them cheaper than the petrol equivalent on the forecourt, and it did that from both directions at once.

Electric cars were exempt from value added tax, which is 25%. Combustion cars carried a one-off registration tax, the engangsavgift, calculated on weight, carbon dioxide and until recently nitrogen oxides. The exemption reduced the price of one option; the registration tax inflated the price of the other. A Norwegian buyer standing in a showroom was not choosing a technology out of conviction. They were choosing the cheaper car.

The first serious narrowing of that gap came at the end of 2022. The Norwegian Tax Administration’s statement of 1 December 2022 confirmed that for electric passenger cars delivered to a customer after 31 December 2022, VAT would be calculated on the part of the purchase price exceeding 500,000 kroner. Cheap electric cars stayed exempt. Expensive ones started paying.

The withdrawal is now under way, and it is instructive

The 2026 rules narrow the gap much further. The road traffic council’s guide to the 2026 vehicle taxes records that the VAT threshold for electric cars falls from 500,000 to 300,000 kroner, with full VAT signalled from 1 January 2027.

The same document sets out what happens on the other side of the ledger. The weight component of the registration tax is restructured so that no charge falls on the first 1,200 kilograms, up from 500 kilograms. The carbon dioxide component is applied to every gram rather than only above 60 grams per kilometre. The nitrogen oxide component is removed. The net effect the council reports is that taxes on cars with combustion engines rise by 20,000 to 30,000 kroner per vehicle.

Read that as a whole and the strategy is unmistakable. The state is withdrawing the carrot and sharpening the stick, and it is doing so now precisely because the sales share has been won. A country that had reached 95.9% by persuasion would have no reason to keep adjusting the tax code every year.

December 2025 was not a surge in enthusiasm

One figure in the year’s data deserves a sceptical reading rather than a celebratory one.

Norway registered 35,188 new passenger cars in December 2025, and the zero-emission share that month was 97.6% against 85.5% in December 2024. Full-year registrations came in 50,859 higher than 2024. Those are the road traffic council’s figures, and the average CO2 emissions recorded for December were 2.5 grams per kilometre.

Set that against the change of rules on 1 January 2026, and a simple explanation presents itself. Anyone buying an electric car above 300,000 kroner had a strong reason to take delivery in December rather than January, because the VAT threshold moved on that date. Registration timing, not preference, is the obvious candidate.

This is an inference from the calendar rather than a finding, and no published analysis is cited for it here because none has been located. It is offered as the first hypothesis any analyst should test, because pull-forward around a tax deadline is one of the most reliably observed behaviours in vehicle markets anywhere. If it is right, early 2026 registrations should fall, and that is checkable in the same monthly series within months. A forecast that can be wrong quickly is worth more than one that cannot.

The number almost everyone quotes is the wrong one

Here is the figure that should govern any planning decision, and it is not the sales share.

Statistics Norway’s vehicle fleet statistics record 2,944,403 private cars registered at 31 December 2025, of which 945,185, or 32.1%, were electric. Electric cars grew 19.8% over the year and 178.0% over five years, while the fleet as a whole grew 1.9%.

Ninety-six per cent of what is being bought. Thirty-two per cent of what is being driven. The gap between those two numbers is fleet turnover, and it is the most under-appreciated constraint in transport decarbonisation. Cars last. A country can win the new car market outright and still have two thirds of its vehicles burning petrol a decade later, because the stock only changes at the rate the stock is replaced.

Anyone forecasting charging demand, grid reinforcement, fuel duty receipts or urban air quality from a sales share is out by roughly a factor of three, and will be for years. The sales figure is a leading indicator of a slow process, not a description of the present.

There is a second consequence that gets less attention. A fleet that is one third electric and two thirds not is a fleet that needs both kinds of infrastructure maintained simultaneously for another decade: filling stations that are losing volume every year, and charging that has to be built ahead of demand. Neither is commercially comfortable. The awkward middle of a transition is longer and more expensive than either end, and Norway is the only country far enough through it to have proper evidence about what that costs.

What this means for the United Kingdom

Britain has chosen a different instrument and is getting a different result.

The Society of Motor Manufacturers and Traders reported on 6 January 2026 that the UK registered 2,020,520 new cars in 2025, of which 473,348 were battery electric, a 23.4% market share against a zero emission vehicle mandate target of 28%. The gap widened from 2.4 percentage points the previous year to 4.6.

The sentence in that release that matters most is about who is paying. SMMT states that manufacturers subsidised battery electric sales by more than £5 billion in 2025, equivalent to around £11,000 per battery electric car registered, and calls such subsidies clearly unsustainable.

That is the structural difference, stated plainly. Norway put the cost of closing the price gap on the exchequer, as forgone tax, visibly, in a budget line that Parliament votes on every year. Britain has placed an obligation on manufacturers and left them to close the gap out of margin. Both approaches move the market. Only one of them has a mechanism for deciding how much it should cost and when it should stop.

The lesson that transfers

The reason Norway is worth studying is not that other countries should copy its incentives. Few could afford them, and Norway is now unwinding them itself.

It is that Norway ran a controlled experiment nobody else has run, at national scale, over more than a decade, on a single question: if you make the electric car the cheaper purchase, will people buy it? The answer is yes, comprehensively, and the answer took a decade of forgone revenue to obtain.

Every other question about electrification, from charging behaviour to residual values to the second-hand market, is downstream of that answer and better studied in Norway than anywhere else, because Norway got there first. The data side of that story is taken up in big data and the electric vehicle transition, and this desk’s other work on technologies whose adoption was decided by policy rather than capability sits under emerging technology.