Brexit Tariffs and Electric Cars: Why Your Next EV Could Cost Thousands More

Imagine finally deciding to make the switch to electric. You've done the research, crunched the numbers, and concluded that — between fuel savings, lower servicing costs, and the new EV grant — an electric car finally makes financial sense. Then, almost overnight, the price jumps by several thousand pounds. Not because of inflation, not because of supply chain disruption, but because of a trade deal clause that most drivers have never heard of.

That's the very real scenario facing UK car buyers, and it's closer to becoming reality than many people realise.

What's Actually Happening

According to a report by AutoExpress, electric vehicles imported into the UK could soon face significant tariffs — potentially in the region of 10% — unless the rules of origin provisions within the UK-EU Trade and Cooperation Agreement (TCA) are urgently revised.

The TCA, which came into force on 1 January 2021 following the Brexit transition period, contains specific requirements about where a vehicle's components must originate in order for that vehicle to qualify for tariff-free trade between the UK and the European Union. Under these rules of origin clauses, a set percentage of an electric vehicle's value must derive from components manufactured in either the UK or the EU.

The sticking point is the battery. EV batteries are, by far, the most expensive component in any electric car — typically accounting for between 30% and 50% of the vehicle's total manufacturing cost. And the overwhelming majority of battery cells are currently produced in Asia, predominantly China and South Korea, rather than in Europe.

As the rules stand, manufacturers importing EVs into the UK from EU countries — or vice versa — must demonstrate that a sufficient proportion of the vehicle's value (rising to 45% from 2024 onwards, and 60% from 2027) originates from within the UK or EU. If they can't prove that, a 10% tariff applies.

For a £35,000 electric car, that's an additional £3,500 added to the sticker price. For a premium model at £60,000, you're looking at £6,000 on top.

Why This Matters: The Bigger Picture

This isn't a new problem — the rules of origin issue has been rumbling away since the TCA was first agreed — but the stakes are growing sharply as the EV market expands and as manufacturers race to meet the UK Government's Zero Emission Vehicle (ZEV) mandate.

The ZEV mandate, introduced under the Zero Emission Vehicles Act 2024, requires that a rising percentage of new cars sold by each manufacturer must be zero-emission. In 2024, the target was 22%; by 2030, it reaches 80%; and by 2035, it becomes 100%. Manufacturers who miss their targets face fines of £15,000 per non-compliant vehicle sold — a punishing penalty that makes compliance non-negotiable.

Here's the bind: manufacturers are being legally required to sell more EVs, whilst simultaneously facing the prospect of those EVs becoming significantly more expensive due to tariffs. The two policy pressures are pulling in opposite directions, and it's ordinary UK drivers who risk getting caught in the middle.

Several major manufacturers — including Stellantis (which owns Vauxhall, Peugeot, and Citroën) and Volkswagen Group — have already lobbied both the UK and EU governments to extend or renegotiate the rules of origin provisions. A temporary extension was agreed for 2024, delaying the full impact, but that reprieve is finite. Without a more permanent solution, the tariff cliff edge remains.

The Legal Angle: Trade Law, Domestic Legislation, and Your Rights as a Consumer

The legal framework here operates on several levels simultaneously, and it's worth unpacking each one.

The UK-EU Trade and Cooperation Agreement is an international treaty, not domestic UK legislation. It cannot be unilaterally amended by the UK Parliament; any change requires negotiation with — and agreement from — the European Union. That makes this a diplomatic and political challenge as much as a legal one.

The Customs and Excise Management Act 1979 and the Taxation (Cross-border Trade) Act 2018 govern how import duties are applied in the UK. Under these frameworks, HMRC administers tariff collection, and any goods failing to meet rules of origin requirements are subject to the applicable Most Favoured Nation (MFN) tariff rate — which, for passenger cars, sits at 6.5%.

Wait — 6.5%, not 10%? The figure varies depending on which direction the vehicle is travelling and which specific tariff code applies. For EVs specifically, the relevant Combined Nomenclature code is 8703 80, and the applicable tariff under the UK Global Tariff schedule is indeed 6.5% for most passenger EVs. The EU applies its own equivalent rate. Either way, the financial impact on retail prices is substantial.

Consumer rights are a separate matter. Under the Consumer Rights Act 2015, goods must be of satisfactory quality, fit for purpose, and as described. If a manufacturer increases prices significantly after you've placed an order but before delivery — a scenario that could arise if tariffs kick in mid-production cycle — you may have grounds to withdraw from the contract without penalty. Always check your purchase agreement carefully for price variation clauses.

What Drivers Should Know: Practical Advice

If you're considering buying an electric car in the next 12 to 24 months, the tariff situation is something you genuinely need to factor into your planning. Here's what to keep in mind:

• Check where your chosen EV is manufactured. Vehicles built in the UK — such as the Nissan Leaf (Sunderland) or the MINI Electric (Oxford) — are far less exposed to import tariffs than models assembled in continental Europe or Asia. A quick search of the manufacturer's website or the vehicle's VIN prefix will usually confirm the production country.
• Look at vehicles with UK- or EU-sourced battery supply chains. Jaguar Land Rover, for instance, is investing heavily in UK battery production through its Coventry gigafactory partnership. Vehicles underpinned by domestically sourced battery cells are more likely to meet rules of origin thresholds.
• Consider the timing of your purchase. If tariff negotiations are ongoing, there may be a window before any new rules come into force during which current pricing remains stable. Conversely, if a deal collapses, prices could rise sharply and quickly.
• Check eligibility for the UK EV grant. The current grant offers up to £3,750 off qualifying new electric cars priced under £35,000. If tariffs push prices above that threshold for previously eligible models, the grant disappears along with the price advantage. Check current qualifying models via the Office for Zero Emission Vehicles (OZEV) website before committing.
• Scrutinise your finance agreement. Many EVs are purchased through PCP or HP finance. If the vehicle's residual value projections are based on pre-tariff pricing assumptions, and tariffs cause prices to shift significantly, your end-of-contract balloon payment or equity position could be affected.

Looking Ahead: What Happens Next?

The honest answer is that nobody knows for certain — and that uncertainty is itself a problem for an industry trying to plan production lines, set pricing strategies, and meet government mandates simultaneously.

There are three broad scenarios on the table. First, the UK and EU agree a permanent extension or revision of the rules of origin provisions, giving manufacturers more time to build out European battery supply chains. This is the most industry-friendly outcome, and both sides have an economic incentive to reach it. Second, the rules kick in as written, tariffs are applied, and EV prices rise — with manufacturers, consumers, and the government all absorbing different portions of the pain. Third, a hybrid arrangement emerges: partial relief for certain vehicle categories, phased implementation, or bilateral carve-outs for specific manufacturers with credible localisation plans.

The UK Government's stated ambition is to make EVs accessible and affordable for ordinary drivers. The ZEV mandate, the EV grant, and the investment in public charging infrastructure all point in that direction. But those efforts are undermined if the underlying trade framework makes the vehicles themselves significantly more expensive.

What seems increasingly clear is that the rules of origin provisions, as originally drafted, were written for a world in which European battery manufacturing was further along than it actually is. The technology moved faster than the trade negotiators anticipated, and the supply chain reality — dominated by Asian cell producers — didn't match the policy aspiration.

Renegotiating that reality will require political will on both sides of the Channel. For UK drivers eyeing an EV, the next 12 months of diplomatic activity may matter just as much as the next generation of battery technology.

Source: AutoExpress — "Electric car prices set to rise if Brexit deal isn't amended"