The Price Gap Has Flipped: Used EVs Now Cost Less Than the Petrol Equivalent

For most of the last decade, the electric version of a car cost more than the petrol one, new or used, and buyers who wanted one paid a green premium. That logic has now broken down on the used market. Analysis of more than 14 million vehicle adverts by Indicata, the used-vehicle pricing firm, found that used electric cars are now an average of £1,800 cheaper than their petrol and diesel equivalents, a crossover point few in the trade expected this soon.

How the gap flipped

Two forces moved in opposite directions at once.

The first is the correction that everyone watched happen. Used EV values fell for 40 consecutive months as early supply outpaced demand, lease returns flooded the market and buyers hung back. That slide ended this summer: prices stopped falling in May, then rose 3.3% year on year in July, the strongest annual growth on record for the segment, according to Auto Trader data. We covered that turn and the record second quarter behind it in our used EV market piece.

The second force arrived at the petrol pump. The fuel-price shock earlier this year, triggered by the conflict in the Middle East, pushed petrol and diesel values up both new and used. Petrol cars got more expensive at exactly the moment electric cars got cheaper, and the gap did not just narrow, it reversed.

Indicata's own read of their data is that the BEV recovery is demand-led rather than discount-led, which is the more important half of the story. A market propped up by cheap stock finds its floor; a market carried by buyers pays real money.

What £1,800 cheaper actually buys you

The average gap understates what is happening at the sharp end, because the crossover varies enormously by segment. Premium saloons, which depreciated hardest in their electric form, show the widest gaps. Small city cars, always the cheapest electrics, show the narrowest. In practical terms, a buyer shopping at £15,000 to £20,000 for a family-sized hatchback or SUV can often now choose between a three-year-old petrol car and a three-year-old electric one with the newer registration, lower mileage and the bigger subsidy of history behind its price.

The running-cost side compounds the purchase-price advantage. Charging at home overnight, the electric car's per-mile energy cost runs at roughly a quarter of the petrol car's, and we have walked through that arithmetic in our fuel duty comparison. Servicing runs cheaper too, as our maintenance analysis set out. A used EV bought at parity or better, running at a fraction of the cost, is no longer a moral purchase. It is an arithmetic one.

The wider ledger

That £1,800 gap also needs reading as a total-cost story rather than a windscreen-price one, because the purchase advantage compounds after the handover. Charging at home overnight runs at roughly a quarter of the per-mile cost of petrol, a saving worth around £1,000 a year at typical mileage, as our fuel duty comparison sets out. Servicing runs cheaper too, by roughly 30% over five years. Set those annual savings against a lower purchase price and the electric option stops being the frugal choice made on principle and becomes the straightforward one made on spreadsheet, which is a different kind of buyer entirely, and a far larger one.

What it means for the new market

The used crossover feeds straight back into new-car economics, through a route most buyers never see: the residual value. Lease and PCP monthly payments are set by what the car is expected to be worth at the end of the term, and for years the weak used EV market poisoned that calculation, making new electric cars look artificially expensive on a monthly basis even when their sticker price was close to petrol. With used electric values now rising, the fastest annual growth on record, and stock turning in around three weeks in the hottest segments, that residual penalty is unwinding. Every point of recovered used value makes the next new electric lease cheaper, without a single pound of new discounting.

It also settles the confidence question that held back used buyers for three years. The fear that an electric car would be worthless in three years is now contradicted by the market's own pricing, and the battery health data behind that pricing is documented rather than anecdotal. Indicata's judgment that the recovery is demand-led matters precisely here: a floor set by buyers, not by distressed sellers, is a floor that holds.

The caveats worth keeping

The crossover is an average across a market, not a law of physics, and three checks still separate the good buys from the expensive ones.

Battery condition comes first, and the evidence there is reassuring: large-scale UK data shows average battery health above 95%, with 8 to 12-year-old cars still holding 85% of original capacity. Second, the range on offer at the cheap end is older-generation range, which is fine for most weeks and wrong for some households, so buy the range your driving needs rather than the price the market tempts you with; our used EV checklist covers the full drill. Third, public charging costs vary far more than petrol prices do, so a buyer without home charging should price their realistic charging pattern before counting the savings.

The honest read

Prices tell the truth about a market, and the used market has now said two things in the same breath: electric cars have stopped being a falling-knife purchase, and the petrol premium has quietly inverted. For buyers in the market this autumn, the practical consequence is simple. The question is no longer whether you can afford the electric option, but whether you can justify the petrol one.