The 2030 petrol and diesel ban: what it means for used car values

Few motoring topics cause as much confusion as the "2030 ban". Some drivers fear their petrol hatchback will become illegal or worthless overnight. Neither is true. This guide explains what the UK government has actually confirmed as of October 2026, what the zero emission vehicle (ZEV) mandate requires of carmakers, and how all of this might feed through to the second-hand prices of petrol, diesel, hybrid and electric cars.

If you just want to know what your car is worth today, you can get a free valuation on moValue in about 30 seconds.

What the UK has confirmed so far

New petrol and diesel cars: 2030

In April 2025 the government confirmed that sales of new purely petrol and diesel cars will end in 2030. That position still stands. When the Department for Transport opened a review of the ZEV mandate in August 2026, it said plainly that the end dates are not changing. The Transport Secretary, Heidi Alexander, summed it up as "the end goal hasn't changed".

Hybrids: allowed until 2035

The same April 2025 announcement confirmed that new hybrid cars, such as full hybrids like the Toyota Prius, can carry on being sold until 2035. Plug-in hybrids are also part of the 2030–2035 transition. From 2035, every new car and van sold must be fully zero emission at the tailpipe. Small and micro-volume manufacturers, such as specialist supercar makers, were given an exemption from the 2030 phase-out.

The 2026 review includes a section on how the 2030 phase-out should be defined in law, so the fine print on exactly which hybrid types qualify could still be adjusted. The government's own consultation also notes that the 2035 end date is not yet written into legislation. Neither point changes the headline dates.

The ZEV mandate as of October 2026

The ZEV mandate is the rulebook that pushes carmakers towards electric. Rather than banning anything outright, it requires each manufacturer to make a rising share of its new car sales zero emission each year. Under the current trajectory, that share rises to 38% in 2027 and 80% in 2030, then reaches 100% in 2035. Manufacturers can use several flexibilities, including borrowing against future years, banking surplus credits, trading with other brands, and offsetting through CO2 savings on their petrol and diesel models.

In August 2026 the government launched a review of these yearly targets, citing supply chain pressures, tariff uncertainty and slower-than-hoped demand. One option in the consultation would lower the 2030 car target from 80% to 70%, with smaller steps in the years before, while keeping 100% in 2035. The consultation closes on 23 October 2026, and no decision had been published at the time of writing. Expect the interim targets to be the part that moves, not the 2030 and 2035 deadlines.

For context, SMMT figures show battery electric cars took 28.3% of the new car market in September 2026 and 26.2% across the year to date, with plug-in hybrids at 17.0% in September.

Can you still buy, sell and drive a petrol or diesel car after 2030?

Yes. This is the single most important point for used car owners:

• The ban applies to new cars only. The government has stated that used petrol and diesel cars can still be sold on the second-hand market.
• Existing cars can keep being driven. The phase-out dates do not apply to petrol, diesel and hybrid cars already on the road.
• Nothing changes on 1 January 2030 for your car. It will still need an MOT, tax and insurance as normal, and you can still sell it privately, part-exchange it or sell it to a dealer.

What the national policy does not cover is local road charging. Clean air zones and low emission zones are set by cities, not by the 2030 rules, so check the schemes that apply where you live and drive.

How the policy could affect used car values

Nobody can say for certain how values will move between now and 2035. What we can do is look at today's market and the forces the policy creates. moValue's own study of used-car asking prices from large UK online car dealers (October 2026) gives a useful starting point (moValue UK Used Car Prices Report, Oct 2026).

Petrol cars

Petrol remains the reference point in the used market. With new petrol-only models gradually becoming harder to find as 2030 approaches, demand for good used examples may hold up well among buyers who are not ready to switch. That said, an ageing petrol car still loses value year after year. In our study, each extra year of age typically costs a used car about 5–6% of its value, whatever the fuel type.

Diesel cars

Diesels were already priced about 5% below equivalent petrol cars in our October 2026 study. That gap reflects tighter emissions scrutiny, clean air zone charges in some cities and fewer private buyers. If you run a diesel and do mainly short urban trips, the case for keeping it is weaker than for a high-mileage motorway driver who still benefits from its economy.

Hybrids and plug-in hybrids

Because hybrids can be sold new until 2035, they sit in the middle of the transition. In our study, plug-in hybrids were priced about 5% above equivalent petrol cars when nearly new, but around 3% below by the time they reached four years old. That pattern suggests buyers pay a premium for the latest plug-in technology but are less willing to pay extra for older versions with smaller batteries or shorter electric range.

Electric cars

EVs show the steepest swing. Nearly new electric cars were priced around 6% above equivalent petrol models in our study, yet at four years old they were about 8% below. Fast-moving battery technology, longer ranges on newer models and heavy discounting on new EVs all put pressure on older electric cars. As the ZEV mandate pushes more new EVs into the market, that supply could keep weighing on used EV prices, though rising buyer confidence works in the opposite direction.

What this means in practice

Put together, the data points to a few simple rules of thumb:

1. Age matters more than the policy. At roughly 5–6% per year, the steady cost of getting older is likely to outweigh any short-term "2030 effect" on most cars.
2. Diesels already carry a discount. Waiting for the gap to close is unlikely to pay off.
3. EVs and plug-in hybrids depreciate faster in the early years. Their premium when nearly new fades quickly.
4. Policy news can move sentiment. Watch the outcome of the 2026 review.

Deciding when to sell

If you are weighing up whether to sell now or hold on, consider the following.

Sell sooner if…

• You drive a diesel that mainly does short trips. You are paying the diesel discount without getting the fuel-economy benefit.
• Your EV or plug-in hybrid is approaching three to four years old. Our study shows the premium on these cars turns into a discount over that period.
• A major cost is coming up. Tyres, a cambelt or a battery-related repair can be a good trigger to sell before you spend.
• Your car is close to a mileage or age milestone. Buyers often filter searches at round numbers.

Hold on if…

• Your car is reliable, paid for and suits your needs. Keeping a good car is often cheaper than changing, and the 2030 rules will not stop you using it.
• You drive a petrol or hybrid model that is in steady demand. There is no cliff edge in 2030 for used cars.
• You are waiting for the ZEV review outcome. If you plan to buy new, the result may affect prices and discounts on new models.

Timing within the year

Spring and early summer tend to bring more buyers into the market, while the run-up to Christmas is usually quieter. New registration plates in March and September also bring a wave of part-exchanges onto dealer forecourts. Whatever you decide, check your car's value regularly so you can act when the numbers look right.

Get a clear picture of your car's value

The 2030 phase-out is a long, gradual change, not an overnight switch. The best defence against uncertainty is knowing what your car is worth now and watching how that figure moves. Run a free valuation on moValue to compare prices for your car by registration, then revisit it every few months.