Extended Range Electric Vehicles: What an EREV Is and Whether It Is Coming to the UK

Extended range electric vehicles (EREVs) are electric cars whose wheels are always driven by an electric motor, with a small petrol engine on board that only makes electricity once the battery runs low. Two are on sale in the UK in November 2026, both from Leapmotor, and the next wave arrives in 2027 from Chinese brands that have not yet confirmed a UK range extender.

The idea is not new, but it is back on the agenda because Chinese brands that build range extenders for their home market are now bringing them to Europe, and Volkswagen is planning them for the US. This guide explains how they work, which ones you can buy, how the UK taxes them, and whether one makes more sense for you than a long range electric car.

What is an extended range electric vehicle?

An extended range electric vehicle is a car with a battery for everyday driving and a petrol engine that acts purely as a generator. You plug it in at home or at a public charger like any electric car, and for shorter trips it never burns fuel. When the battery falls to a set level, the engine starts and supplies electricity to the motor, so the car keeps going on electric drive with the engine running in the background.

That last point is what separates range extender cars from a plug-in hybrid. In a plug-in hybrid such as the MG HS PHEV, which has 75 miles of electric range and a £32,495 list price, the engine is connected to the wheels and does much of the work at motorway speed. In an EREV the engine never turns the wheels. The driving experience stays close to an electric car’s: single-speed, quiet and with instant response.

A third type, the Nissan e-Power system, also uses its engine only as a generator but has no charging socket, so it is a self-charging hybrid rather than an extended range car. The government names e-Power among the hybrids that can stay on sale until 2035.

Which range extender cars can you buy in the UK?

The Leapmotor B10 Hybrid EV and the Leapmotor C10 REEV are the two range extenders on the UK market in November 2026. Mazda’s rotary-engined MX-30 R-EV has gone, and two more brands are due in 2027.

Car	UK status, November 2026	List price	Battery	Electric-only range	Total range
Leapmotor B10 Hybrid EV	On sale	£31,495 (April 2026)	18.8 kWh	53 miles	559 miles
Leapmotor C10 REEV	On sale	£36,500 (February 2026)	28.4 kWh	90 miles WLTP	Over 600 miles
Mazda MX-30 R-EV	Withdrawn from Europe, January 2026	Not on sale	17.8 kWh	About 85 km	Over 650 km
iCaur V27	UK launch early 2027; UK powertrain not confirmed	Not announced	20 or 34 kWh (international versions)	Not announced	Not announced
Li Auto (model not named)	UK launch autumn 2027	Not announced	Not announced	Not announced	Not announced

Prices and figures: Auto Express for the B10, the RAC for the C10, electrive for the Mazda, Auto Express for the iCaur and Regit for Li Auto; all listed in the sources.

The B10 Hybrid EV uses a 1.5-litre petrol engine as its generator. Auto Express’s testers returned about 47mpg on a mixed drive that used both electric and hybrid modes, and found the boot shrinks from 430 litres in the electric B10 to 330 litres, because the engine and fuel tank take up space. The fully electric B10 is listed at £32,495 with 270 miles of WLTP range.

The Leapmotor C10 REEV has the larger battery of the pair. The RAC quotes 90 miles of WLTP electric range, a 50-litre tank, DC charging at up to 65 kW and an official 706mpg, which the RAC’s reviewer says you are unlikely to achieve unless your journeys stay within the electric range. The same review judged the smaller B10 the better-resolved car. The electric C10 costs the same £36,500 and covers 263 miles WLTP.

Is the EREV coming to the UK in a bigger way?

Yes, but slowly, and mainly through Chinese brands rather than European ones. Chery’s new iCaur brand starts UK sales with the V27 in early 2027. Abroad the V27 is a range extender with a 1.5-litre petrol generator and a 20 or 34 kWh battery, but Auto Express reported on 15 October 2026 that its UK specification is yet to be confirmed.

Li Auto, which sells the L6 range extender in China, told the Paris motor show that it will open in the UK in autumn 2027 with family cars in electric and range-extender forms. It has not named the UK models or given prices, so read our Li Auto UK launch coverage as a plan rather than a line-up.

Mazda shows how hard the format can be to sell. electrive reported on 14 January 2026 that the MX-30 R-EV was being phased out in Europe after a Mazda spokesperson told Autocar it had “sold relatively poorly in Europe”, and its rotary range extender has no direct replacement.

The big British name is not joining in. JLR’s plan of 17 June 2026 gives Range Rover, Defender and Discovery a choice of mild hybrid, full hybrid, plug-in hybrid or fully electric power, with Jaguar electric only, and does not mention a range extender. The first Range Rover on JLR’s new EMA platform, the Range Rover GT built at Halewood, launches as an electric car with a full hybrid planned later. Our guide to the electric Defender and JLR’s EV line-up covers the timing.

In the US the picture is different: electrive reported in February 2026 that Volkswagen’s revived Scout brand will launch with range-extender models only, with production from summer 2028. No UK plan has been announced.

How are range extender cars taxed in the UK?

The UK taxes a range extender as a hybrid, because it has a tailpipe. That shapes the costs in four ways.

No grant. The Electric Car Grant, worth up to £3,750 in band 1 and up to £1,500 in band 2, only covers cars that produce 0g of CO2 per km at the tailpipe and travel at least 100 miles on battery power.

Vehicle tax. Hybrid and alternative fuel cars registered from 1 April 2017 pay a first-year rate set by CO2, £115 at 1 to 50 g/km, then the £200 standard rate. The £440 a year expensive car supplement applies above a £40,000 list price for cars with an engine, against £50,000 for electric cars. Both Leapmotors are listed below £40,000.

Company car tax. In the 2026 to 2027 tax year, a fully electric car pays benefit-in-kind at 4%. A car emitting 1 to 50 g/km pays 4% with an electric range of 130 miles or more, 7% at 70 to 129 miles, 10% at 40 to 69 miles, 14% at 30 to 39 miles and 16% below 30 miles. On those bands, a 90-mile range like the C10’s sits at 7% when its CO2 is within 1 to 50 g/km. The B10 Hybrid EV’s official figure is 55 g/km, according to Auto Express, which on its own puts it at 18%. HMRC’s easement deems the CO2 of plug-in hybrids first registered from 1 January 2025 at 51 g/km or more under the newer emissions standard to be 1, for company cars first provided by 5 April 2028; where it applies, the B10’s 53-mile range falls in the 10% band.

The 2030 rules. When the government confirmed in April 2025 that new petrol and diesel car sales end in 2030, it said hybrid cars can be sold until 2035. Our explainer on the ZEV mandate and car prices sets out how makers are meeting their electric sales targets in the meantime.

Worked example: what a big battery costs to run instead

The alternative to a range extender for long trips is a bigger battery, and the Range Rover Electric shows the far end of that approach. JLR lists it from £154,070 in November 2026 for the EV550 Autobiography, with a 118.5 kWh usable battery, 372 miles of WLTP range and a 10 to 80% rapid charge in around 22 minutes.

EV Compared’s method divides WLTP miles by usable kWh and multiplies by the tariff, ignoring charging losses; our methodology page gives the full method and rates. On those inputs:

• Efficiency works out at 3.14 miles per kWh.
• A full charge costs £7.70 on Intelligent Octopus Go at 6.5p/kWh, £31.19 at the 26.32p/kWh price cap (1 October to 31 December 2026) and £97.17 on a public rapid charger at 82p/kWh, the Zapmap price index for October 2026.
• That is 2.1p a mile at home off-peak, 8.4p at the price cap and 26.1p on rapid chargers.
• 8,000 miles a year costs £166 at home off-peak, £671 at the price cap and £2,090 if every mile came from rapid chargers.
• A full charge takes 16.9 hours on a 7 kW wallbox.
• Ten minutes on a rapid charger adds 118 miles on our assumption of 70% of the battery in the 22-minute 10 to 80% time. JLR’s own figure is 137 miles in 10 minutes.
• You pay £414 of list price for each mile of WLTP range.

Because the list price is above £50,000, it also pays the £440 expensive car supplement each year for five years from its second year of tax. The point for range extender buyers is the home charging figure: off-peak electricity makes battery miles cheap even in a 118.5 kWh car, while a range extender’s long trips run on petrol once its small battery is empty. If you can charge at home, a home charger from Best Chargers is what unlocks the 2.1p a mile.

Should you go fully electric instead?

For most UK drivers, yes. Fully electric cars with long range now cost less than either Leapmotor range extender: in our spec data the Renault Megane E-Tech covers 306 miles WLTP from £28,445. The electric Leapmotor B10 covers 270 miles from £32,495, £1,000 more than the Hybrid EV. A fully electric car can also qualify for the grant, pays 4% company car tax and keeps its full boot.

A range extender makes more sense if you have home charging but make regular long trips through areas with few rapid chargers, or if you want electric driving day to day without relying on public charging at all. It does not suit drivers without a driveway, because without regular charging it runs as a petrol car with an electric motor, and the RAC’s reviewer says the C10’s official 706mpg is unlikely unless journeys stay within its electric range.

Our list of the longest range electric cars over 300 miles is the place to start if range is your worry.

What it means for choosing a car

On published data, the extended range electric vehicle is a niche choice in the UK in November 2026: two models from one brand, no grant, higher company car tax than a fully electric car and less boot space than the electric versions. It suits a narrow group well, namely home chargers with long, irregular journeys who want electric driving day to day and a petrol backstop. For everyone else, a long range electric car is cheaper to tax, simpler to own and now costs no more to buy. EV Compared has not driven these cars; this verdict rests on the manufacturer figures and the reviews cited.

Expect the choice to widen in 2027 if iCaur and Li Auto bring their range extenders to the UK. Until they confirm UK specifications, the Leapmotor B10 and C10 are the whole market.