Campervan Engines: Diesel, Petrol or Electric — What Should You Buy?

Ask any motorhome owner what engine their van has and the answer is almost always diesel. It has been that way for decades because diesel suits big, heavy vans: it tows, it returns decent motorway economy and it has the low-end torque a loaded camper needs. But petrol vans are becoming more common, and electric campervans are finally real. Understanding the trade-offs will save you money and disappointment. Start your search by filtering campervans by engine type.

Why diesel still makes sense

A modern diesel campervan typically returns 30 to 40 mpg on a gentle tour, and the engines are strong, proven units with enormous parts supply in the UK and Europe. For long trips and heavy payloads, diesel is still the sensible default. The downsides are the modern pollution kit — DPFs and AdBlue systems — which only really thrives on longer runs, and tighter town emissions zones such as London's ULEZ, which now excludes many older diesels.

The case for petrol

Petrol engines are cleaner on short journeys, quieter and simpler. They suit people who do lots of local miles and the odd weekend trip, and they avoid the DPF headaches of a diesel that never gets a proper run. The catches are fuel economy — expect more like 20 to 28 mpg in a converted van — and weaker torque, which matters when you are fully loaded on a hill. A petrol van is a sensible choice for light users, but it will cost more at the pump on a long tour.

Electric campervans: are they there yet?

Electric vans such as the VW ID. Buzz-based conversions are on the market, and they are brilliant for day trips and city use. For serious touring they still struggle: ranges around 150 to 200 miles empty mean far less when you add a couple of tonnes of conversion, and campsite charging infrastructure remains patchy in rural UK. If you want an electric camper today, budget carefully for charging stops and treat 100 miles of loaded range as your realistic planning figure.

How to decide

• Do more than a few thousand motorway miles a year? Diesel.
• Mostly local trips and weekends, light use? Petrol is simpler and cheaper to buy.
• Want zero local emissions and mainly day trips? Electric, if you can find the right conversion.

Whichever you pick, check the service history for the engine type that fits your use. For more on keeping your choice alive, our article on automatic vs manual gearboxes covers the other big decision you will face.