Where is the cheapest diesel for motorhomes right now?

Last reviewed: 26 October 2026

Which fuel retailers are cheapest for diesel right now?

Supermarket forecourts are where motorhome owners consistently save the most on diesel. Asda has led or shared the top spot in the Campercation monthly fuel price league more times than any other retailer. Morrisons and Sainsbury's are close behind. Tesco holds competitive prices too, though it varies more by location.

The gap between a supermarket forecourt and a motorway service station can be significant. On a typical 120-litre fill, that difference adds up fast. The Campercation fuel price league exists precisely to make that comparison easy, updated monthly with real pump prices from across the UK.

Independent forecourts are a mixed bag. Some family-run stations in busy tourist areas price competitively to win local trade. Others, particularly in remote parts of Scotland, Wales and the South West, charge more simply because they can. Always check before you pull in with a big rig.

Why do fuel prices vary so much by location?

Retail diesel prices in the UK are set by individual forecourt operators, not by the oil companies whose brand sits above the door. That's why two BP stations 20 miles apart can charge different prices. Factors that push prices up include remoteness (higher transport costs for the fuel), low competition in the area, and high footfall from tourists who won't return and won't shop around.

Supermarkets use fuel as a footfall driver. They price it aggressively to get you into the car park and into the shop. For motorhome owners who need to fill a 100-litre-plus tank, that strategy works in your favour. It's worth going slightly out of your way to reach one.

Regional variation also matters. Prices in London and the South East tend to track closely to the national average. Prices in rural Scotland, Cornwall and parts of Wales can run noticeably higher, even at the same branded retailer. If you're touring the NC500 or heading deep into Snowdonia, fill up before you leave the main road.

How does the Campercation fuel price league work?

The Campercation motorhome fuel price league is a monthly snapshot of diesel pump prices at UK retailers, compiled specifically for motorhome and campervan owners. It ranks retailers from cheapest to most expensive so you can see at a glance where to fill up and where to avoid.

The league is published every month, so it reflects current pricing rather than last quarter's averages. Fuel prices move with crude oil, currency shifts and wholesale market conditions, which means a retailer that topped the cheapest list in August might not hold that position in October. Checking it before a long trip takes 30 seconds and can save you real money over the course of a touring week.

Alongside the fuel league, Campercation's live map lists 19,350+ stopovers as at 20 September 2026, including fuel points, LPG stations, waste disposal and water across the UK and Europe. That means you can plan your route, your overnight stops and your fuel stops all in one place.

Should I use AdBlue and does it change where I fill up?

Most diesel motorhomes registered after 2015 require AdBlue (diesel exhaust fluid) to meet Euro 6 emissions standards. AdBlue consumption is separate from diesel but it's still a running cost worth tracking. Supermarket forecourts increasingly stock AdBlue in pump or container form. Motorway services almost always have it, though at a higher price per litre than supermarkets or motor factors.

If your motorhome has a large AdBlue tank (some run to 20 or even 40 litres), buying in bulk from a motor factor or online and carrying a container is considerably cheaper than paying pump prices on the road. Don't let the AdBlue tank run dry: many engines will refuse to start without it, and recovery from a remote layby is not a pleasant afternoon.

What's the cheapest way to fill up on a motorhome touring route?

Plan your fuel stops the same way you plan your overnight stops: in advance, not in desperation. Running low on a remote route forces you into expensive rural stations. Running low on the motorway forces you into services. Both are avoidable.

A practical approach that works for many motorhome owners:

• Check the motorhome fuel price league before you leave to know which retailers are cheapest this month.
• Use the Campercation map to locate fuel points on or near your planned route.
• Fill to the top at a supermarket forecourt before leaving a town or city, rather than topping up little and often at rural stations.
• On long routes (NC500, coastal Wales, the Pennines), identify the last cheap forecourt before you head into remoter territory and fill there.
• Keep an eye on your range display and aim to refuel at 25–30% remaining, not 5%.

For European touring, the price dynamic shifts. France generally offers cheaper diesel than the UK at autoroute supermarkets (Intermarché, Leclerc, E.Leclerc). Germany's autobahn services are expensive; fill up at Aldi or Lidl petrol stations instead. Italy's motorway prices are among the highest in Europe. Campercation's coverage of aires, Stellplatz and aree di sosta helps you plan stops near affordable fuel on the Continent too.

Does the type of diesel matter for a motorhome engine?

Standard ULSD (ultra-low sulphur diesel) from any reputable forecourt is fine for most motorhome engines. Premium diesel products (Shell V-Power Diesel, BP Ultimate, Esso Synergy Supreme+) cost more per litre and claim to clean injectors and improve economy. The evidence for meaningful real-world economy gains in a heavy motorhome is mixed at best.

If your engine is running well, there's no strong case for paying the premium. Save the price difference, use it to buy an extra night at a pub stopover, and let the engine do what it was designed to do on standard diesel.

Ready to find the cheapest fuel on your next route? Check the latest Campercation motorhome fuel price league and use the live map to locate fuel points, pub stopovers, waste disposal and water all in one place at campercation.com.