Filling up at a motorway service station costs about 17.1p more per litre for petrol than a local forecourt. On a typical 55-litre tank, that is roughly £9.41 extra, every single time you stop.
Most figures you see for the motorway premium are rough estimates. We took a different approach and measured it directly. On 1 June 2026 we compared every UK motorway service station in our database against the rest of the network. Here is what the numbers actually say.
Key Takeaways
- Motorway petrol costs 17.1p/litre more than local forecourts (about £9.41 a tank); diesel costs 13.8p more (£7.59 a tank) (PetrolPal data, June 2026)
- Supermarkets and ordinary forecourts price almost identically at ~159p, so the motorway is the lone outlier, not branded stations
- The premium is steepest in the West Midlands at 23.4p/litre
- A short detour off the motorway clears the premium in one stop
- We measured this across 168 motorway forecourts, not a sample
How Much More Is Fuel at Motorway Services?
Motorway services charge 17.1p more per litre for unleaded and 13.8p more for diesel than non-motorway forecourts (PetrolPal data, June 2026). On a 55-litre tank that is £9.41 extra for petrol and £7.59 for diesel. The gap is real and consistent, and it is wider than most drivers expect.
RAC Fuel Watch has long noted that motorway fuel runs dearer than other forecourts. Published estimates vary from 10p to 25p a litre, which is exactly why a single measured figure is useful.
| Fuel type | Motorway average | Local average | Premium per litre | Extra per 55L tank |
|---|---|---|---|---|
| Unleaded | 176.5p | 159.4p | +17.1p | £9.41 |
| Diesel | 198.3p | 184.5p | +13.8p | £7.59 |
| Premium unleaded | 194.3p | 176.6p | +17.7p | £9.74 |
| Premium diesel | 217.5p | 201.9p | +15.6p | £8.58 |
The premium grades are worth a mention. Super unleaded carries the biggest gap of all at 17.7p a litre, so performance-car drivers who only fill up on the motorway pay the most.
Is It Really Supermarket vs Branded, or Motorway vs Everywhere?
The familiar debate is supermarket versus branded fuel. Our data shows that gap barely exists: supermarkets average 159.2p for unleaded and ordinary branded forecourts 159.5p, a difference of 0.3p (PetrolPal data, June 2026). The motorway, at 176.5p, is the genuine outlier.
| Forecourt type | Unleaded average | Diesel average |
|---|---|---|
| Supermarket | 159.2p | 182.9p |
| Other (branded and independent) | 159.5p | 185.0p |
| Motorway services | 176.5p | 198.3p |
This reframes the usual advice. You do not need to find a supermarket to dodge the premium. Almost any forecourt off the motorway prices within a few pence of the cheapest. We covered the additive and quality side of this in our guide to supermarket fuel versus branded stations.
Which Motorway Services Have the Most Expensive Fuel?
A handful of motorway forecourts sit well above the motorway average. On our 1 June snapshot, Welcome Break Telford topped the unleaded list at 186.9p, with several others close behind at 185.9p (PetrolPal data, June 2026). Prices move daily, so treat these as a snapshot rather than a permanent ranking.
| Motorway forecourt | Region | Unleaded price |
|---|---|---|
| Welcome Break Telford (Shell) | West Midlands | 186.9p |
| ASDA Cherwell Valley Express | South East | 185.9p |
| ASDA Strensham Express | West Midlands | 185.9p |
| ASDA Stafford South Express | West Midlands | 185.9p |
| Welcome Break Warwick North and South (BP) | West Midlands | 185.9p |
At 186.9p, a 55-litre fill at the most expensive site costs about £15 more than the same fill at the national local average. That is most of a second tank lost across a year of motorway stops.
Why Is Motorway Fuel So Expensive?
Motorway forecourts charge more because they face almost no local competition and carry high site costs. A driver low on fuel between junctions has little choice, and operators price for that captive demand. Service-area rents and concession fees are also far higher than a roadside station pays.
There is no fuel-quality reason for the gap. Motorway fuel meets the same BS EN 228 and BS EN 590 standards as every other UK forecourt. You are paying for location and convenience, not a better product.
Tip
Does the Motorway Premium Vary by Region?
The premium is not uniform. It is steepest in the West Midlands, where motorway forecourts average 181.8p against a local average of 158.4p, a gap of 23.4p a litre (PetrolPal data, June 2026). The cluster of high-priced Midlands sites in our ranking above explains much of this.
| Region | Motorway average | Local average | Premium per litre |
|---|---|---|---|
| West Midlands | 181.8p | 158.4p | +23.4p |
| Yorkshire and the Humber | 178.0p | 157.4p | +20.6p |
| East Midlands | 178.4p | 158.1p | +20.3p |
| North West | 178.7p | 158.5p | +20.2p |
| South East | 179.6p | 159.9p | +19.7p |
| South West | 179.1p | 159.4p | +19.7p |
| Wales | 167.9p | 158.4p | +9.5p |
| East of England | 168.4p | 159.6p | +8.8p |
Most of England sits in a tight band around 20p a litre. Wales and the East of England are the kindest to drivers, with premiums under 10p. You can check live local prices for your area on our regional fuel price pages before you set off.
How Do You Avoid Paying Motorway Fuel Prices?
Plan the stop before you join the motorway, and use a short detour if you need to refuel mid-journey. The maths is firmly in your favour. Saving 17.1p a litre on a 55-litre tank is £9.41, while a 3-mile detour burns only a few pence of extra fuel.
The practical steps are simple:
- Fill up at a supermarket or local forecourt near home before a long trip
- If you must stop, leave at a junction and use the first town forecourt
- Avoid letting the gauge drop below a quarter on motorway runs
- Compare prices at your exit rather than defaulting to the services
Plan Your Cheapest Route
Enter your journey and find cheaper fuel stops near your junctions instead of the services.
Find Cheaper Fuel Near You
Compare live prices at 7,000+ UK stations, updated every 10 minutes with official government data.
How We Worked This Out
We compared all 168 UK motorway service-station forecourts in our database against every other station, using prices recorded on 1 June 2026. The underlying data comes from the government Fuel Finder scheme, the same official source that powers our live national fuel price index.
Per-tank figures assume a 55-litre fill, a common family-car size. We excluded permanently closed sites, and we left Northern Ireland out of the headline because it has no real motorway-services network, so its handful of flagged sites are not comparable. We also removed one remote Highland forecourt that the source feed had tagged as a motorway service station in error.
These are live retail prices, so the named-station figures will shift from day to day. The pattern, a clear and sizeable motorway premium, is stable.
Frequently Asked Questions
Why is fuel more expensive at motorway services?
Motorway forecourts face little nearby competition and carry high site rents and concession fees. Drivers low on fuel between junctions have few alternatives, so operators price for that captive demand. The fuel itself meets the same UK standards as any other forecourt.
How much more do you pay for petrol on the motorway?
About 17.1p more per litre for unleaded and 13.8p more for diesel than local forecourts, based on PetrolPal data from June 2026. On a 55-litre tank that works out at roughly £9.41 extra for petrol and £7.59 for diesel.
Which motorway services have the most expensive fuel?
On our 1 June 2026 snapshot, Welcome Break Telford led on unleaded at 186.9p, with several ASDA Express and Welcome Break sites in the Midlands close behind at 185.9p. Prices change daily, so check live figures before relying on any single ranking.
Is it worth leaving the motorway for cheaper fuel?
Usually yes. A 17.1p saving on a 55-litre tank is £9.41, far more than the few pence of fuel a short detour costs. Unless you are almost empty, a quick hop off a junction beats the services on price.
Can I cite this data?
Yes. Please cite as: PetrolPal, "Motorway Fuel Prices: We Checked 168 UK Forecourts," June 2026, https://petrolpal.co.uk/blog/real-cost-of-motorway-fuel-uk. The figures are drawn from official government Fuel Finder data and refresh on our fuel price index.
The Bottom Line
The motorway fuel premium is not a myth or a rounding error. It is about 17.1p a litre on petrol and 13.8p on diesel, worst in the West Midlands, and it comes from location rather than quality. A little planning before you join the motorway keeps that £9.41 a tank in your pocket. For everyday fill-ups, where you stop matters far more than which brand is on the sign.