Where to Find the Cheapest Petrol in the UK: Save £5-£20 Every Fill-Up
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| Cheapest petrol in the UK |
If you feel like fuel is getting more expensive every time you pass a petrol station, you’re not imagining it. Prices across the UK have been rising again in early 2026, and the difference between the cheapest and most expensive stations can be surprisingly large.
5 Simple Rules to Always Pay Less for PetrolIf you only remember a few things, make it these: • Never fill up without checking prices nearby • Avoid motorway petrol unless necessary • Use Costco or supermarkets whenever possible • Don’t assume your usual station is the cheapest • Plan ahead before your tank gets too low These habits take almost no effort, but they make a real difference over time. |
Why Petrol Prices Vary So Much in the UK
One of the biggest mistakes drivers make is assuming petrol prices are roughly the same everywhere. They’re not.
In many towns, you can see price gaps of 10p to 25p per litre within just a few miles. That means for a typical 50-litre tank, you could be paying £5 to £12 more just for choosing the wrong station.
This happens because:
- Retailers set prices independently
- Some stations update prices faster than others
- Location matters (busy roads = higher prices)
- Motorway services charge a premium
In short, price is local, not national. That’s why knowing where to fill up matters more than ever.
Read more: Top 10 Most Fuel-Efficient Cars in the UK (2026)
Top 5 Cheapest Places to Buy Petrol
Not all petrol stations are equal. Here’s how they typically compare in real-world UK conditions.
1. Costco (Often the Cheapest Overall)
If you have access to Costco, it’s usually the lowest price in your area.
Why it’s cheaper:
- High volume sales
- Lower margins
- Membership model
Many drivers report saving 5p to 15p per litre, which can mean £7–£10 per tank.
When it’s worth it:
- You already have a membership
- The location is on your regular route
If you have to drive far out of your way, the savings can disappear quickly.
2. Supermarket Petrol Stations (Reliable and Competitive)
Chains like Tesco, Asda, Morrisons, and Sainsbury’s are often among the cheapest.
Why they’re competitive:
- Fuel is used to attract shoppers
- Prices are updated frequently
- Strong competition between chains
They may not always be the absolute cheapest, but they’re usually consistently near the bottom of the price range.
3. Independent Petrol Stations (Hidden Bargains)
This is where many people miss out.
Some independent stations quietly undercut big brands, especially in less central areas. Others are more expensive, so you can’t assume either way.
The key is simple:
Check prices, don’t guess.
You might find a station near your route that’s cheaper than every supermarket nearby.
4. Branded Stations (Shell, BP, Esso)
These tend to sit in the middle to higher end of pricing.
You’re often paying extra for:
- Brand reputation
- Additives (premium fuels)
- Convenience locations
For regular fuel, the price difference is rarely worth it unless there’s no cheaper option nearby.
5. Motorway Service Stations (Avoid If You Can)
These are almost always the most expensive.
It’s not unusual to see prices 15p to 30p per litre higher than nearby towns.
Only fill up here if:
- You’re running low
- There are no alternatives nearby
Otherwise, it’s one of the easiest ways to overspend on fuel.
How to Find the Cheapest Petrol Near You
Knowing where to look is half the battle.
Before you fill up, take 30 seconds to check:
- PetrolPrices (website or app)
- myRAC app
- Data from the UK Fuel Finder system
These tools show real-time or near real-time prices in your area.
A simple habit:
Always compare at least 2 to 3 stations before filling up.
That alone can save you hundreds of pounds a year.
Real Example: How Much You Can Actually Save
Let’s keep it simple.
- Tank size: 55 litres
- Price difference: 10p per litre
That’s £5.50 saved in one fill-up.
If you fill up once a week:
- That’s about £286 per year
If the gap is 15p per litre:
- You’re saving over £400 per year
This is why location matters more than most people think.
Final Thought
Saving money on petrol in the UK isn’t about luck or timing. It’s about awareness.
Most drivers don’t overpay because prices are high.
They overpay because they don’t compare.
Once you start checking before you fill up, you’ll notice just how big the differences are. And once you see it, it’s hard to go back.
If you drive regularly, this is one of the easiest ways to keep more money in your pocket every single week.
