Driving in the UK can be expensive, especially if you are new to the country or not used to comparing forecourt prices. Petrol and diesel are sold by the litre, prices are shown in pence per litre, and the cheapest station is not always the closest or most obvious one.
The good news is that fuel price information is now easier to check before you fill up. The UK government's Fuel Finder scheme requires fuel retailers to update prices within 30 minutes of a change. That data is used by services such as fuel.co.uk, where drivers can search by postcode or current location and compare nearby petrol and diesel prices.
Understand the main UK fuel grades
Most UK drivers will use one of these fuel types:
- unleaded petrol E10
- premium unleaded petrol E5
- diesel B7
- super diesel
E10 is the standard unleaded petrol sold at most forecourts and is suitable for most petrol cars made after 2011. E5 is premium unleaded and is often used by older vehicles or drivers whose car requires it. Diesel drivers should check whether they need standard diesel or a premium diesel product.
Always use the grade recommended for the vehicle. Saving money on the wrong fuel is not a saving.
Search by postcode before filling up
In the UK, postcodes are precise. A search around a postcode can show stations within a set distance and help you compare by price, distance or brand.
This is useful when:
- you have just moved to a new area
- you are collecting a hire car
- you are planning a long journey
- you are driving outside your normal town
- you want to avoid expensive motorway fuel stops
If you are travelling, compare prices near home, near the destination and near planned stops. Sometimes the cheapest sensible fill is not where you start, but where you leave the motorway or pass a supermarket forecourt.
Think in pounds, not only pence
UK forecourt signs show pence per litre. A small number can feel unimportant until you multiply it by a full tank.
For example, a 6p per litre difference saves GBP 3 on a 50 litre fill. A 10p difference saves GBP 5. If that cheaper station is already on your route, the decision is easy. If it requires a long detour, the saving may disappear.
The government says Fuel Finder is intended to help drivers compare prices more easily and improve competition. Its factsheet estimates average savings of around GBP 40 per year for households that own a car.
Check the update time
Fuel prices can change during the day. A reliable price tool should show recently refreshed data and make clear that the pump price is still the final price you pay. fuel.co.uk says its data is refreshed approximately every 30 minutes from official government data.
That makes it a useful planning tool, especially when combined with common sense. If a station is much cheaper and only a short distance away, it may be worth choosing. If the difference is tiny and the detour is awkward, convenience may matter more.
The practical habit is simple: before you fill up, check the local price. It takes less than a minute and can prevent regular overpaying.