Which supermarket has the cheapest fuel today?
National average petrol and diesel prices for Asda, Tesco, Morrisons and Sainsbury's — updated daily from live station data.
Cheapest Petrol
Morrisons
160.5p
national avg / litre
Cheapest Diesel
Tesco
181.4p
national avg / litre
Full comparison — sorted by cheapest petrol
| Supermarket | Avg Petrol | Avg Diesel | Stations |
|---|---|---|---|
|
|
160.5p | 181.7p | 341 |
|
|
160.7p | 181.4p | 516 |
|
161.3p | 184.0p | 405 |
Averages from 3 Sep 2026 · updated nightly
Find the cheapest supermarket near you
National averages don't tell you what's cheapest on your doorstep. Enter your postcode to see every nearby station ranked by price.
Why are supermarkets cheapest?
Supermarkets treat fuel as a loss-leader to drive footfall. They buy in enormous volumes and pass the savings on. A typical supermarket forecourt is 4–6p cheaper per litre than a branded station.
Read the full guide →Is supermarket fuel lower quality?
No. All UK forecourt fuel meets the same EN228 (petrol) and EN590 (diesel) standards. Supermarket fuel is identical in specification to BP or Shell — the difference is in premium additive packages, not base quality.
More on fuel quality →