Live fuel prices from 85 stations across Cornwall. South West. Find the cheapest petrol and diesel near you.
St Blazey Service Station currently leads on price in Cornwall at 155.9p — 4.8p below the city average. Filling a 55-litre tank here saves you £2.62 vs the average station.
The cheapest petrol in Cornwall today is at St Blazey Service Station (PL24 2NS) at 155.9p per litre. Prices are updated every 30 minutes from the official UK Government Fuel Finder data.
The average petrol (E10) price in Cornwall is currently 160.7p per litre, which is 3.9p above the UK national average of 156.8p. Supermarket stations like Tesco and Asda typically offer the lowest prices.
The cheapest diesel (B7) in Cornwall is currently 179.9p per litre at Queens Garage. The average diesel price across Cornwall is 188.6p.
Fuel prices across Cornwall are updated every 30 minutes. All major UK fuel retailers are legally required to report prices to the government's Fuel Finder scheme, which FuelSignal pulls from automatically.
Supermarket fuel stations — Tesco, Asda, Morrisons, and Sainsbury's — are almost always the cheapest in Cornwall, typically 4–8p per litre below branded stations like Shell and BP. Among non-supermarket brands, JET and Gulf often offer competitive prices.
Cornwall petrol prices are currently 3.9p per litre above the UK national average of 156.8p. Filling up at a supermarket station can help reduce costs.
To save money on petrol in Cornwall: (1) Use supermarket stations which are typically 5–8p cheaper than branded forecourts. (2) Avoid filling up near motorway services which charge a significant premium. (3) Use FuelSignal to compare all 85 stations in Cornwall and find the cheapest price near you before you travel.