Gwynedd has 35 forecourts. Below are the 14 within 20 km of its centre, with live prices.
BP, PWLLHELI currently leads on price in Gwynedd at £1.64 — 6.6p below the city average. Filling a 55-litre tank here saves you £3.62 vs the average station.
The cheapest petrol in Gwynedd today is at BP, PWLLHELI (LL53 5LF) at £1.64 per litre. Prices are updated live from the official UK Government Fuel Finder data.
The average petrol (E10) price in Gwynedd is currently £1.70 per litre, which is 0.6p above the UK national average of £1.70. Supermarket stations like Tesco and Asda typically offer the lowest prices.
The cheapest diesel (B7) in Gwynedd is currently £1.88 per litre at Murco, CAERNARFON. The average diesel price across Gwynedd is £1.94.
Fuel prices across Gwynedd are updated live. 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 Gwynedd, typically 4–8p per litre below branded stations like Shell and BP. Among non-supermarket brands, JET and Gulf often offer competitive prices.
Gwynedd petrol prices are currently 0.6p per litre above the UK national average of £1.70. Filling up at a supermarket station can help reduce costs.
To save money on petrol in Gwynedd: (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 forecourts across Gwynedd and find the cheapest price near you before you travel.