What is the cheapest petrol in Porthmadog today?

The cheapest petrol in Porthmadog is 169.9p per litre at Tesco PORTHMADOG SUPERSTORE - PETROL FILLING STATION, based on 3 stations with live prices. Unleaded (E10) averages 173.9p per litre.

What is the cheapest diesel in Porthmadog today?

The cheapest diesel in Porthmadog is 191.9p per litre at Tesco PORTHMADOG SUPERSTORE - PETROL FILLING STATION, based on 3 stations with live prices. Diesel averages 197.2p per litre.

Are supermarket petrol stations cheaper in Porthmadog?

Yes. Supermarket forecourts in Porthmadog currently average 169.9p per litre for unleaded, 6.0p less than the 175.9p average at branded and independent stations.

Porthmadog Fuel Prices

Find the cheapest petrol and diesel in Porthmadog. Live prices from 3 fuel stations, updated hourly from the official Fuel Finder feed.

Fuel price answer

cheapest petrol and diesel in Porthmadog

As of 18 September 2026, the cheapest unleaded petrol in Porthmadog is 169.9p/L at Tesco PORTHMADOG SUPERSTORE - PETROL FILLING STATION, the cheapest diesel in Porthmadog is 191.9p/L at Tesco PORTHMADOG SUPERSTORE - PETROL FILLING STATION. Across 3 stations, unleaded averages 173.9p/L and diesel 197.2p/L. Supermarket forecourts in Porthmadog average 6.0p/L less than branded stations for unleaded.

Unleaded (E10)

169.9p cheapest

Avg 173.9pHigh 175.9pSpread 6.0p3 priced

Diesel

191.9p cheapest

Avg 197.2pHigh 199.9pSpread 8.0p3 priced

Cheapest Unleaded (E10) in Porthmadog

1. Tesco — PORTHMADOG SUPERSTORE - PETROL FILLING STATION · PORTHMADOG169.9p
2. Glanaber Garage — Glanaber Garage · PORTHMADOG175.9p
3. Shell — MFG PORTHMADOG · PORTHMADOG175.9p

Cheapest Diesel in Porthmadog

1. Tesco — PORTHMADOG SUPERSTORE - PETROL FILLING STATION · PORTHMADOG191.9p
2. Glanaber Garage — Glanaber Garage · PORTHMADOG199.9p
3. Shell — MFG PORTHMADOG · PORTHMADOG199.9p

Data freshness

Updated 17 Sept 2026, 09:36

Methodology

PetrolPal groups stations by country, region, and city from postcode-derived location data. Local pages are designed to help drivers compare nearby petrol and diesel prices before choosing where to fill up.

Citation

Source: PetrolPal, using official UK forecourt fuel price data. Cite: https://petrolpal.co.uk/fuel-prices/wales/porthmadog

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About Porthmadog Fuel Prices

PetrolPal tracks live fuel prices in Porthmadog using official UK Government data, updated hourly. Compare petrol and diesel prices from supermarkets, branded stations, and independents to find the cheapest fuel near you.

Prices in Porthmadog are based on stations in the Wales. View the Porthmadog statistics page for detailed price analytics including brand averages, price distribution, and historical trends.

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