What is the cheapest petrol in Porthmadog today?

The cheapest petrol in Porthmadog is 156.9p per litre at Tesco PORTHMADOG SUPERSTORE - PETROL FILLING STATION, based on 3 stations with live prices. Unleaded (E10) averages 159.6p per litre.

What is the cheapest diesel in Porthmadog today?

The cheapest diesel in Porthmadog is 176.9p per litre at Tesco PORTHMADOG SUPERSTORE - PETROL FILLING STATION, based on 3 stations with live prices. Diesel averages 180.2p per litre.

Are supermarket petrol stations cheaper in Porthmadog?

Yes. Supermarket forecourts in Porthmadog currently average 156.9p per litre for unleaded, 4.0p less than the 160.9p 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 14 August 2026, the cheapest unleaded petrol in Porthmadog is 156.9p/L at Tesco PORTHMADOG SUPERSTORE - PETROL FILLING STATION, the cheapest diesel in Porthmadog is 176.9p/L at Tesco PORTHMADOG SUPERSTORE - PETROL FILLING STATION. Across 3 stations, unleaded averages 159.6p/L and diesel 180.2p/L. Supermarket forecourts in Porthmadog average 4.0p/L less than branded stations for unleaded.

Unleaded (E10)

156.9p cheapest

Avg 159.6pHigh 161.9pSpread 5.0p3 priced

Diesel

176.9p cheapest

Avg 180.2pHigh 181.9pSpread 5.0p3 priced

Cheapest Unleaded (E10) in Porthmadog

1. Tesco — PORTHMADOG SUPERSTORE - PETROL FILLING STATION · PORTHMADOG156.9p
2. Shell — MFG PORTHMADOG · PORTHMADOG159.9p
3. Glanaber Garage — Glanaber Garage · PORTHMADOG161.9p

Cheapest Diesel in Porthmadog

1. Tesco — PORTHMADOG SUPERSTORE - PETROL FILLING STATION · PORTHMADOG176.9p
2. Glanaber Garage — Glanaber Garage · PORTHMADOG181.9p
3. Shell — MFG PORTHMADOG · PORTHMADOG181.9p

Data freshness

Updated 11 Aug 2026, 23:14

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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