What is the cheapest petrol in Porthmadog today?

The cheapest petrol in Porthmadog is 153.9p per litre at Tesco PORTHMADOG SUPERSTORE - PETROL FILLING STATION, based on 3 stations with live prices. Unleaded (E10) averages 157.2p per litre.

What is the cheapest diesel in Porthmadog today?

The cheapest diesel in Porthmadog is 171.9p per litre at Tesco PORTHMADOG SUPERSTORE - PETROL FILLING STATION, based on 3 stations with live prices. Diesel averages 176.6p per litre.

Are supermarket petrol stations cheaper in Porthmadog?

Yes. Supermarket forecourts in Porthmadog currently average 153.9p per litre for unleaded, 5.0p less than the 158.9p 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 4 August 2026, the cheapest unleaded petrol in Porthmadog is 153.9p/L at Tesco PORTHMADOG SUPERSTORE - PETROL FILLING STATION, the cheapest diesel in Porthmadog is 171.9p/L at Tesco PORTHMADOG SUPERSTORE - PETROL FILLING STATION. Across 3 stations, unleaded averages 157.2p/L and diesel 176.6p/L. Supermarket forecourts in Porthmadog average 5.0p/L less than branded stations for unleaded.

Unleaded (E10)

153.9p cheapest

Avg 157.2pHigh 161.9pSpread 8.0p3 priced

Diesel

171.9p cheapest

Avg 176.6pHigh 181.9pSpread 10.0p3 priced

Cheapest Unleaded (E10) in Porthmadog

1. Tesco — PORTHMADOG SUPERSTORE - PETROL FILLING STATION · PORTHMADOG153.9p
2. Glanaber Garage — Glanaber Garage · PORTHMADOG155.9p
3. Shell — MFG PORTHMADOG · PORTHMADOG161.9p

Cheapest Diesel in Porthmadog

1. Tesco — PORTHMADOG SUPERSTORE - PETROL FILLING STATION · PORTHMADOG171.9p
2. Glanaber Garage — Glanaber Garage · PORTHMADOG175.9p
3. Shell — MFG PORTHMADOG · PORTHMADOG181.9p

Data freshness

Updated 3 Aug 2026, 15:36

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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