What is the cheapest petrol in Cardiff today?

The cheapest petrol in Cardiff is 158.9p per litre at BP RONTEC PENRHOS, based on 24 stations with live prices. Unleaded (E10) averages 162.1p per litre.

What is the cheapest diesel in Cardiff today?

The cheapest diesel in Cardiff is 174.9p per litre at Tivoli Service Station Tivoli Service Station, based on 24 stations with live prices. Diesel averages 181.5p per litre.

Are supermarket petrol stations cheaper in Cardiff?

Yes. Supermarket forecourts in Cardiff currently average 161.3p per litre for unleaded, 1.6p less than the 162.9p average at branded and independent stations.

Cardiff Fuel Prices

Find the cheapest petrol and diesel in Cardiff. Live prices from 24 fuel stations, updated hourly from the official Fuel Finder feed.

Fuel price answer

cheapest petrol and diesel in Cardiff

As of 24 August 2026, the cheapest unleaded petrol in Cardiff is 158.9p/L at BP RONTEC PENRHOS, the cheapest diesel in Cardiff is 174.9p/L at Tivoli Service Station Tivoli Service Station. Across 24 stations, unleaded averages 162.1p/L and diesel 181.5p/L. Supermarket forecourts in Cardiff average 1.6p/L less than branded stations for unleaded.

Unleaded (E10)

158.9p cheapest

Avg 162.1pHigh 164.9pSpread 6.0p24 priced

Diesel

174.9p cheapest

Avg 181.5pHigh 185.9pSpread 11.0p24 priced

Cheapest Unleaded (E10) in Cardiff

1. BP — RONTEC PENRHOS · CARDIFF158.9p
2. Asda — ASDA CARDIFF CORYTON SUPERCENTRE · CARDIFF159.7p
3. Tesco — CARDIFF EXTRA - PETROL FILLING STATION · CARDIFF159.9p
4. Tesco — ST MELLONS SUPERSTORE - PETROL FILLING STATION · CARDIFF159.9p
5. Tesco — CARDIFF TYN-Y-PARC EXPRESS · CARDIFF159.9p

Cheapest Diesel in Cardiff

1. Tivoli Service Station — Tivoli Service Station · CARDIFF174.9p
2. BP — RONTEC PENRHOS · CARDIFF176.9p
3. Asda — ASDA CARDIFF CORYTON SUPERCENTRE · CARDIFF178.7p
4. Tesco — CARDIFF TYN-Y-PARC EXPRESS · CARDIFF178.9p
5. Asda — ASDA LECKWITH ROAD SUPERSTORE · CARDIFF179.7p

Data freshness

Updated 22 Aug 2026, 08:01

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/cardiff

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About Cardiff Fuel Prices

PetrolPal tracks live fuel prices in Cardiff 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 Cardiff are based on stations in the Wales. View the Cardiff statistics page for detailed price analytics including brand averages, price distribution, and historical trends.

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