All 8,142 UK forecourts were checked at 10:07 (Europe/London) under the statutory fuel price scheme; each card above shows when that station last changed its price.
See all 4 stations in PorthmadogPetrol (Unleaded) in Porthmadog costs from 174.9p to 177.9p a litre right now, 175.9p on average across 4 stations. Diesel in Porthmadog costs from 199.9p to 203.9p a litre right now, 201.7p on average across 4 stations.The cheapest is Essar, 0.6 km from the centre. Latest price change here: 17:21 (Europe/London).
Diesel in Porthmadog is up 1.1p compared with a week ago, measured on the 4 stations that reported a price on both days.
UK average: the national average on our UK page, from the Fuel Finder reading of 22 Oct 2026, 10:07 UK time.
A 55-litre fill-up at the cheapest station in Porthmadog instead of the dearest one, and instead of the city average.
Supermarket forecourts in Porthmadog: Tesco.
Calculated from the same live prices as the station table below — 4 stations in Porthmadog, at the update time shown above.
| Station | |||||
|---|---|---|---|---|---|
|
1
Essar
Essar · LL49 9NY
|
0.6 km | 199.9p | 174.9p | — | — |
|
2
Tesco - PORTHMADOG
Tesco · LL49 9NU
|
0.4 km | 199.9p | 174.9p | 185.9p | — |
|
3
Shell - PORTHMADOG
Shell · LL49 9LU
|
0.4 km | 202.9p | 175.9p | 199.9p | 219.9p |
|
4
Glanaber Garage - PORTHMADOG
Glanaber Garage · LL49 9TP
|
0.8 km | 203.9p | 177.9p | — | — |
2026-09-22: 194.7p 2026-10-22: 201.7p
Diesel is up 1.1p versus 7 days ago (4 stations with prices on both days).
Tracked continuously: 4 of 4 stations · 2026-09-22 to 2026-10-22
| Brand | From | Average | Stations |
|---|---|---|---|
| Essar | 199.9p | 199.9p | 1 |
| Tesco | 199.9p | 199.9p | 1 |
| Shell | 202.9p | 202.9p | 1 |
| Glanaber Garage | 203.9p | 203.9p | 1 |
Porthmadog itself has 4 petrol stations with live prices tracked on fuel-prices.eu. Including the towns within roughly 10 km, the total rises to 7 stations. Data comes from the UK official fuel price data scheme.
The cheapest diesel in Porthmadog today is 199.9p a litre at Essar. Prices in nearby towns are often lower — use the +2 / +5 / +10 km filter above to compare.
The average diesel price in Porthmadog is 201.7p a litre, 2.6p above the national average of 199.1p. The UK average is the one on our UK page, from the Fuel Finder reading of 22 Oct 2026, 10:07 UK time.
The cheapest petrol in Porthmadog today is 174.9p a litre at Essar, 0.6 km from the city centre. It is 1.0p below the Porthmadog average of 175.9p across the 4 stations we track in the city.
Yes. Supermarket forecourts in Porthmadog (Tesco) average 199.9p a litre for diesel across 1 stations, against 202.2p at the other 3 stations — 2.3p cheaper.
Prices are updated daily from the UK official fuel price data scheme (retailer price feeds published under the government fuel-finder initiative).
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Prices are collected from the UK official fuel price data scheme — the open price feeds published by major retailers under the government fuel-finder initiative — and refreshed daily. Prices are indicative and may differ at the pump. See also: live map of the UK · all live markets.
Contains public sector information licensed under the Open Government Licence v3.0. Source: DESNZ Fuel Finder · Report an error in the data.