Embed

Cheapest Petrol & Diesel in Porthmadog Today

☆ Save

Last updated: · Prices refresh every 30 minutes from the UK government's Fuel Finder service.

Cheapest Petrol in Porthmadog

149.9p per litre at Essar, Porthmadog
Area average: 153.7p — save up to 3.8p/litre

Cheapest Diesel in Porthmadog

169.9p per litre at Essar, Porthmadog
Area average: 172.9p — save up to 3.0p/litre
See all 4 stations View on map 30-day trend Annual cost
Browse by brand: EssarGlanaber GarageShellTesco

Worth the Drive?

Petrol averages 3.8p less in Criccieth (149.9p vs 153.7p here). The round trip is about 6 miles each way, costing roughly £2.17 in fuel at 35 mpg. A 60‑litre fill would save £2.25 — a net saving of £0.08 after the return journey.

Diesel averages 3.0p less in Criccieth (169.9p vs 172.9p here). The round trip is about 6 miles each way, costing roughly £1.72 in fuel at 50 mpg. A 60‑litre fill would save £1.80 — a net saving of £0.08 after the return journey.

There are 4 fuel stations in Porthmadog reporting live prices via the UK government's Fuel Finder service. Unleaded petrol (E10) averages 153.7p per litre across 4 stations. Diesel (B7) averages 172.9p across 4 stations. Unleaded is 0.6p above the national average of 153.1p.

Use our fuel station finder to find the most economical place to fill up near you, or calculate the fuel cost of a longer trip from Porthmadog.

Fuel Stations in Porthmadog

Station ⇅ Postcode ⇅ E10 ⇅ E5 ⇅ B7 ⇅ SDV ⇅
Essar, Porthmadog LL49 9NY 149.9p Cheapest – 169.9p Cheapest –
Glanaber Garage, Porthmadog LL49 9TP 160.9p – 178.9p –
Shell, Porthmadog LL49 9LU 153.9p 179.9p 171.9p 189.9p Cheapest
Tesco, Porthmadog LL49 9NU 149.9p 159.9p Cheapest 170.9p –

Station Map

Nearby Towns

Penrhyndeudraeth
1 stations
Unleaded avg 155.9p
Diesel avg 174.9p
Criccieth
1 stations
Unleaded avg 149.9p
Diesel avg 169.9p
Harlech
2 stations
Unleaded avg 161.9p
Diesel avg 176.4p
Trawsfynydd
2 stations
Unleaded avg 154.5p
Diesel avg 176.0p
Dyffryn Ardudwy
1 stations
Unleaded avg 152.9p
Diesel avg 172.9p
Llannor
1 stations
Unleaded avg 153.9p
Diesel avg 169.9p
Y Ffôr
1 stations
Unleaded avg 153.9p
Diesel avg 169.9p
Pwllheli
2 stations
Unleaded avg 158.4p
Diesel avg 175.4p

Average Petrol and Diesel Prices in Porthmadog (pence per litre)

Unleaded (E10)
153.7p
4 stations
±4.5p std dev
+0.6p vs national
Super Unleaded (E5)
169.9p
2 stations
±10.0p std dev
1.6p below national
Diesel (B7)
172.9p
4 stations
±3.5p std dev
+1.8p vs national
Premium Diesel
189.9p
1 stations
1.8p below national

30-Day Price Trend in the Llandudno Region (pence per litre)

Daily averages across all stations in the Llandudno postcode area over the last 30 days. Porthmadog sits within this region.

What does fuel cost a typical driver in Porthmadog?

At current prices, a typical driver covering 12000 miles a year in a petrol car averaging 35 mpg spends about £2395/year on fuel in Porthmadog (at 153.7p/L). That's £9 more than the UK average of £2386. Across the wider Llandudno (LL) postcode area petrol averages 154.4p/L, working out at £2407/year.

A diesel driver doing the same 12000 miles at 50 mpg spends about £1886/year at Porthmadog's average diesel price of 172.9p/L. That's £20 more than the UK average of £1867. Across the wider Llandudno (LL) postcode area diesel averages 171.8p/L — £1874/year.

Choose the right station — save £££

The cheapest petrol in Porthmadog is 149.9p/L and the most expensive is 160.9p/L — a 11.0p/L spread. Filling a 60‑litre tank at the cheapest vs the dearest saves £6.60.

For diesel the spread is 9.0p/L (169.9p cheapest, 178.9p dearest) — £5.40 saved on a 60‑litre fill.

Fuel Prices by Brand in Porthmadog

Average prices and cheapest station for each fuel brand in Porthmadog.

Essar Fuel Prices in Porthmadog

There is 1 Essar forecourt in Porthmadog. Petrol is 149.9p/L — 3.8p below the Porthmadog average. Diesel is 169.9p/L (3.0p below town avg). Live prices: Essar, Porthmadog.

Show station details
StationPostcodeE10B7
Essar, Porthmadog LL49 9NY 149.9p 169.9p

Glanaber Garage Fuel Prices in Porthmadog

There is 1 Glanaber Garage forecourt in Porthmadog. Petrol is 160.9p/L — 7.3p above the Porthmadog average. Diesel is 178.9p/L (6.0p above town avg). Live prices: Glanaber Garage, Porthmadog.

Show station details
StationPostcodeE10B7
Glanaber Garage, Porthmadog LL49 9TP 160.9p 178.9p

Shell Fuel Prices in Porthmadog

There is 1 Shell forecourt in Porthmadog. Petrol is 153.9p/L — 0.3p above the Porthmadog average. Diesel is 171.9p/L (1.0p below town avg). Live prices: Shell, Porthmadog. Shell fuel prices across the UK →

Show station details
StationPostcodeE10B7
Shell, Porthmadog LL49 9LU 153.9p 171.9p

Tesco Fuel Prices in Porthmadog

There is 1 Tesco forecourt in Porthmadog. Petrol is 149.9p/L — 3.8p below the Porthmadog average. Diesel is 170.9p/L (2.0p below town avg). Live prices: Tesco, Porthmadog. Tesco fuel prices across the UK →

Show station details
StationPostcodeE10B7
Tesco, Porthmadog LL49 9NU 149.9p 170.9p

Embed live prices on your website

Free · Always up-to-date · No registration needed. Local news site, community page, or just want to share live prices? Copy the code below.

Frequently Asked Questions

The cheapest unleaded petrol (E10) in Porthmadog today is 149.9p per litre at ESSAR, LL49 9NY. The average across 4 stations is 153.7p. Prices are sourced from the UK government's Fuel Finder service and updated every 30 minutes.

The cheapest diesel (B7) in Porthmadog today is 169.9p per litre at ESSAR, LL49 9NY. The average across 4 stations is 172.9p. Prices are sourced from the UK government's Fuel Finder service.

The average unleaded (E10) price in Porthmadog is 153.7p per litre from 4 stations. The national average is 153.1p, so Porthmadog is 0.6p above the national average.

The average diesel (B7) price in Porthmadog is 172.9p per litre from 4 stations. The national average is 171.1p, so Porthmadog is 1.8p above the national average.

There are currently 4 fuel stations reporting prices in Porthmadog. This includes supermarket forecourts, independent stations, and branded sites.

Fuel prices on MPG Calc are updated every 30 minutes using official data from the UK government's Fuel Finder service. All retailers with 250+ filling stations are required by law to report their prices, covering the vast majority of UK forecourts.