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Petrol Prices in Porthmadog
Average today: unleaded 159.6p · diesel 182.6p ·
UK average 161.4p / 182.6p
Checked 23 August 2026 · retailer-reported prices, changes filed within 30 minutes
Porthmadog trend: Unleaded → steady · 7d · Diesel ▲ 2.4p · 7d
The cheapest unleaded in Porthmadog today is 156.9p
at Tesco, Tesco Stores Ltd. Filling a 55-litre tank at the cheapest station instead of the priciest saves about £2.75.
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