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Live prices · 34 forecourts

Petrol and diesel prices in Gwynedd

Prices at 34 forecourts in Gwynedd, as reported to the UK Government's Fuel Finder scheme. The cheapest unleaded today is 154.9p at H.g.Thomas motors limited; the cheapest diesel is 192.9p at Bryn Llwyd Services.

Updated 9 Nov 2026, 08:12Part of Wales
Open the live map hereAll UK areas

Cheapest in Gwynedd now

Live
  • Unleaded
  • Diesel
  • Super
  • Prem. diesel
Lowest price for each fuel among the forecourts below — each may be at a different forecourt.

Today's prices in Gwynedd

Averages of every forecourt here with a price reported in the last 30 days, compared with the UK.

Unleaded (E10)

168.0paverage

£7.64 a gallon

1.3p below UK average

Cheapest 154.9p at H.g.Thomas motors limitedreported 4 Nov 2026, 13:58

31 forecourts with a recent price

Diesel (B7)

198.0paverage

£9.00 a gallon

0.4p above UK average

Cheapest 192.9p at Bryn Llwyd Servicesreported 5 Nov 2026, 09:46

25 forecourts with a recent price

Super unleaded (E5)

182.7paverage

£8.31 a gallon

4.6p below UK average

Cheapest 169.9p at Spar Express Dolgellaureported 3 Nov 2026, 10:39

14 forecourts with a recent price

Super diesel (B7)

211.6paverage

£9.62 a gallon

4.5p below UK average

Cheapest 204.9p at Bryn Llwyd Servicesreported 5 Nov 2026, 09:46

3 forecourts with a recent price

Every forecourt in Gwynedd, cheapest first

Sort by any fuel. Each price shows when the forecourt reported it.

  • H.g.Thomas motors limited

    Texaco · LL210HA · Dyffryn garage

    Unleaded
    154.9p4 Nov 2026, 13:58
    Diesel
    —
    Super
    —
    Prem. diesel
    —
  • Cambrian Garage

    Cambrian Garage · LL41 4SP · J M Hughes A I Feibion Cyf, Cambrian Garage, Trawsfynydd, Blaenau Ffestiniog, Ll41 4sp

    Unleaded
    155.0p5 Nov 2026, 17:00
    Diesel
    198.0p5 Nov 2026, 17:00
    Super
    —
    Prem. diesel
    —
  • A.D.Jones & Co

    Essar · LL23 7UD · Plas Moduron

    Unleaded
    156.9p7 Nov 2026, 07:20
    Diesel
    194.9p7 Nov 2026, 07:20
    Super
    —
    Prem. diesel
    —
  • Madog Garage / Hamdden Caravans Ltd

    Essar · LL49 9NY · Penamser Garage

    Unleaded
    162.9p7 Nov 2026, 14:08
    Diesel
    196.9p28 Oct 2026, 09:17
    Super
    —
    Prem. diesel
    —
  • Bryn Llwyd Services

    Texaco · LL57 4SU · Texaco Service Station

    Unleaded
    164.9p8 Nov 2026, 08:04
    Diesel
    192.9p5 Nov 2026, 09:46
    Super
    176.9p8 Nov 2026, 08:04
    Prem. diesel
    204.9p5 Nov 2026, 09:46

    AdBlue pumpsLPG

  • Clynnog Service Station

    Murco · LL54 5PF · Clynnog-fawr

    Unleaded
    165.9p6 Nov 2026, 11:38
    Diesel
    195.9p23 Oct 2026, 19:28
    Super
    185.9p6 Nov 2026, 11:38
    Prem. diesel
    —
  • Cwt Gwyn Cyf

    Esso · LL40 2AB · Cwt Gwyn Cyf

    Unleaded
    165.9p7 Nov 2026, 11:03
    Diesel
    196.9p7 Nov 2026, 11:03
    Super
    175.9p7 Nov 2026, 11:03
    Prem. diesel
    —
  • Prysor Service Station LTD

    Essar · LL41 4TW · Prysor Service Station

    Unleaded
    165.9p4 Nov 2026, 10:16
    Diesel
    196.9p4 Nov 2026, 10:16
    Super
    175.9p4 Nov 2026, 10:16
    Prem. diesel
    —

    LPG

  • Parciau Filling Station

    Spar · LL52 0RN · Parciau Filling Station

    Unleaded
    166.9p4 Nov 2026, 15:21
    Diesel
    195.9p30 Oct 2026, 08:22
    Super
    181.9p4 Nov 2026, 15:21
    Prem. diesel
    210.9p30 Oct 2026, 08:22
  • Asda Bangor Farrar Road Supermarket

    Asda · LL57 1LJ · Farrar Road

    Unleaded
    167.7p7 Nov 2026, 17:54
    Diesel
    197.7p7 Nov 2026, 17:54
    Super
    —
    Prem. diesel
    —
  • MFG Morrisons Caernarfon

    Morrisons · LL55 1BE · Ffordd Y Gogledd (north Road)

    Unleaded
    167.7p8 Nov 2026, 22:31
    Diesel
    196.7p16 Oct 2026, 22:28
    Super
    185.9p5 Nov 2026, 22:34
    Prem. diesel
    —
  • Allan Green

    Esso · LL48 6LS · Allan Green, Park Road Garage, Penrhyndeudraeth, Ll48 6ls

    Unleaded
    167.9p2 Nov 2026, 10:36
    Diesel
    201.9p2 Nov 2026, 10:36
    Super
    —
    Prem. diesel
    —
  • Barmouth Road Service Station

    Texaco · LL44 2EN · Barmouth Road Service Station

    Unleaded
    167.9p6 Nov 2026, 13:09
    Diesel
    —
    Super
    —
    Prem. diesel
    —
  • MFG Porthmadog

    Shell · LL49 9LU · High Street

    Unleaded
    167.9p2 Nov 2026, 22:45
    Diesel
    199.9p29 Oct 2026, 22:33
    Super
    195.9p5 Nov 2026, 22:45
    Prem. diesel
    —
  • Porthmadog Superstore - Petrol Filling Station

    Tesco · LL49 9NU · Tesco Stores Ltd

    Unleaded
    167.9p3 Nov 2026, 17:08
    Diesel
    196.9p28 Oct 2026, 17:40
    Super
    178.9p3 Nov 2026, 17:08
    Prem. diesel
    —

    24 hours

  • Caer Service Station

    Texaco · LL55 2HP · Caer Service Station, South Road, Caernarfon, Ll55 2hp

    Unleaded
    168.7p8 Nov 2026, 10:15
    Diesel
    196.7p7 Nov 2026, 10:13
    Super
    —
    Prem. diesel
    —
  • Llanbedrog Service Station

    Essar · LL53 7TN · Llanbedrog Service Station

    Unleaded
    168.9p6 Nov 2026, 17:18
    Diesel
    198.9p12 Oct 2026, 13:50
    Super
    —
    Prem. diesel
    —
  • Siop Pitstop

    Valero · LL536AP · Siop Pitstop

    Unleaded
    168.9p6 Nov 2026, 14:10
    Diesel
    198.9p12 Oct 2026, 14:39
    Super
    —
    Prem. diesel
    —
  • dolydd

    Texaco · LL54 7EF · Modurdy Dolydd Garage, Dolydd, Caernarfon, Ll54 7ef

    Unleaded
    169.9p13 Oct 2026, 08:31
    Diesel
    195.9p16 Oct 2026, 10:28
    Super
    185.9p13 Oct 2026, 08:31
    Prem. diesel
    —
  • Garth Services

    BP · LL57 1AB · Garth Services

    Unleaded
    169.9p6 Nov 2026, 15:02
    Diesel
    —
    Super
    —
    Prem. diesel
    —

    24 hours

  • Glandon Spar Express

    BP · LL53 5LF · Glandon Spar Express

    Unleaded
    169.9p3 Nov 2026, 10:39
    Diesel
    —
    Super
    —
    Prem. diesel
    —
  • Gwalia Garage Caernarfon Limited

    Shell · LL55 2SS · Gwalia Garage Ltd

    Unleaded
    169.9p7 Nov 2026, 09:21
    Diesel
    196.9p22 Oct 2026, 10:08
    Super
    181.9p7 Nov 2026, 09:21
    Prem. diesel
    —

    AdBlue pumps

  • London garage service station

    Essar · LL55 4DE · London Garage Ltd, Cwm-y-glo, Caernarfon, Ll55 4de

    Unleaded
    169.9p20 Oct 2026, 10:13
    Diesel
    198.9p20 Oct 2026, 10:13
    Super
    —
    Prem. diesel
    —

    AdBlue pumps

  • Pulrose Motor Services Ltd

    Esso · LL53 5TA · Pulrose Motor Services Ltd

    Unleaded
    169.9p31 Oct 2026, 09:11
    Diesel
    —
    Super
    189.9p31 Oct 2026, 09:11
    Prem. diesel
    —
  • Asda Bangor Express Petrol

    Esso · LL57 4BG · Junction A5/55 Expressway

    Unleaded
    171.9p5 Nov 2026, 16:35
    Diesel
    199.9p15 Oct 2026, 16:35
    Super
    190.9p5 Nov 2026, 16:35
    Prem. diesel
    218.9p15 Oct 2026, 16:35

    24 hoursAdBlue pumps

  • Bangor Extra - Petrol Filling Station

    Tesco · LL57 4SU · Caernarfon Road

    Unleaded
    171.9p4 Nov 2026, 14:12
    Diesel
    —
    Super
    181.9p4 Nov 2026, 14:12
    Prem. diesel
    —

    24 hours

  • BR Tywyn

    Spar · LL36 9AD · Spar Stores

    Unleaded
    172.9p23 Oct 2026, 10:46
    Diesel
    —
    Super
    —
    Prem. diesel
    —
  • Glanaber Garage

    Glanaber Garage · LL49 9TP · Glanaber Garage

    Unleaded
    172.9p29 Oct 2026, 08:39
    Diesel
    201.9p29 Oct 2026, 08:39
    Super
    —
    Prem. diesel
    —
  • Moduron Y Bala Ltd

    Moduron Y Bala · LL23 7AE · Moduron Y Bala Ltd

    Unleaded
    172.9p30 Oct 2026, 22:49
    Diesel
    —
    Super
    —
    Prem. diesel
    —
  • Garej Ni

    Dragon · LL53 8DU · Garej Ni

    Unleaded
    175.9p20 Oct 2026, 15:29
    Diesel
    199.9p20 Oct 2026, 15:29
    Super
    —
    Prem. diesel
    —
  • Morfa Garage

    Essar · LL46 2UW · Morfa Garage, Harlech, Ll46 2uw

    Unleaded
    176.9p23 Oct 2026, 11:24
    Diesel
    203.9p23 Oct 2026, 11:24
    Super
    —
    Prem. diesel
    —
  • Beran Filling Station

    Texaco · LL55 3NF · Beran Garage

    Unleaded
    —
    Diesel
    —
    Super
    —
    Prem. diesel
    —

    24 hoursAdBlue pumps

  • Bradburys Garage

    Bradburys Garage · LL42 1PH · Bradburys Garage, Ffordd Y Parc, Abermo, Ll42 1ph

    Unleaded
    —
    Diesel
    —
    Super
    —
    Prem. diesel
    —
  • Mallwyd Service Station

    Mallwyd Service Station · SY20 9HN · Mallwyd Service Station

    Unleaded
    —
    Diesel
    197.9p12 Oct 2026, 06:56
    Super
    —
    Prem. diesel
    —
  • O H Griffith & CO

    Esso · LL53 6UE · O H Griffith & CO

    Unleaded
    —
    Diesel
    —
    Super
    —
    Prem. diesel
    —
  • Spar Express Dolgellau

    Texaco · LL40 2YF · Spar Stores

    Unleaded
    —
    Diesel
    —
    Super
    169.9p3 Nov 2026, 10:39
    Prem. diesel
    —
  • W & G Williams

    W & G Williams · LL53 7DR · W & G Williams

    Unleaded
    —
    Diesel
    199.9p3 Nov 2026, 13:05
    Super
    —
    Prem. diesel
    —

What the prices say in Gwynedd

  • Unleaded in Gwynedd runs from 154.9p to 176.9p — 22.0p apart, or £12.10 on a 55-litre tank.

  • The average unleaded price here is 1.3p below the UK average, and diesel is 0.4p above.

  • The 4 supermarket forecourts average 168.8p for unleaded — 0.9p more than the 27 other forecourts.

  • In the last 7 days 24 forecourts here changed an unleaded or diesel price 48 times: 47 cuts and 1 rises.

  • 4 forecourts sell fuel 24 hours a day. 24-hour petrol stations near you

  • 4 forecourts have AdBlue at the pump, and 2 have LPG pumps. AdBlue pumps near you · LPG near you

Gwynedd against the UK, day by day

Daily averages from the same forecourts and the same freshness rules as the table.

Unleaded

167p168p169p170p171p172p173p174p175p176p22 Sept16 Oct9 Nov169.3p UK168.0p Gwynedd
GwyneddUK
Average unleaded price in Gwynedd and across the UK
DayGwyneddUK
27 Oct173.4p172.8p
28 Oct172.7p172.6p
29 Oct172.2p172.3p
30 Oct171.8p171.9p
31 Oct171.8p171.8p
1 Nov171.8p171.7p
2 Nov171.3p171.4p
3 Nov171.2p171.0p
4 Nov170.3p170.7p
5 Nov169.6p170.2p
6 Nov169.2p169.7p
7 Nov168.1p169.5p
8 Nov168.0p169.4p
9 Nov168.0p169.3p

Diesel

198p199p200p201p22 Sept16 Oct9 Nov198.0p Gwynedd197.7p UK
GwyneddUK
Average diesel price in Gwynedd and across the UK
DayGwyneddUK
27 Oct199.0p198.7p
28 Oct198.6p198.6p
29 Oct199.2p198.6p
30 Oct198.6p198.4p
31 Oct198.6p198.4p
1 Nov198.6p198.4p
2 Nov198.7p198.4p
3 Nov198.7p198.3p
4 Nov198.6p198.2p
5 Nov198.3p198.0p
6 Nov198.3p197.9p
7 Nov198.0p197.8p
8 Nov198.0p197.7p
9 Nov198.0p197.7p

Across Wales as a whole, unleaded averages 168.8p and diesel 197.6p.

Brands in Gwynedd

Average unleaded price by brand, against the UK average.

Average unleaded price by brand in Gwynedd
  • Texaco5 forecourts165.3p
  • Essar6 forecourts166.9p
  • Shell2 forecourts168.9p
  • Esso4 forecourts168.9p
  • Tesco2 forecourts169.9p
  • BP2 forecourts169.9p
  • Spar2 forecourts169.9p

UK average unleaded: 169.3pScale 164p – 171p

Near Gwynedd

Questions about fuel in Gwynedd

Where is the cheapest petrol in Gwynedd today?

H.g.Thomas motors limited (Dyffryn garage, LL210HA) at 154.9p a litre, reported 4 Nov 2026, 13:58. Next is Cambrian Garage at 155.0p. Prices can change before you arrive.

Where is the cheapest diesel in Gwynedd today?

Bryn Llwyd Services (Texaco Service Station, LL57 4SU) at 192.9p a litre, reported 5 Nov 2026, 09:46. Next is A.D.Jones & Co at 194.9p. Prices can change before you arrive.

What is the average price of petrol in Gwynedd?

Unleaded (E10) averages 168.0p a litre across 31 forecourts, against 169.3p for the UK as a whole. Diesel averages 198.0p. The averages use only prices reported in the last 30 days.

Which forecourts in Gwynedd are open 24 hours?

Bangor Extra - Petrol Filling Station, Garth Services, Asda Bangor Express Petrol and Porthmadog Superstore - Petrol Filling Station list 24-hour fuel. Hours come from the retailers themselves; the station pages show each day's times.

Where can I get AdBlue at the pump in Gwynedd?

London garage service station, Bryn Llwyd Services, Asda Bangor Express Petrol and Gwalia Garage Caernarfon Limited report AdBlue pumps to the government's Fuel Finder scheme. Find the nearest AdBlue pump from anywhere in the UK.

Where can I buy LPG in Gwynedd?

Bryn Llwyd Services and Prysor Service Station LTD report LPG pumps. The government scheme doesn't publish LPG prices. Every LPG station in the UK.

How often do fuel prices change in Gwynedd?

Over the last week, 24 forecourts changed an unleaded or diesel price, 48 times in all (47 cuts, 1 rises). Retailers must report each change to the Fuel Finder scheme within 30 minutes, and FuelWise picks it up at its next read of the feed.

Get told when fuel in Gwynedd gets cheaper

Price-drop alerts, your saved stations and CarPlay are coming in the FuelWise iPhone app, which is in final testing. Prices here stay free on the web.

Coming soon

Prices are reported by the forecourts themselves to the UK Government's Fuel Finder scheme, which requires every change to be published within 30 minutes. FuelWise reads the feed every 15 minutes and last updated these figures on 9 Nov 2026, 08:12. Each price shows when it was reported; prices older than 30 days and stations that have stopped reporting are left out.

How we calculate averages · Contains public sector information licensed under the Open Government Licence v3.0.