In November fuel prices shot up across the UK as wholesale oil prices also increased.
Although wholesale prices have since gone down costs to fill up our cars have not fallen back to previous levels.
According to the RAC the average price of petrol in the UK fell by just 2p a litre in December, meaning drivers paid £156m more than they should have.
At the moment the latest UK average unleaded petrol prices stood at 145.61p per litre and super unleaded was 157.95p per litre. The latest average diesel price was 148.88p per litre and LPG was 75.61p per litre.
UK supermarket giants such as Asda, Tesco, Sainsbury's and Morrisons are currently competing for the cheapest deals on the forecourt.
We checked the cheapest and most expensive stations in each Welsh county, according to PetrolPrices.
Anglesey
Holyhead
- Unleaded:
Cheapest: 145.9p - Morrisons, Penrhos Industrial Estate, LL65 2UQ
Most Expensive: 147.9p - Essar, London Road, LL65 3DR
- Diesel:
Cheapest: 149.9p - Morrisons, Penrhos Industrial Estate, LL65 2UQ
Most Expensive: 150.9p - Jet, London Road, LL65 3DP
Llangefni
- Unleaded:
Cheapest: 141.9p - Gulf Gaerwen, Cross Roads, LL60 6BL
Most Expensive: 143.9p - Texaco, Glanhwfa Road, LL77 7EY
- Diesel
Cheapest: 146.7p - Asda, Ffordd Cae Sel, LL77 7DW
Most Expensive: 147.9p - Texaco, Pentraeth, LL75 8AZ
Gwynedd
Bangor
- Unleaded:
Cheapest: 142.7p - Asda, Farrar Road, LL57 1LJ
Most Expensive: 151.9p - Esso, Bangor Services (A5), LL57 4BO
- Diesel:
Cheapest: 146.7p - Asda, Farrar Road, LL57 1LJ
Most Expensive: 153.9p - Esso, Bangor Services (A5), LL57 4BO
Caernarfon
- Unleaded:
Cheapest: 145.9p - Morrisons, North Road, LL55 1BE
Most Expensive: 146.9p - Texaco, South Road, LL55 2HP
- Diesel:
Cheapest: 147.9p - Morrisons, North Road, LL55 1BE
Most Expensive: X
Porthmadog
- Unleaded:
Cheapest: 138.9p - Essar, Penamser Road, LL49 9NY and Tesco, High Street, LL49 9NU
Most Expensive: 142.9p - Esso (Penrhyndeudraeth), Park Road, LL48 6LS
- Diesel:
Cheapest: 143.9p - Tesco, High Street, LL49 9NU
Most Expensive: 149.9p - Esso (Penrhyndeudraeth), Park Road, LL48 6LS
Conwy
Llandudno
- Unleaded:
Cheapest: 141.7p - Asda (Llandudno), Tudor Crescent, LL30 1BU
Most Expensive: 148.9p - Jet (Llandudno), Mostyn Broadway, LL30 1YR
- Diesel:
Cheapest: 145.7p - Asda (Llandudno), Tudor Crescent, LL30 1BU
Most Expensive: 150.9p - Jet (Llandudno), Mostyn Broadway, LL30 1YR
Colwyn Bay
- Unleaded:
Cheapest: 144.7p - Gulf (Llandudno), Glan y Mor Road, LL30 3NL
Most Expensive: 147.9p - Shell, A55 / A470 Interchange, LL28 5LE
- Diesel:
Cheapest: 145.9p - Tesco (Llandudno Junction), G Road, LL31 9XY
Most Expensive: 150.9p - Co-op (Old Colwyn), Abergele Road, LL29 9YG
Denbighshire
Rhyl
- Unleaded:
Cheapest: 143.7p - Asda (Kinmel Bay), St Asaph Avenue, LL18 5EQ
Most Expensive: 154.9p - Esso (Kinmel Bay), A55 Expressway Westbound, LL18 5SR
- Diesel:
Cheapest: 145.7p - Asda (Kinmel Bay), St Asaph Avenue, LL18 5EQ
Most Expensive: 158.9p - Esso (Kinmel Bay) A55 Expressway Westbound, LL18 5SR
Prestatyn
- Unleaded:
Cheapest: 143.7p - Asda (Kinmel Bay), St Asaph Avenue, LL18 5EQ
Most Expensive: 154.9p - BP, Marine Road, LL19 7HA
- Diesel:
Cheapest: 145.7p - Asda (Kinmel Bay), St Asaph Avenue, LL18 5EQ
Most Expensive: 152.9p - Shell (Rhyl), Vale Road, LL18 2PH
Flintshire
Flint
- Unleaded:
Cheapest: 144.9p - Shell, Holywell Road, CH6 5RR
Most Expensive: 148.9p - Shell (Northop), A55 Expressway Westbound, CH7 6HB
- Diesel:
Cheapest: 148.9p - Gulf (Holywell), Halkyn Road, CH8 7SJ
Most Expensive: 152.9p - Shell (Northop), A55 Expressway Westbound, CH7 6HB
Holywell
- Unleaded:
Cheapest: 143.9p - Texaco, Holway Road, CH8 7LQ
Most Expensive: 151.9p - BP, St Asaph Road, CH8 8RD
- Diesel:
Cheapest: 148.9p - Gulf (Holywell), Halkyn Road, CH8 7SJ
Most Expensive: 154.9p -BP, St Asaph Road, CH8 8RD
Mold
- Unleaded:
Cheapest: 142.9p - Tesco, Ponterwyl, CH7 1UB
Most Expensive:148.9p - Shell (Northop), A55 Expressway Westbound, CH7 6HB
- Diesel:
Cheapest: 148.9p - Tesco, Ponterwyl, CH7 1UB
Most Expensive: 154.9p -Texaco (Deeside), Chester Road, CH5 3LZ
Wrexham
Wrexham
- Unleaded:
Cheapest: 139.9p - Sainsbury's, Plas Coch Road, LL11 2BA
Most Expensive: 147.9p - Shell, Holt Road, LL13 9SB
- Diesel:
Cheapest: 143.7p - Asda, Holt Road, LL13 8HL
Most Expensive: 148.9p - BP, Wrexham Road, LL14 1PA
Overton
- Unleaded:
Cheapest: 139.9p - Texaco (Ellesmere), Church Street, SY12 0HF
Most Expensive: 142.9p - Texaco, Overton Road, SY11 3AY
- Diesel:
Cheapest: 148.9p - Texaco (Ellesmere), Church Street, SY12 0HF
Most Expensive: 149.9p - Texaco, St Martin's Road, SY11 3ER
Ruabon
- Unleaded:
Cheapest: 139.9p - Sainsbury's, Plas Coch Road, LL11 2BA
Most Expensive: 146.9p - Esso, Wrexham Road, LL14 4EJ
- Diesel:
Cheapest: 143.7p - Asda, Holt Road, LL13 8HL
Most Expensive: 146.9p - Esso, Wrexham Road, LL14 4EJ
Powys
Llandrindod Wells
- Unleaded:
Cheapest: 145.9p - Tesco, Waterloo Road, LD1 6BG
Most Expensive: 146.9p - Esso, A470, LD1 6NN
- Diesel:
Cheapest: 149.9p - Tesco, Waterloo Road, LD1 6BG
Most Expensive: 152.9p - Esso, A470, LD1 6NN
Builth Wells
- Unleaded:
Cheapest: 143.9p - Co-op, Station Road, LD2 3SS and Texaco, Station Road, LD2 3SS
- Diesel:
Cheapest: 148.9p - Co-op, Station Road, LD2 3SS
Most Expensive: 148.9p - Texaco, Station Road, LD2 3SS
Brecon
- Unleaded:
Cheapest: 143.9p - Gulf, Church Street, LD3 8BY
Most Expensive: 147.9p - Morrisons, Free Street, LD3 7SE
- Diesel:
Cheapest: 148.9p - Gulf, Church Street, LD3 8BY
Most Expensive: 149.9p - Morrisons, Free Street, LD3 7SE
Ceredigion
Aberystwyth
- Unleaded:
Cheapest: 147.9p -Texaco (Pwllhobi), Llanbadarn Fawr, SY23 3SL; Texaco, Mill Street, SY23 1HZ; Morrisons, Parcydolau, SY23 3TL
- Diesel:
Cheapest: 148.9p - Texaco (Pwllhobi), Llanbadarn Fawr, SY23 3SL; Texaco, Mill Street, SY23 1HZ; Morrisons, Parcydolau, SY23 3TL; BP, Penrhyn-coch Road, SY23 3EH
Cardigan
- Unleaded:
Cheapest: 135.9p - Tesco, Aberystwyth Road, SA43 1NA
- Diesel:
Cheapest: 142.9p - Tesco, Aberystwyth Road, SA43 1NA; Gulf, Llechryd Service Station (A487 and A484), SA43 2NR; Murco, Penparc Motors (A487), SA43 1SB
Pembrokeshire
Pembroke
- Unleaded:
Cheapest: 140.7p - Asda (Pembroke Dock), Gordon Street, SA72 6DA
Most Expensive: 145.9p - Texaco (Milford Haven), Haven Bridge Road, SA73 1QZ
- Diesel:
Cheapest: 143.7p - Asda (Pembroke Dock), Gordon Street, SA72 6DA
Most Expensive: 147.9p - Murco, Lamphey Service Station (A4139), SA71 5NW
Haverfordwest
- Unleaded:
Cheapest: 145.8p - Texaco, St Davids Road, SA62 6QN
Most Expensive: 147.9p - Texaco, Fishguard Road, SA65 9AT
- Diesel:
Cheapest: 147.9p - Tesco, Fenton Trading Estate, SA62 1BU
Most Expensive: 149.9p - Morrisons, Bridge Meadow Lane, SA61 2EX
Carmarthenshire
Carmarthen
- Unleaded:
Cheapest: 144.9p - Tesco, Morfa Lane, SA31 3AX
Most Expensive: 146.9p - Texaco, Llysonnen Road, SA33 5DT
- Diesel:
Cheapest: 145.9p - Murco, Derwydd Garage (A484), SA33 6TP
Most Expensive: 149.9p - Esso, White Mill Service Station, SA32 7EN
Llanelli
- Unleaded:
Cheapest: 139.7p - Asda (Gorseinon), Heol Y Mynydd, SA4 4BZ
Most Expensive: 146.9p - Shell, Dafen Service Station, SA14 8LY
- Diesel:
Cheapest: 142.7p - Asda (Gorseinon), Heol Y Mynydd, SA4 4BZ
Most Expensive: 149.9p - Shell, Dafen Service Station, SA14 8LY
Swansea
- Unleaded:
Cheapest: 139.7p - Asda, Upper Fforest Way, SA6 8PS
Most Expensive: 144.9p - Shell (Neath), Fabian Way, SA10 6JW
- Diesel:
Cheapest: 142.7p - Asda, Upper Fforest Way, SA6 8PS
Most Expensive: 144.7p - Morrisons, Pentre-chwyth, SA1 7DF
Neath Port-Talbot
- Unleaded:
Cheapest: 137.9p - Texaco, Swansea Road, SA8 4BN
Most Expensive: 145.9p - Tesco, Neath Abbey Road, SA10 7FE and Texaco, MFG Sgiwen (A465), SA10 6RY
- Diesel:
Cheapest: 142.7p - Asda, Upper Fforest Way, SA6 8PS
Most Expensive: 147.9p -Tesco, Neath Abbey Road, SA10 7FE
Bridgend
- Unleaded:
Cheapest: 137.9p - Murco, Maesteg Road, CF32 9BT
Most Expensive: 147.9p - Texaco, Crossroads Service Station (A473), CF35 5HY
- Diesel:
Cheapest: 138.9p - Sainsbury's, Derwen, CF32 9ST
Most Expensive: 147.9p -Texaco, Coychurch Road, CF35 5NH
Vale of Glamorgan
- Unleaded:
Cheapest: 141.9p - Tesco, Culverhouse Cross, CF5 6XQ
Most Expensive: 147.9p - Texaco, Dinas Powys, CF64 4JX
- Diesel:
Cheapest: 144.9p - Tesco, Culverhouse Cross, CF5 6XQ
Most Expensive: 149.9p - Texaco, Port Road, CF62 9PZ
Cardiff
- Unleaded:
Cheapest: 140.7p - Asda, Coryton Roundabout, CF14 7EW
Most Expensive: 144.9p - Esso, Newport Road, CF24 1AG
- Diesel:
Cheapest: 144.9p - Asda, Leckwith, CF11 8AZ
Most Expensive: 149.9p - Esso, Newport Road, CF24 1AG
Rhondda Cynon Taf
- Unleaded:
Cheapest: 141.7p - Gulf (Aberdare), New Cardiff Road, CF44 0AG
Most Expensive: 145.9p - Murco (Ferndale), Morris Terrace, CF43 4ST
- Diesel:
Cheapest: 145.7p - Asda (Aberdare), Riverside Retail Park, CF44 0AH
Most Expensive: 147.9p - Texaco (Aberdare), Cardiff Road, CF44 0PN and Texaco (Porth), North Road, CF39 9SH
Merthyr Tydfil
- Unleaded:
Cheapest: 141.7p - Asda (Aberdare), Riverside Retail Park, CF44 0AH
Most Expensive: 147.9p - Texaco, Valley Heights Service Station, CF48 2YE
- Diesel:
Cheapest: 145.7p - Asda (Aberdare), Riverside Retail Park, CF44 0AH
Most Expensive: 149.9p - Texaco, Valley Heights Service Station, CF48 2YE
Caerphilly
- Unleaded:
Cheapest: 140.7p - Asda, Coryton Roundabout, CF14 7EW
Most Expensive: 144.8p - Texaco, Bryn Road, NP12 2HA
- Diesel:
Cheapest: 144.9p - Tesco (Pontypridd), Gelli Hirion Industrial Estate Road, CF37 5SN
Most Expensive: 146.9p - Sainsbury's (Thornhill), District Shopping Centre, CF14 9BB
Blaenau Gwent
- Unleaded:
Cheapest: 137.9p - Murco (Brynmawr), King Street, NP23 4JD
Most Expensive: 147.9p - Texaco (Tredegar), Nantybwch, NP22 3SP
- Diesel:
Cheapest: 145.9p - Murco (Brynmawr), King Street, NP23 4JD
Most Expensive: 149.9p - Texaco (Tredegar), Nantybwch, NP22 3SP
Torfaen
- Unleaded:
Cheapest: 140.9p - Tesco (Pontypool), Lower Bridge Street, NP4 6JU
Most Expensive: 146.9p - Shell (Cwmbran), Henllys Way, NP44 3JA
- Diesel:
Cheapest: 145.7p - Asda (Pillgwenlly), Lower Dock Street, NP20 2BH
Most Expensive: 149.9p - Jet (Newport), Ponthir Road, NP18 3NY
Newport
- Unleaded:
Cheapest: 142.0p - Sainsbury's (Cwmbran), Llywelyn Road, NP44 1UL
Most Expensive: 145.9p - Jet (Newport), Ponthir Road, NP18 3NY
- Diesel:
Cheapest: 145.7p - Asda (Pillgwenlly), Lower Dock Street, NP20 2BH
Most Expensive: 149.9p - Jet (Newport), Ponthir Road, NP18 3NY
Monmouthshire
- Unleaded:
Cheapest: 144.8p - Applegreen (Ross-on-Wye), A40, HR9 6DW
Most Expensive: 146.9p - Esso (Monmouth), A40, NP25 4BG
- Diesel:
Cheapest: 148.8p - Applegreen (Ross-on-Wye), A40, HR9 6DW
Most Expensive: 152.9p - Esso (Monmouth), A40, NP25 4BG
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