Fuel prices
Petrol and diesel prices in Monmouthshire
Average pump prices across 18 filling stations in Monmouthshire, from the prices every UK forecourt must now publish under the government’s Fuel Finder scheme. Checked 16 Sept, 16:47.
- Average unleaded petrol 173.8p 2.1p above the UK average
- Average diesel 196.3p 1.7p above the UK average
- Cheapest petrol 169.7p EG Chepstow
- Filling stations 18 4 at supermarkets
Unleaded petrol averages 173.8p a litre across 16 forecourts in Monmouthshire, 2.1p above the UK average. Diesel averages 196.3p, 1.7p above the UK average. The cheapest petrol is at EG Chepstow, 169.7p; the dearest is 182.9p. The cheapest diesel is there too, 187.7p.
Cheapest petrol and diesel in Monmouthshire
| Filling station | Price |
|---|---|
| EG Chepstow Chepstow | 169.7p |
 Tesco Chepstow Superstore Cas-Gwent | 169.9p |
| Skirrid Mountain Garage Abergavenny | 169.9p |
| BP Ascona Brecon Road Service Station Abergavenny | 171.9p |
 Esso MFG Chepstow Chepstow | 171.9p |
 Gulf Raglan Service Station Usk | 171.9p |
| Esso Rontec Magor Caldicot | 171.9p |
 Valero Tgc - Pwllmeyric Chepstow | 171.9p |
| BP Woodside Usk | 171.9p |
| Esso Rontec Abergavenny Abergavenny | 172.9p |
| Filling station | Price |
|---|---|
| EG Chepstow Chepstow | 187.7p |
| Tesco Chepstow Superstore Cas-Gwent | 192.9p |
| Nts Manor Garage Service Station Caldicot | 193.9p |
| BP Woodside Usk | 193.9p |
| Gulf Raglan Service Station Usk | 195.9p |
| Skirrid Mountain Garage Abergavenny | 195.9p |
| Gulf Caldecot Fuel Express Automat Newport | 196.7p |
| BP Ascona Brecon Road Service Station Abergavenny | 196.9p |
| Esso MFG Chepstow Chepstow | 196.9p |
| Valero Tgc - Pwllmeyric Chepstow | 196.9p |
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Supermarkets against other forecourts
Supermarket petrol is 3.3p a litre cheaper on average than at other forecourts in Monmouthshire.
| Forecourts | Petrol | Diesel | Stations |
|---|---|---|---|
| Supermarkets | 171.2p | 194.2p | 3 |
| Other forecourts | 174.5p | 196.7p | 12 |
Council areas in Wales, cheapest first
Monmouthshire is number 19 of 22 for petrol.
| Area | Petrol | Diesel |
|---|---|---|
| Pembrokeshire | 168.0p | 191.5p |
| Torfaen | 168.7p | 191.0p |
| Caerphilly | 168.8p | 191.7p |
| Ceredigion | 169.3p | 193.7p |
| Neath Port Talbot | 169.3p | 192.7p |
| Vale of Glamorgan | 169.4p | 193.9p |
| Carmarthenshire | 169.5p | 192.3p |
| Bridgend | 169.8p | 193.1p |
| Rhondda Cynon Taf | 170.1p | 193.2p |
| Isle of Anglesey | 170.2p | 194.7p |
| Blaenau Gwent | 170.2p | 191.4p |
| Powys | 170.9p | 194.9p |
| Wrexham | 171.3p | 193.0p |
| Cardiff | 171.3p | 194.3p |
| Gwynedd | 171.4p | 195.3p |
| Newport | 171.4p | 194.4p |
| Swansea | 172.6p | 195.1p |
| Merthyr Tydfil | 173.7p | 198.5p |
| Monmouthshire | 173.8p | 196.3p |
| Flintshire | 174.3p | 195.1p |
| Denbighshire | 174.6p | 195.4p |
| Conwy | 175.4p | 196.7p |
Every filling station in Monmouthshire
| Filling station | Petrol | Diesel |
|---|---|---|
| EG Chepstow Chepstow | 169.7p | 187.7p |
| Tesco Chepstow Superstore Cas-Gwent · supermarket | 169.9p | 192.9p |
| Skirrid Mountain Garage Abergavenny · supermarket | 169.9p | 195.9p |
| BP Ascona Brecon Road Service Station Abergavenny | 171.9p | 196.9p |
| Esso MFG Chepstow Chepstow | 171.9p | 196.9p |
| Gulf Raglan Service Station Usk | 171.9p | 195.9p |
| Esso Rontec Magor Caldicot · motorway | 171.9p | 197.9p |
| Valero Tgc - Pwllmeyric Chepstow | 171.9p | 196.9p |
| BP Woodside Usk | 171.9p | 193.9p |
| Esso Rontec Abergavenny Abergavenny | 172.9p | 197.9p |
| Shell Waitrose Abergavenny Abergavenny | 172.9p | 197.9p |
| Gulf Caldecot Fuel Express Automat Newport | 173.7p | 196.7p |
| Nts Manor Garage Service Station Caldicot · supermarket | 173.9p | 193.9p |
| Shell Overmonnow Monmouth | 179.9p | 199.9p |
| Esso Asda Monmouth North Express Petrol Monmouth | 182.9p | 199.9p |
| Esso Asda Monmouth South Express Petrol Monmouth | 182.9p | 199.9p |
| Gulf Gilwern Garage Y Fenni · supermarket | – | – |
| Meredith Motors Chepstow | – | – |
A dash means no current price: none reported, not changed for over two weeks, or not believable.
Data sources and methodology
| Figures | Source | Period | Records | Updated |
|---|---|---|---|---|
| Forecourt prices | Fuel Finder open data Fuel Finder statutory scheme ONS Postcode Directory Office for National Statistics | Prices at 16:47 on 16 September 2026 | 8,070 filling stations | 16 September 2026 |
- Averages use unleaded (E10) and standard diesel (B7) prices at open forecourts, leaving out prices unchanged for over two weeks or far from every other forecourt. They count each forecourt once, not by how much fuel it sells.
- Forecourts are placed in council areas from their postcode, using the ONS Postcode Directory.
Source: Fuel Finder, the UK government’s statutory fuel price scheme.
Source: Office for National Statistics licensed under the Open Government Licence v3.0. Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026.