Compare Asda petrol and diesel prices across forecourts in and around Monmouth, Gwent. Cheapest unleaded from 182.9p, diesel from 201.9p. Updated today, 23 October 2026.
| Forecourt | Unleaded | Diesel | Distance |
|---|---|---|---|
| ASDA MONMOUTH NORTH EXPRESS PETROL A40 NORTH BOUND |
182.9p | 201.9p | 3.8 mi |
| ASDA MONMOUTH SOUTH EXPRESS PETROL A40 SOUTH BOUND |
182.9p | 201.9p | 4.2 mi |