Live prices
Cheapest diesel (B7) in Watford
8 stations reporting diesel (B7), ranked cheapest first.
The cheapest reported diesel (B7) in Watford is £8.18 a gallon (179.9p per litre) at Costco, Hartspring Lane, Watford, Watford, Hertfordshire (WD25 8JS). The average across 8 forecourts currently reporting this grade is £8.51 a gallon (187.3p per litre), so choosing the cheapest rather than an average-priced forecourt saves about £3.70 on a 50-litre fill. That local average is 8.9p per litre below the UK average of 196.2p.
The average is unchanged since yesterday. The average has risen 3.2p per litre since last week.
Prices last refreshed at 1:32pm on 20 September 2026, supplied through the official UK Government fuel price open data scheme and checked every 30 minutes.
| Station | Unleaded | Diesel | Premium | Super diesel | Updated |
|---|---|---|---|---|---|
 Costco Wholesale Watford (WD25 8JS)Hartspring Lane, Watford, Watford, Hertfordshire | £7.22158.9p | £8.18179.9p | £7.68168.9p | ---- | 46 mins ago |
 Sainsburys Dome Roundabout (WD25 9JS)24hCow Lane, Watford | £7.41162.9p | £8.27181.9p | £7.95174.9p | ---- | 46 mins ago |
 Watford Extra - Petrol Filling Station (WD17 2BD)24h239-241 Lower High ST, Watford | £7.45163.9p | £8.31182.9p | £7.95174.9p | ---- | 46 mins ago |
 Asda Watford Supercentre (WD24 7RT)24hOdhams Industrial Estate, ST Albans Road, Watford | £7.44163.7p | £8.31182.7p | ---- | ---- | 46 mins ago |
 Shell Little Waitrose Sceptre (WD24 7RU)ST Albans Road, Watford, Hertfordshire | £7.50164.9p | £8.36183.9p | £8.41184.9p | £9.31204.9p | 46 mins ago |
 South Oxhey Esso Express (WD19 6EG)Prestwick RD, Watford | £7.63167.9p | £8.81193.9p | £8.31182.9p | £9.45207.9p | 46 mins ago |
| Rontec Watford (WD24 4AE)24hST Albans Road, Watford, Hertfordshire | £7.72169.9p | £8.81193.9p | £8.59188.9p | £9.68212.9p | 46 mins ago |
 Bp Harvest Energy Colne (WD18 0FS)24hWiggenhall Road, Watford, Buckinghamshire | £8.00175.9p | £9.04198.9p | £8.95196.9p | ---- | 46 mins ago |
Prices are supplied through the official UK Government fuel price open data scheme (Open Government Licence v3.0) and checked every 30 minutes. Only stations reporting diesel (B7) appear here.
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Questions about diesel (B7) in Watford
- Where is the cheapest diesel (B7) in Watford?
- The cheapest reported diesel (B7) in Watford is 179.9p per litre at Costco, Hartspring Lane, Watford, Watford, Hertfordshire (WD25 8JS). The average across 8 forecourts reporting this grade is 187.3p per litre. Prices were last refreshed at 1:32pm on 20 September 2026 from official UK Government fuel price data.
- How many stations in Watford sell diesel (B7)?
- 8 forecourts in Watford currently report a price for diesel (B7) through the official UK fuel price open data scheme. Stations that do not sell or report this grade are not counted.