Live prices
Cheapest petrol and diesel prices in Watford
8 forecourts tracked in Watford (8 reporting unleaded (E10), 8 reporting diesel (B7), 7 reporting premium (E5), 3 reporting super diesel). Prices last refreshed at 1:32pm on 20 September 2026.
The cheapest reported unleaded petrol (E10) in Watford is £7.22 a gallon (158.9p per litre) at Costco, Hartspring Lane, Watford, Watford, Hertfordshire. The average across 8 forecourts currently reporting this grade is £7.55 a gallon (166.0p per litre), so choosing the cheapest rather than an average-priced forecourt saves about £3.55 on a 50-litre fill. That local average is 6.5p per litre below the UK average of 172.5p.
The average has risen 0.1p per litre since yesterday. The average has risen 2.0p 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.
At 158.9p per litre, the cheapest unleaded in Watford is the highest we have recorded here in 4 weeks. The Watford average has risen 2.0p a litre over the past week.
Unleaded Prices
Unleaded (E10)
- Highest
- £7.72/gal169.9p/L
- Average
- £7.55/gal166.0p/L
- Lowest
- £7.41/gal162.9p/L
Diesel Prices
Diesel (B7)
- Highest
- £8.81/gal193.9p/L
- Average
- £8.51/gal187.3p/L
- Lowest
- £8.18/gal179.9p/L
Premium Unleaded Prices
Premium Unleaded (E5)
- Highest
- £8.41/gal184.9p/L
- Average
- £8.26/gal181.8p/L
- Lowest
- £7.95/gal174.9p/L
Super Diesel Prices
Super Diesel (SDV)
- Highest
- £9.68/gal212.9p/L
- Average
- £9.48/gal208.6p/L
- Lowest
- £9.31/gal204.9p/L
All forecourts in Watford
8 forecourts in Watford, with live prices and full addresses. Showing 1 to 8.
Hartspring Lane, Watford, Watford, Hertfordshire · WD25 8JS
Usually cheapest midnight to 5am, priciest 4pm to 9pm here
DirectionsDiesel B7
Premium E5
Cow Lane, Watford · WD25 9JS
Usually cheapest 3am to 8am, priciest 11pm to midnight here
DirectionsDiesel B7
Premium E5
Odhams Industrial Estate, ST Albans Road, Watford · WD24 7RT
Usually cheapest midnight to 5am, priciest 7pm to midnight here
DirectionsDiesel B7
239-241 Lower High ST, Watford · WD17 2BD
Usually cheapest midnight to 5am, priciest 6pm to 11pm here
DirectionsDiesel B7
Premium E5
Diesel B7
Premium E5
Super Diesel
Prestwick RD, Watford · WD19 6EG
Usually cheapest midnight to 5am, priciest 4pm to 9pm here
DirectionsDiesel B7
Premium E5
Super Diesel
ST Albans Road, Watford, Hertfordshire · WD24 4AE
Usually cheapest midnight to 5am, priciest 2pm to 7pm here
DirectionsDiesel B7
Premium E5
Super Diesel
Wiggenhall Road, Watford, Buckinghamshire · WD18 0FS
Usually cheapest midnight to 5am, priciest 5pm to 10pm here
DirectionsDiesel B7
Premium E5
Search near Watford
Ask the fuel analyst
Answers come straight from recorded official price data, refreshed every 30 minutes.
Cheapest reported unleaded
Costco
Hartspring Lane, Watford, Watford, Hertfordshire
158.9p/L
Cheapest reported diesel
Costco
Hartspring Lane, Watford, Watford, Hertfordshire
179.9p/L
By fuel grade in Watford
Nearby areas
Save more as a driver
Prices are sourced from official UK government fuel-price data (Open Government Licence v3.0). Updated every 30 minutes.
Questions about fuel prices in Watford
- What is the average petrol price in Watford?
- The average unleaded (E10) petrol price in Watford is currently 166.0p per litre (approx. £7.55/gal), based on live data from 8 forecourts reporting this grade. Prices are updated every 30 minutes from official UK government data.
- What is the average diesel price in Watford?
- The average diesel (B7) price in Watford is currently 187.3p per litre (approx. £8.51/gal). This is based on live data from forecourts in the area, updated every 30 minutes.
- Which is the cheapest petrol station in Watford?
- Costco at Hartspring Lane, Watford, Watford, Hertfordshire currently has the cheapest reported unleaded petrol in Watford at 158.9p per litre (approx. £7.22/gal). Prices change regularly, so check this page for the latest.
- Which is the most expensive petrol station in Watford?
- According to official UK government fuel price data, Bp Harvest Energy Colne (WD18 0FS) currently has the highest reported unleaded (E10) price in Watford at 175.9p per litre (approx. £8.00/gal). Prices are refreshed every 30 minutes, so this can change through the day.
- How do I find the cheapest fuel near Watford?
- Use the search box above to enter your postcode. fuel.co.uk will show you every forecourt ranked cheapest first, with live prices updated every 30 minutes from the GOV.UK Fuel Finder.