Fuel prices
Petrol and diesel prices in Hertfordshire
Average pump prices across 122 filling stations in Hertfordshire, from the prices every UK forecourt must now publish under the government’s Fuel Finder scheme. Checked 16 Sept, 16:47.
- Average unleaded petrol 172.6p 0.9p above the UK average
- Average diesel 194.4p 0.2p below the UK average
- Cheapest petrol 158.9p Costco Wholesale Watford
- Filling stations 122 32 at supermarkets
Unleaded petrol averages 172.6p a litre across 119 forecourts in Hertfordshire, 0.9p above the UK average. Diesel averages 194.4p, 0.2p below the UK average. The cheapest petrol is at Costco Wholesale Watford in Watford, 158.9p; the dearest is 191.0p. The cheapest diesel is there too, 177.9p.
Cheapest petrol and diesel in Hertfordshire
| Filling station | Price |
|---|---|
 Costco Wholesale Watford Watford | 158.9p |
 Asda Watford Supercentre Watford | 161.7p |
 Sainsbury's Dome Roundabout Watford | 162.9p |
| Asda Hemel Hempstead Express Petrol Hemel Hempstead | 163.9p |
| Asda Sandy Lodge Express Petrol Northwood | 163.9p |
 Tesco Watford Extra Watford | 163.9p |
| Costco Wholesale Stevenage Stevenage | 164.9p |
| EG Flamstead St. Albans | 164.9p |
| Asda Elstree Allum Lane Borehamwood | 165.7p |
 Esso Asda Dacorum Express Petrol Hemel Hempstead | 165.9p |
| Filling station | Price |
|---|---|
| Costco Wholesale Watford Watford | 177.9p |
| Asda Watford Supercentre Watford | 180.7p |
| Sainsbury's Dome Roundabout Watford | 181.9p |
| Tesco Watford Extra Watford | 182.9p |
| Costco Wholesale Stevenage Stevenage | 183.9p |
| Shell Little Waitrose Sceptre Watford | 184.9p |
| Asda Sandy Lodge Express Petrol Northwood | 185.9p |
| Clarks Garage Walkern Ltd Stevenage | 186.9p |
| EG Flamstead St. Albans | 186.9p |
 Gulf Radlett Road Service Station St. Albans | 186.9p |
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Supermarkets against other forecourts
Supermarket petrol is 3.3p a litre cheaper on average than at other forecourts in Hertfordshire.
| Forecourts | Petrol | Diesel | Stations |
|---|---|---|---|
| Supermarkets | 170.1p | 190.9p | 32 |
| Other forecourts | 173.4p | 195.4p | 86 |
Council areas, cheapest first
| Area | Petrol | Diesel |
|---|---|---|
| Watford | 166.6p | 187.0p |
| Hertsmere | 169.4p | 193.0p |
| Dacorum | 170.1p | 193.1p |
| Stevenage | 170.3p | 191.1p |
| Welwyn Hatfield | 172.5p | 195.3p |
| Three Rivers | 174.2p | 195.6p |
| St Albans | 174.3p | 195.2p |
| North Hertfordshire | 174.4p | 195.8p |
| East Hertfordshire | 175.2p | 197.2p |
| Broxbourne | 177.5p | 198.7p |
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.