Where is the cheapest fuel on the M3?

The cheapest reported unleaded at a M3 service station is 181.9p per litre at BP (WINCHESTER SOUTH CONNECT MWSA) near WINCHESTER. Prices were last refreshed at 1:02am on 31 July 2026 from official UK Government fuel price data.

How much more expensive is fuel on the M3?

Across the 4 M3 service stations currently reporting unleaded, the average is 181.9p per litre against a national average of 159.9p: 22.0p per litre more, about £11.00 on a 50-litre fill. Leaving at a junction usually beats filling at the services.

Which stations count as M3 services?

Stations flagged as motorway services in the official UK fuel price scheme, matched to the M3 by its road geometry (OpenStreetMap) or by the road named in the station's own published details.

Live prices

Cheapest fuel on the M3

4 service stations on the M3 report through the official UK fuel price scheme, ranked cheapest unleaded first.

The cheapest reported unleaded on the M3 is 181.9p per litre at BP (WINCHESTER SOUTH CONNECT MWSA) near WINCHESTER. M3 services average 181.9p, 22.0p above the national average of 159.9p: filling 50 litres off the motorway typically saves about £11.00.

Prices last refreshed at 1:02am on 31 July 2026, supplied through the official UK Government fuel price open data scheme.

Grade	M3 average	National average	Difference
Unleaded (E10)	181.9p (4)	159.9p	+22.0p
Diesel (B7)	201.9p (4)	178.8p	+23.1p
Premium Unleaded (E5)	198.4p (4)	177.4p	+21.0p
Super Diesel (SDV)	218.4p (4)	197.7p	+20.7p

Every M3 service station, cheapest unleaded first

Station	Unleaded	Diesel	Premium	Super diesel	Updated
BP (SO21 1PP)24hM3 MOTORWAY SOUTHBOUND, WINCHESTER, HAMPSHIRE	181.9p	201.9p	202.9p	222.9p	11 mins ago
BP (SO21 1PP)24hM3 MOTORWAY NORTHBOUND, WINCHESTER, HAMPSHIRE	181.9p	201.9p	202.9p	222.9p	11 mins ago
WELCOME BREAK (GU51 1AA)24hMOTORWAY SERVICES, FLEET NORTH, FLEET, HAMPSHIRE	181.9p	201.9p	193.9p	213.9p	11 mins ago
WELCOME BREAK (GU51 1AA)24hMOTORWAY SERVICES, FLEET SOUTH, FLEET, HAMPSHIRE	181.9p	201.9p	193.9p	213.9p	11 mins ago

Prices are supplied through the official UK Government fuel price open data scheme (Open Government Licence v3.0). Road matching uses motorway geometry from OpenStreetMap, © OpenStreetMap contributors (ODbL), and the station's own published details.

Leaving at a junction?

Prices a mile or two off the M3 are usually far cheaper. Search any postcode along your route.

More motorways

All motorway services prices

Questions about M3 fuel

Where is the cheapest fuel on the M3?: The cheapest reported unleaded at a M3 service station is 181.9p per litre at BP (WINCHESTER SOUTH CONNECT MWSA) near WINCHESTER. Prices were last refreshed at 1:02am on 31 July 2026 from official UK Government fuel price data.
How much more expensive is fuel on the M3?: Across the 4 M3 service stations currently reporting unleaded, the average is 181.9p per litre against a national average of 159.9p: 22.0p per litre more, about £11.00 on a 50-litre fill. Leaving at a junction usually beats filling at the services.
Which stations count as M3 services?: Stations flagged as motorway services in the official UK fuel price scheme, matched to the M3 by its road geometry (OpenStreetMap) or by the road named in the station's own published details.