Southampton

The cheapest unleaded in town currently starts near 147p per litre. The very top of the local range is set by a small number of expensive outliers, and most stations sit much closer together than the headline gap suggests.

Supermarket forecourts from Sainsburys usually anchor the bottom of the local range. 3 of the 51 local forecourts are supermarket-run, and the rest split between branded and independent operators.

The low end of the market has recently been held by Costco around Regents Park Road. Several of the busier sites sit along Millbrook Road and Bournemouth Road, so you can check them against each other without leaving your usual route.

Unleaded prices around Southampton sit broadly in line with the rest of South East England. Diesel averages around 183p per litre across the stations listed for Southampton.

The comparison covers stations up to roughly 15 km out, which keeps out-of-town supermarkets and bypass sites in the same view as the town centre. If you drive through Southampton regularly, note that the price ordering below changes often enough that last month's cheapest stop may not be this week's.

The table below carries the exact live figures per station, and alerts can flag a drop at the forecourts you actually use.