Penarth

At the bottom of the local market, unleaded starts around 151p per litre right now. Right now roughly 8p per litre separates the cheapest unleaded from the dearest locally.

The supermarket sites, including Tesco and Morrisons, tend to set the floor for prices here. Supermarkets account for 9 of the 23 stations here, with branded and independent sites making up the remainder.

Tesco around Excelsior Estate has been setting the cheapest unleaded price locally of late. Several of the busier sites sit along Ferry Road and Retail Park, so you can check them against each other without leaving your usual route.

Average unleaded here tracks the wider South Wales figure closely. Diesel averages around 173p per litre across the stations listed for Penarth.

Everything within about 8 km of the centre is included, so edge-of-town and retail park sites appear alongside the central forecourts. The cheapest station in Penarth is not fixed; the low spot moves between forecourts through the week, so the current ordering matters more than habit.

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