Britain's two biggest supermarkets are dropping the price of petrol, they announced yesterday.
Tesco knocked 2p per litre off all grades at its forecourts.
Rival Asda will follow suit today by bringing unleaded down three to four pence to a new 93.9p. Diesel drops from 97.9p to a flat of 95.9p.
The retailers said reductions came from a drop in wholesale costs.
Tesco has a local pricing policy which means prices vary.
A spokesman said: "We are fully committed to giving our customers great value on fuel. Everyone knows oil prices have been very high - this shows we are determined to bring prices down as soon as the wholesale cost falls."
Asda's unleaded previously varied from 96.9p to 97.9p in different parts of the country.
It will bring in the new flat rate at all 167 forecourts.