Asda has increased fuel prices by an "unheard of" 5p in a single day, as drivers face paying £100 to fill up the average car.
The average litre of petrol cost is now 180.73p and for diesel it is 186.57p, according to latest RAC figures.
This means it currently costs around £99.40 to fill up a 55-litre petrol car and £102.61 for diesel.