The average price for a litre of petrol has hit a new record high of 185.04p in further misery for drivers.
The average price of diesel was 190.92p per litre on Sunday, having fallen slightly back from a record of 191.03p on Saturday.
It comes after the price of filling up a 55-litre family car hit the £100 threshold on Thursday last week.
A week ago, petrol averaged 177.88p a litre and diesel 185.01p, representing a rise of 7.16p in a week for petrol and 5.91p for diesel.
And one year ago, petrol averaged 130.53p a litre and diesel 132.93p.
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The surging cost of fuel for drivers comes despite wholesale prices being lower than before the pre-Jubilee peak.
The wholesale price of petrol hit 100.17p a litre on June 1 before tax, and had fallen to 96.10p on Friday. This morning, so far, it remains at around 96p a litre.
Diesel on its way to the retailer has gone up from 93.0p a litre on June 1, to 103.86p on Friday. It remains around 103.6p this morning.
The rising cost of fuel is linked to expensive oil prices.
The price of oil is going up because it is more in demand and this has been made worse by the war in Ukraine.
There were already shortages that sent fuel skyrocketing last year and now businesses are cutting off ties to Russian oil.
Luke Bosdet, the AA’s fuel price spokesman, said: “Petrol price rises should be grinding to a halt, at least temporarily, by the end of the week.
“There may still be some forecourts yet to pass on the recent surge in costs.
“If they continue to go up substantially afterwards, we will be intrigued to hear what excuses the fuel trade has this time.
“If prices keep going up, they will give the Government further justification in its call to the Competition and Markets Authority for an investigation.
“Diesel’s relentless surge in costs remains a nightmare, with its knock-on impact for the cost of delivery of goods and services, and therefore inflation.”
He added: “With petrol, however, this is an extremely volatile market and only time will tell whether the recent fall in costs is a brief pause or a longer-term reversal.
“For the fuel trade, the UK expects it to do the right thing and set a fair price for petrol.
“In particular, the price difference between neighbouring towns needs to shrink substantially in many areas, particularly with supermarkets of the same brand.”
