We know only too well how expensive it can be ferrying the kids from A to B and getting into work.
But don't expect any respite - for it's actually getting dearer, according to latest figures. The AA said prices at the pumps have risen more than 2.75p a litre in the past two weeks to reach 140.20p a litre.
It's the first time fuel prices have broken through the 140p barrier, in what is another reminder of how expensive it can be running a family car.
Diesel was also at a record high, costing motorists 146.72p per litre.
People filling up with petrol back in January were paying just 132.25p per litre, while those with diesel vehicles were charged 140.56p on average.
But motorists are now forking out an extra £8.44 a month on petrol because of this year's 7.95p-a-litre increase, the motoring organisation said. The estimate was based on people putting 106.17 litres of petrol in their cars per month.
In another blow, August's fuel duty increase is to go ahead, after no further change to the plans were announced in the Budget. When VAT is also considered the rise will equate to an extra 3.62p per litre for motorists.
RAC technical director, David Bizley, said: "Just days after the Chancellor refused to cancel the planned August rise, prices have now hit another painful barrier for Britain's hard-pressed motorists.
"A figure of £1.40 a litre is a massive price for people to have to pay and there is no end in sight to rising prices. The way things are going the planned duty rise will see average petrol prices hit the £1.50-a-litre mark - forcing more and more people who need their cars off the road."
Check out this guide to the changes which concern motorists in the Budget, for the full lowdown.