One in 10 drivers are giving up nights out so they can afford petrol, according to a poll by the AA.
It's because the average price of unleaded topped £1 a litre again on this week.
The motoring group say prices at the pumps have now risen 4p a litre in the past month.
In its survey of 15,000 drivers last month, the AA found 26% of people were using their car less, with 12% reducing their spending elsewhere.
The main areas people are cutting back are eating out, going to the cinema, theatre and other entertainment.
Most affected by high petrol prices are people living in south-west England, Wales and the West Midlands with Londoners the least affected.
AA president Edmund King said: "This survey exposes just how drivers are suffering because of increasing fuel prices.
"We hope the Government will abandon further fuel duty rises to boost economic recovery.
"The research also begins to chart the course, set by market speculators pumping up the price of oil and fuel refiners' cutbacks, towards a prolonged recession and perhaps another collapse in the fuel market.
"Money and credit is far less plentiful than last summer with unemployment, frozen pay and reduced savings rates.
"Forcing drivers to switch potential high street spending into paying for fuel is hardly the way to stimulate a consumer-led recovery."