European Union plans to reduce emissions by forcing car manufacturers to fit low-resistance tyres by 2012 could add 200 to the price of a new car, according to the The Daily Telegraph newspaper.
However, the tyres, which could improve fuel economy and lower the emissions of each new car by an average of 4g/km of carbon dioxide, will reduce motorists' running costs.
This additional cost of buying a new car comes on top of proposed road tax rises, high fuel prices and the additional cost of safety and environmental equipment.
New-car prices are set to rise by an estimated 500-1000 by 2012, because manufacturers will be forced to fit expensive technology to meet stringent EU emission targets. They have to achieve an average of 120g/km of carbon dioxide across their ranges.
Other systems set to be made mandatory by 2012 are tyre-monitoring systems, which could add up to 100 to the cost of a new car, but save an estimated average of 3g/km of CO2.
Stability control, which could add a further 100 to the cost of new cars, is also set to become mandatory.