Audi is the latest German carmaker to offer a free software upgrade for its diesel vehicles in an effort to improve the vehicle's emissions.
Thousands of luxury British vehicles are to be recalled amid a scandal over 'fake' emission results.
Mercedes was the first manufacturer to offer a software upgrade to three million of their cars earlier this week.
Almost every diesel model mercedes-benz sold in Britiain over the past six years is believed to be affected.
The upgrades are expected to cost the German car firm 195million pounds.
Audi's software emissions upgrade is targeted towards its luxury top-and estate,saloon and suv models.
The recall affects cars fitted with six-and eight-cylinder [v6 and v8]diesel motors meeting the Euro 5 and Euro 6 emissions standards.
According to some sources,models built by porsche and volkswagen are also set to be recalled.
Official figures by Audi reveal how many British cars will be affected have not yet been confirmed.