Called BP Ultimate, it will be offered as a performance diesel, which BP claims is the first on the market, and a performance unleaded petrol.
The fuels were tested on a wide wage of cars on the UK market with the result, BP says, of better performance and reduced emissions of greenhouse gases and other environmental pollutants.
BP's retail director, Graham Sims, said: 'If you use BP Ultimate it can be like driving a car with a bigger engine or a newer model. And, if you drive a diesel, the reduction in noise can be like the difference between a van and a luxury saloon.'
The new fuel is available now at 400 BP outlets nationally but will be available throughout the UK by January 2004.