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The Audi Cross Cabriolet Quattro concept accelerates from 0-62mph (100kph) in 7.2 seconds and has a top speed of 149mph.

View more pictures of the Audi Cross Cabriolet Quattro

Audi has unveiled a 150mph off-roading convertible which it claims is the world’s cleanest diesel car.

The Audi Cross Cabriolet Quattro concept, which is on display at the LA Auto Show, is powered by a turbocharged 3-litre V6 diesel producing 235bhp and 368lb/ft of pulling power.   

This accelerates the Audi Cross Cabriolet Quattro from 0-62mph (100kph) in 7.2 seconds and on to a top speed of 149mph, while averaging 38.6mpg.

Audi has used a non toxic solution called AdBlue in the engine, which destroys pollutants and reduces nitrogen oxide emissions by up to 90 per cent.

Rolling on 21-inch alloys, the Audi – which is based on the same platform as the A4 and A5 – features Quattro four-wheel drive which channels 60 per cent of the pulling power to the rear wheels through an EIGHT-speed automatic gearbox.

And in areas with poor traction the power distribution can be diverted so the front wheels can take up to 65 per cent with the rear wheels capable of taking 85 per cent of the pull.

Inside, the Audi Cross Cabriolet Quattro is fitted with Google Earth-powered sat-nav, where the driver can click on an image in the Google interface and be directed to that destination. 

Initially a concept, it’s unlikely the Audi will have 21-inch wheels and it may eventually lose the cabriolet feature and be the future Q5, a more compact version of the Q7.

View more pictures of the Audi Cross Cabriolet Quattro