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It's not the biggest seller in the UK but is incredibly popular in markets where diesel isnt desireable, the 55 TFSI is a 3.0 litre 6 cylinder petrol engine with 340 horsepower, good for a 0-60 time of just over 5 seconds and a top speed limited to 155 mph. Fuel economy does drop a bit but the 55 is such a lovely smooth engine it really matches the refined ambience of the A6's executive nature. Our best prices on a new Audi A6 55 TFSI petrol are displayed above with our cheapest prices and the best deals we can find. The 2020; car is available in both saloon and avant formats, with the A6 Avant being around £2,500 more than the equivalent saloon, and specification levels are identical between the two. Just click on the model you are after to add your required colour and spec to see our what are our best new Audi A6 55 TFSI deals, and see how much you could save.