Audi has been showing off how efficient its current range of models are in real-life conditions by running a selection for 4182km from Norway to Italy.

The Efficiency Challenge A to B runs from the village of A on the Norwegian Lofoten Islands to Bee in Northern Italy.

See the high-res Audi Efficiency Challenge A to B picture gallery

Audi has released interim results on how its models are performing, with the new A3 1.6 TDI coming out on top so far. Its emissions are 99g/km and it has managed a claimed 94.2mpg. By comparison, the S3 has returned 40mpg so far.

The Audi A4 2.0 TDI e, with CO2 emissions of 119g/km, has so far returned 72.4mpg, with the S4 model returning 36.7mpg.

Other models taking part include the new A5 Sportback 2.0 TFSI, which has managed 57.6mpg, and the Q7 V12 TDI, which has returned 32.5mpg.

The challenge runs over three legs – from A to Trondheim, Trondheim to Berlin and Berlin to Bee – and it will take in towns, villages, city centre, autobahns and the Alps. It is expected to end on 30 September.

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