Audi has officially revealed its modern recreation of the iconic Quattro with a new concept car for next week’s Frankfurt motor show.

The plug-in hybrid concept celebrates 30 years since the original Sport Quattro appeared at the 1983 Frankfurt motor show. Audi openly refers to the new concept of the same name as the “legitimate successor” to the 1980s icon.

The new Sport Quattro is a petrol-electric plug-in hybrid with a combined 690bhp, which makes it the most powerful Audi ever. It is understood to be based on the Volkswagen Group’s next-generation MLB platform, which will go on to underpin a whole range of big new Audis as well as new models from Porsche, Bentley and Volkswagen.

The concept is 4602mm long, 1964mm wide and 1386mm high, with a wheelbase of 2784mm. This makes the two-door coupé concept slightly shorter, a fair bit wider and a touch taller than the RS5 coupé, with a marginally longer wheelbase. The fact that it is shorter than the RS5 despite the wheelbase being longer is due to the reduced overhangs, which give the concept a low-slung look and an elongated profile.