A prototype of the 2016 Audi A4 Avant has been spied undergoing testing, this time showing a little bit more of its design.

A prototype of the 2016 Audi A4 Avant has been spied undergoing testing, this time showing a little bit more of its design.

Several days ago we shared images of a virtually undisguised A4 (B9) sedan undergoing final testing and now time has come to take a look at its more practical sibling, the Avant. Needless to say, the sharp design will mostly be carried over from the standard model, but with a longer rear overhang that will likely accommodate a more spacious trunk compared to the outgoing version which can hold up to 490 liters with the rear seats up.

This prototype features partially undisguised lighting clusters, giving us the chance to take a better look at the sleeker headlights while the taillights feature a more angled design. The roof-mounted rear spoiler is also more angular while the roofline appears to be slightly more sloped to grant a more dynamic appearance to Ingolstadt's compact wagon.

We can't really tell from these images, but chances are Audi will make the new A4 Avant bigger while reducing weight thanks to the MLB Evo platform. An S4 Avant has already been caught on camera and we know there's a new RS4 / RS4 Avant on the way without the V8 engine as it will likely be powered by a turbocharged V6.

Expect the sedan to show up in September at the Frankfurt Motor Show whereas the wagon will likely be introduced in March 2016 at the Geneva Motor Show.

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Next generation Audi A4 Avant shows taillights in new spy pics