A couple of prototypes of the 2016 Audi A4 Avant have been caught on camera undergoing final testing procedures.

A couple of prototypes of the 2016 Audi A4 Avant have been caught on camera undergoing final testing procedures.

Still wearing a full body panel disguise despite an imminent reveal, these near-production prototypes show their lighting clusters and one of the cars has full LED headlights and taillights. While the exterior design as seen on a camo-free prototype is debatable, the most important changes are underneath the skin where Audi's engineers have implemented the MLB Evo platform.

We've been hearing about a 100 kg (220 lbs) weight loss even though the B9 generation will actually be bigger than the outgoing model. Thanks to these increased proportions, expect the new A4 Avant to carry more cargo as the trunk's capacity will increase from the current 490 liters with the rear seats up and 1,430 liter after folding them.

The engine lineup is mostly shrouded in mystery, but we do know there's going to be a new 2.0 TFSI with 190 PS (140 kW) and 320 Nm (236 lb-ft) which according to Audi is the most frugal engine in this class. It will allow the compact premium model to consume less than 5 liters / 100 km (47 mpg US or 56.5 mpg UK). The range-topping RS4 will likely take the shape of an Avant-only model once again and it will lose the naturally aspirated V8 in favor of a smaller turbocharged mill.

Audi has recently announced the new A4 will be unveiled before the end of this month so the wait is almost over, following an agonizingly long string of spy images and videos.

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2016 Audi A4 Avant spied with LED headlights and taillights ahead of forthcoming reveal