Nico Muller has topped the penultimate DTM practice session of 2016 for Audi after edging BMW's Antonio Felix da Costa in the dying seconds of FP2.

With the benchmark standing at the high 1 minute 33s barrier for much of the session, it wasn't until the final few minutes where the times began to tumble.

Team Schnitzer's Da Costa was the first to break the 1 minute 33 threshold but Team Abt's Muller later trumped the Portuguese driver's effort by just 0.026s.

BMW completed the remainder of the top-five with Bruno Spengler pacing FP2 ahead of Augusto Farfus and championship leader Marco Wittmann.

Mattias Ekstrom's Hockenheim replacement Rene Rast once again dazzled firmly within the top-ten order after setting the sixth quickest time ahead of Team Rosberg's Jamie Green in seventh.

ART Grand Prix's Gary Paffett was the only Mercedes runner to make the top-ten in eighth while Miguel Molina and Mike Rockenfeller followed up in ninth and tenth.

It was another difficult session for Wittmann's chief championship rival Edoardo Mortara, who languished down in 14th.

The Abt Sportsline driver had a sizeable moment at turn one after running over the exit kerb, which pitched his Audi RS 5 into the air.