Audi's Mattias Ekstrom has taken a dramatic 21st career DTM pole position after a last gasp effort usurped Mike Rockenfeller's effort by 0.005's at a rain soaked Red Bull Ring.

The 20 minute session took place under treacherous conditions as a band of persistent heavy rain hit the Spielberg circuit from around 9 o'clock local time.

The adverse weather had already wreaked havoc on the schedule resulting in the earlier warm up session being abandoned after seven-minutes.

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Luckily the rain abated as qualifying loomed but rivulets of water still existed on the circuit with large levels of spray also creating visibility issues.

Predictably the conditions created numerous off-track excursions as the cars scrambled for grip but it was Ekstrom who dealt best with the situation.

The Swedish veteran was a likely candidate for pole right through the session but as the flag fell, it was Team Phoenix's Rockenfeller who sat at the top as the rain once again began to fall in the final minutes.

From the first two splits, Ekstrom's last attempt hadn't looked to have been anything special but the former double DTM-champion flew through the final sector to take pole by the slenderest of gaps.

ART Grand Prix's Gary Paffett and HWA's Pascal Wehrlein weren't far away on the second row of the grid while Robert Wickens also shone in fifth.

Wehrlein scuppered his final flyer when the Mercedes Formula 1 reserve driver slipped off the road at turn 3.

Yesterday's race one winner Edoardo Mortara finally incurred his first blemish on what was a so far perfect weekend for the Audi driver in sixth ahead of Timo Scheider in seventh.

HWA's Christian Vietoris and Paul di Resta will line up eighth and ninth while Audi's Adrien Tambay recovered from an early off and posted a time good enough for the top-ten.

BMW's Spielberg woes continued with Martin Tomczyk lining up as the top M4 runner in 14th position. Reigning champion Marco Wittmann fared even worse as he skated off the circuit at turn 3 on his way to 21st.