Team Rosberg's Jamie Green feels he was unable to 'extract the optimum' from his Audi RS 5 after qualifying sixth for the weekend's first DTM race at Zandvoort.

The current DTM points leader was the top RS5 runner behind BMW and Mercedes in what was a difficult qualifying for Audi. Green believes his final run became compromised when having to go off-line during the out lap.

Green also said the performance weight, accrued from leading the championship, meant that catching the BMW's was always going to be a tall order.

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"You can only make the best of your possibilities and we have clearly heavier cars here than BMW," said Green.

"I'm pleased with the work in the team between free practice and qualifying. Balance was clearly better. I was a lot happier in the car.

"Unfortunately, on my second trial, I didn't have a clear outlap. Here at Zandvoort, that's a problem with the sand because the tires no longer have optimal grip in that case. I feel like I didn't quite extract the optimum."

Although not thrilled with the outcome of qualifying, Audi's DTM boss Dieter Gass conceded that the balance of the weight performance between Audi and BMW wasn't the only factor.

"That BMW are in front here doesn't surprise us," said Gass. "But I wouldn't want to say that weight is the only factor.

"They seem to be very fast here anyhow - at least in qualifying. Now we need to wait and see how the race goes. 40 minutes here at Zandvoort are long."