DTM pre-season testing got underway in Portimao, Portugal this week with Mercedes-Benz-powered ART completing its first track running of 2015.

After Garry Paffett finished his pre-season shakedown he handed over to rookies Maximilian Gotz and Lucas Auer for the three-day test running between the 2-4 March.

The team suffered with technical problems throughout day one, only managing 20 laps on Monday, but were able to get up to speed for the next two days with full programmes with both drivers.

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Gotz was delighted with the test overall and enjoyed getting to grips with the Mercedes AMG C 63 DTM car.

"I'm really pleased to be under way once again," Gotz said. "My first laps out on track this year were great. Now I can't wait to get the bit between my teeth. I posted more than 100 laps and we tried out a lot of different things on the car.

"Also, we improved the way we work and communicate as a team. Everything went really well and I was aware of setup changes to the car straightaway, which is especially important where developing confidence in the car is concerned. I'm now looking forward to the next test in Estoril."

Lucas Auer added: "The first day of testing with my new team went well. ART and I improved with every run. We worked on set-up and practised the various routines. Working as a team with the mechanics and engineers was really great. Of course, there's still a lot to learn before the season opener, but being able to cover over 100 laps in a DTM car was a very useful experience."

The ART Grand Prix team were also joined by Team HWA and its drivers Paul Di Resta, Christian Vietoris, Pascal Wehrlein and Robert Wickens.

The German touring car season begins at Hockenheim on 2-3 May.