The rest of the Porsche Mobil 1 Supercup field didn't stand a chance against another dominating by performance by Rene Rast as he took his fourth win of the season.

The Al Faisal Lechner Racing driver led every lap on the Valencia track around the city's America's Cup harbour, leading by seven seconds as he collected the checkered flag.

“Another perfect weekend. We had an extremely quiet race. I got away very well at the start and took some heat out of the pace to look after the tyres,” he said after the race which saw his championship lead extend to 14 points as the season reached the halfway point.

“I reckon that was the key to success today. Actually, I was never driving at the limit and still had plenty of reserve in case I needed to push. During the last weeks we've managed to take a huge step forward. I'd like to thank my team for this. It's still too early to say the title is ours, but we're holding a comfortable lead.”

Behind the dominant German Norbert Siedler finished second and reigning series champion Jeroen Bleekemolen rounded out the podium, the Dutchman moving into second in the championship ahead of Nick Tandy, who struggled all weekend and could only make his way to eighth place from tenth on the grid, though he was the only man to make up two places during a race on a track where passing opportunities are notoriously hard to come by.

Jaap van Lagen finished fourth ahead of Sean Edwards, the best Briton in the race recording his best result of the season despite dropping a spot from the grid.

Stefan Rosina's sixth place in the race was good enough to defend his fourth place in the overall standings, actually gaining ground on Tandy.

Supercup legend Patrick Huisman finished seventh. Sascha Maassen and Sebastiaan Bleekemolen completed the top ten.