Standings leader Muller now has an 18-point advantage over Rob Huff, who drives the third Cruze, after the weekend.
“Any victory is important, but the season is still very long,” Muller said. “I was very focused on taking a good start. I had tried that manoeuvre in the warm up this morning and I knew it was possible.
“Fortunately I was able to pass Gabriele at the first turn and then I had to drive as best as I could and look after my front left tyre.
“We did a great job by improving the race set-up during the morning warm-up. I pushed in the first lap to create a gap, but for the rest of the race my pace was the same as Gabriele’s and Rob’s.”
Menu dressed up as cartoon hero racer Michel Vaillant – and drove like him in race two.
“It was great to win in the shoes of Michel Vaillant. It was the icing in the cake for this weekend dedicated to our comic book hero,” he said.
“But obviously I am also happy for Chevrolet and for… Alain Menu! This victory keeps my hopes to fight for the world title alive.
“I had a very good start and then I pushed hard in the first laps because I wanted to create a gap, as I expected Rob and Yvan to recover in the second half of the race.
“We had changed the set-up after the first race, as I was not happy with it. The car was much better.”