Sutton had to battle from outside the top six, but picked off his rivals in his Alliance Racing-run NAPA Ford Focus ST on the way to his 40th career BTCC victory.
Adam Morgan started on pole alongside Colin Turkington in an all-West Surrey Racing BMW front row, but Josh Cook, from third on the grid, pulled off a great manoeuvre on Turkington into the Complex to put his Speedworks Motorsport Toyota Corolla into second.
