Tom Chilton scored his second win of the World Touring Car Championship season as he passed RML team-mate Yvan Muller in the run to the finish line.
A shower before the race saw some drivers choose to start on wet tyres including Pepe Oriola who used his extra grip to take the lead once the race got underway following a safety car start.
The race came back to the slick-shod cars four laps later when Muller and Chilton worked their way back past the Spanish youngster.
Chilton attacked his team leader at the end of the final lap, with the pair running side-by-side through the closing corners and Chilton nosing ahead before the chequered flag to win by one hundredth of a second.
Bamboo Engineering Cruze drivers James Nash and Alex MacDowall also passed Oriola and finished third and fourth, the former holding off his team-mate to extend his Yokohama Trophy points lead.
Oriola made it to the finish in fifth while Rickard Rydell also chose wets and moved up to fourth early on before slipping all the way back to 14th on his WTCC return.
Rob Huff – who was announced as a Lada driver for 2014 on Sunday morning – finished sixth as best non-Chevrolet driver in his SEAT. He passed Honda’s Gabriele Tarquini on the last lap, with James Thompson and Tom Boardman following the Italian veteran across the line in quick succession.
Norbert Michelisz completed the top ten after getting the better of fellow Honda driver Tiago Monteiro.