Team RAC boss Dick Bennetts says there will be a full post mortem to find out why Colin Turkington's car was underweight following the opening Dunlop MSA British Touring Car Championship race at Snetterton - something that resulted in the Northern Irish driver being excluded from what would have been a third win of the year.

Turkington had started the race from pole position and then battled back past team-mate Tom Onslow-Cole to take the flag in first place but was the excluded from the results afterwards when he car was deemed to be under the required weight by race officials.

It would prove to be a decision that ultimately cost Turkington for the remainder of the meeting as not only did he lose his win, but he was also forced to start race two from the back of the field with maximum ballast, and was only able to finish ninth and sixth from the final two races.

"There will be a post mortem but our feeling is that the TOCA scales have changed from yesterday as we have a print out from their machine showing the weight of Colin's car after qualifying," Bennetts explained to "We then drain the fuel and pump it out and weigh it so we know exactly what came out.

"We took it out after race one and another kilo of fuel came out, so to us, the car should have been one or two kilo's overweight. We then got Colin to weigh himself and he has lost a kilo which is unusual in 24 hours but that aside, the car should still have been one kilo over.

"We're gutted as it made no real difference to the performance and to finish first and third was fantastic, but the rules are the rules."

Despite the disappointment, there was reason to cheer as Onslow-Cole secured his maiden win in race three (see separate story).