Sebastien Loeb has refuted his position in the World Touring Car Championship by claiming his 'work isn't done' despite trailing both defending champion Jose Maria Lopez and Yvan Muller.

The nine-time World Rally Champion currently sits 92 points adrift of Lopez and 37 off Muller with four rounds remaining but says he will keep fighting to the end after a breakthrough maiden WTCC pole position at Paul Ricard along with three race wins this season.

"My goal is to be in with a shot and to fight for pole positions and race wins. My work isn't done," Loeb said. "I have to keep working hard to get up to the standard of my team-mates.

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"That means avoiding the little mistakes and producing flawless laps. Pechito and Yvan are really good at that, but I feel like I'm improving all the time."

Loeb took part in a mid-season test session at Motorland Aragon circuit alongside his three team-mates testing out new parts for the Citroen C-Elysee WTCC machine, which were solely focused around the differential, braking and rear-end assembly parts.

Although the WTCC drivers' title looks out of Loeb's reach he is determined not to give up on fighting towards the championship for next season after switching to WTCC in 2014 after a career in WRC.

The Twin Ring Motegi is set to host the ninth round of the WTCC on the 12-13 September.