Anthony Davidson says it is going to be a challenge to keep hold of Toyota's unbeaten record in the FIA World Endurance Championship at the Six Hours of Fuji, the manufacturer's home race, and believes the team will need a huge change in fortunes if he is to return to the top step of the podium this weekend.

The defending WEC champions have claimed victory in each of the last three years at Fuji since it returned to the international endurance stage. The former Formula 1 driver admits as much as Toyota wants to keep hold of its unbeaten record at home he feels a drastic switch in conditions will only give them the chance to close the gap on Audi and Toyota.

"We have a great track record there. We are undefeated in WEC at Fuji," Davidson said. "I know it is going to be a challenge to keep that winning run going for another year but you never know. The weather can be unpredictable in Fuji at this time of year and wet conditions would sway things in our favour.

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"We'll be giving everything to take any opportunities that come our way. We are all looking forward to our home race at Fuji. Hopefully we can put on a good show for the fans and all our TOYOTA colleagues who come to support us."

Toyota has lost ground to its German manufacturer rivals after both Audi and Porsche have been able to unlock greater potential and total power output from its respective hybrid engines which has left Toyota down on acceleration and straight-line speed.

These weaknesses could be exposed even further along Fuji's 1.475km straight but Toyota team president Toshio Sato says his squad still plans to but on a show for its home crowd.

"As our home race Fuji Speedway is always a highlight of the year for our team," Sato said. "We experience fantastic support from the Japanese fans and they make us feel very welcome. In the past three years we have had great success at Fuji so we have some special memories and we will be pushing as hard as possible again."