Quote Originally Posted by dimviii View Post
Jason Craig ‏@JournoJason

The Toyota Yaris #WRC test car has reportedly gone through four engines already. One managed just thirty miles...

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Depends how much they test. It's possible to do even more than 300 km of tests per day and in that case the engine needs a revision after just several days. We shall also take into account that the car first run only few weeks a go and it's the time when the problems shall appear to be later solved.