If McLaren's time isn't at least 20-30 seconds faster than a 918, it should be considered a failure. On paper it is much much lighter and has more power and downforce.

Porsche has already stated the 6:57 is not even close to their best, they took it easy just so they can finish the lap. Quite a few people have had confirmations from Porsche that another 10 secs can easily be had, and that would put the 918 at 6:47. But Porsche is holding their cards to their chest waiting for McLaren. 

But think about it, even if McLaren confirmed a 6:30, and say 6:45 is the absolute best from a 918, is 15 seconds a big enough gap for a car that has an extra 30hp and 600lb less weight?

McLaren probably realized either way they cannot win and this is their best retreat route and saves face. 


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