Porsche may have been the first to unveil its new hybrid supercar concept three years ago, but with the McLaren P1 and LaFerrari now prepared to reach customers in production form, all eyes will be on Porsche to see how it responds. A big part of supercar bragging rights comes down to horsepower, and while the 795hp combined output from the 918 Spyder's 4.6-liter V8 and electric motors may have impressed a few years ago, the 900+ hp produced by the Ferrari and McLaren have since eclipsed it.

So what will Zuffenhausen do? According to one supercar buyer who has reportedly ordered all three, the production version of the 918 Spyder will pack 875 horsepower – a good 80 hp more than originally projected. Which may not be enough to trump the Ferrari or McLaren, but is tipped to help the 918 shuttle around the Nurburgring in less than seven minutes. The finalized version is also tipped to get the 911 GT3's new four-wheel steering system but keep the targa top its rivals don't have. We're told to expect the production 918 to bow at the Frankfurt show in September.