A few details have emerged, along with Lotus tuning the chassis at some stage(alleged).
Even if it's pegged down to 10k rpm and bumped up to 2.2 litres It could easily push out 650bhp plus, as the "standard" 2 litre found in the A45 AMG can knock out about 400bhp today.It will feature a Mercedes F1 hybrid powertrain redeveloped for the road and engineered at Mercedes-AMG High Performance Powertrains in Brixworth, where F1 racing engines are also made.It is not yet known whether the F1 engine’s 1.6-litre capacity will be retained or if the road engine’s block will be bored out for improved reliability. The racing engine’s 15,000rpm rev limit will almost certainly be significantly reduced for the same reason.
On top of this, the Hybrid tech is said to be deployed on this car too...
Possibly with all bells and whistles it could have a good 800bhp plus.an F1 powertrain was being considered for use in a Mercedes hypercar earlier this year. “We have the most energy-dense hybrid pack in existence,” said one insider in April. “It would make a great deal of sense to harness that technology for the road.”
With Red Bull getting involved with AM, it seems to have pushed Mercedes into making the most of their F1 tie up.
And Lotus appear to be getting involved with chassis tuning for the road. At this early stage, no grandiose claims of lapping silverstone quicker than an "f1 car"....The car’s chassis and body will be built around an F1-style carbonfibre monocoque, with software and hardware for its systems that take influence from the F1 team’s F1 W07 race car. The results will make for a car that should rival Aston Martin’s similarly focused AM-RB 001, which also benefits from F1 technology and construction know-how.
Pricing for the Mercedes will most likely be similarly stratospheric; a figure of around £3 million has been mooted.
http://www.autocar.co.uk/car-news/new-c ... tus-tuning