Should Porsche be worried here? Quite possibly.
It's no secret that Mercedes-Benz has been developing a Porsche 911 Turbo fighter for some time now. Set to also replace the ageing SLS AMG GT, Mercedes' new high-end sports car could very well end up being the most serious threat to the 911 ever. And some new details explain why that could be the case. Power will come from a new twin-turbocharged 4.0-liter V8, it'll be able to make the sprint to 62 mph in "well under 4.0 seconds" and manage a top speed "above 190 mph."
The gearbox will be an upgraded version of the Getrag unit currently in the SLS. The still unnamed model (latest rumors suggest it'll be called the "GT") will be built on a predominantly aluminum spaceframe with elements taken from the SLS. The body will be a combination of aluminum and composite panels complete with 19-inch wheels. Compared to the SLS, the GT will be more than five inches shorter, although width and height will remain about the same. Production will take place at AMG's headquarters in Affalterbach, Germany - the same facility where the SLS is built. Unfortunately, gullwing doors won't be carried over. Pricing will be in the neighborhood of $160,000.