Overheat
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Just days after bringing you the first images of Mercedes? new S-Class, we caught a super high-performance S63 AMG version out hot-weather testing. The first clue to the fact that this is no ordinary ?S? is the two dual-pipe exhausts poking not-so-discreetly out the back. And at the front, note those extra air intakes below the bumper. They?re there in order to feed what will be a ferocious appetite for cooling and combustion air.
Just as well, as GermanCarFans.com reports that the 6.3-litre V8 lurking beneath the bonnet is a mighty powerplant, developing an awesome 510bhp and 465lb ft of torque, which Mercedes claims makes this the most powerful naturally aspirated (no turbos, no superchargers) engine in the world. And unusually for a V8, the AMG engine develops peak power and torque at quite high 6800 and 5200rpm respectively, which is a characteristic more commonly associated with race-prepared V8s. This promises to be a sensational engine.
While this new aluminium V8 isn?t much more powerful than the current supercharged 5.5-litre AMG V8, power delivery should be more linear and predicable because it won?t rely on the boost delivered by turbo or superchargers, says Edmunds.com. The current S55 AMG accelerates to 62mph in 4.8secs and goes on to a top speed of 155mph ? we reckon the S63 will shave a couple of tenths off the sprint to 62mph and easily match the current car?s top speed (with seconds to spare).
We?ve already reported that the recently launched R-Class will gain AMG variants, with the current 5.5-litre engine on offer and the new 6.3 to follow later on. We also expect this advanced new V8 to make an appearance in the new M-Class, also recently launched.
Just as well, as GermanCarFans.com reports that the 6.3-litre V8 lurking beneath the bonnet is a mighty powerplant, developing an awesome 510bhp and 465lb ft of torque, which Mercedes claims makes this the most powerful naturally aspirated (no turbos, no superchargers) engine in the world. And unusually for a V8, the AMG engine develops peak power and torque at quite high 6800 and 5200rpm respectively, which is a characteristic more commonly associated with race-prepared V8s. This promises to be a sensational engine.
While this new aluminium V8 isn?t much more powerful than the current supercharged 5.5-litre AMG V8, power delivery should be more linear and predicable because it won?t rely on the boost delivered by turbo or superchargers, says Edmunds.com. The current S55 AMG accelerates to 62mph in 4.8secs and goes on to a top speed of 155mph ? we reckon the S63 will shave a couple of tenths off the sprint to 62mph and easily match the current car?s top speed (with seconds to spare).
We?ve already reported that the recently launched R-Class will gain AMG variants, with the current 5.5-litre engine on offer and the new 6.3 to follow later on. We also expect this advanced new V8 to make an appearance in the new M-Class, also recently launched.
