Mercedes SL63 AMG

Hugely powerful Mercedes SL63 AMG aims to blend raw performance with luxury. Does it succeed?

Overall Auto Express Rating

4.0 out of 5

AMG has created a remarkable all-rounder with performance to shock, a soundtrack to awe and agility to surprise. The lack of steering feel and delayed gearbox response frustrate, but accept this and few cars offer such a complete package.

When it comes to very fast Mercedes drop-tops, it’s hard to argue there’s a need for anything above the very rapid SL500. AMG begs to differ, though – and has created a monster in the process.

Ignore the 63 badge on the bootlid, as under the SL63 AMG’s bonnet is a 5.5-litre V8, with a pair of turbochargers helping 
it produce huge power. In the standard car, that’s 503bhp,
but our test car had a 27bhp boost to 530bhp, thanks to
the optional Performance Pack.

Yet it’s torque, not power, that’s the most impressive thing about this engine: the Performance Pack sees the figure top 900Nm. That’s enough to trouble the rear tyres and traction control while helping the SL63 accelerate from 0-62mph in only 4.2 seconds.

Keep your foot to the floor 
and it’ll manage 125mph in just 12.6 seconds. The Performance Pack then allows it to sail past 
the usual 155mph electronic 
limiter, all the way to 186mph.

In the unlikely event that such staggering speed isn’t addictive enough, the engine and exhaust notes will captivate and thrill you. The V8 sounds fantastic and the 
burbling, crackling exhausts only add to the drama – even more 
so with the roof folded down.

So this car is as quick and noisy as a dragster in a straight line, but it doesn’t lack handling ability thanks to quick and alert AMG-tuned steering. There’s not much in the way of feel, though. This makes it difficult to judge the limit of grip – although it’s so high, you’re unlikely to reach it on a public road. And while the AMG obviously has a harder edge than the standard SL, it hasn’t lost that car’s ride comfort.

AMG sports suspension and Active Body Control manage
 to provide a supple ride, yet decent control, and there’s
 no hint of shake in the cabin. 
If there is a weak link, it’s the seven-speed auto gearbox.

It works well enough in fully automatic mode, although there’s the odd jerk if you’re 
in any way hesitant with the 
accelerator. And when you change gears using the car’s
 steering wheel-mounted
 paddles, there’s a frustrating delay on downshifts.

Gearbox aside, the SL63 
is an incredibly accomplished car, mixing genuine supercar 
performance with day-to-day 
usability. It’s a lot like the SL500, only even faster and 
with a more intoxicating
 soundtrack. Job done, AMG.

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