For the sake of diligence, exterior changes include a new AMG panamericana grille and front apron with jet wing, plus new side skirts and OLED (Organic Light Emitting Diode) tail-lights.
The panamericana grille on the S63 ensures the model looks different to the two other S-Class cabriolet models: the entry-level S560 and the top-of-the-range S65. The S65 also has a panamericana grille but with a V-shaped cooling air intake, while the S560 has a standard Mercedes grille.
It’s worth noting that our American test car is 4Matic four-wheel drive, which will be the only option for the S63, unless you live where we do. In the UK, it will only be available in rear-wheel drive.
Mercedes claims that difference is largely down to the S63’s four-wheel-drive system; the S65 uses rear-wheel drive. And so, for UK buyers, who will only get a two-wheel-drive S63 Cabriolet, acceleration increases to 4.2sec.
And then there’s the comfort and refinement. Despite offering this sort of speed and handling prowess, even in soft-top form, refinement and ride are impressive.
Inside, the S63 gets the new widescreen cockpit plus a few extras such as sat-nav and cruise control. Then there are some options worth adding too – most notably a £1600 Driver Assistance Pack that features all the clever semi-autonomous technology found on the S-Class saloon.
We tested the active distance control and active steering assist, which essentially allows you (if it were legal) to take your hands off the wheel for up to 30 seconds and can not only speed up and down but also steer around bends. It’s impressive stuff, even if means the Germans are just catching up with Tesla.
Where Los Angeles, USA On sale Early 2018 Price £141,000 (est) EngineV8, 3982cc, bi-turbo, petrol Power 603bhp at 6000rpm Torque 664lb ft at 2750-4500rpm Gearbox 9-spd automatic Kerb weight 2185kg Top speed 155mph 0-62mph 3.5sec Fuel economy 28.8mpg CO2, tax band 229g/km, 37% Rivals Aston Martin DB11, Bentley Continental GT