If there’s any element of disappointment to be found with the CLS 63 AMG it’s when you first slip behind the wheel. Start the car and go for a drive and all is forgotten, but to look at it’s not the most inspiring of layouts.

The steering wheel has suede grips on the sides and a flat bottom, and behind that there’s a set of AMG-branded instruments while the dashboard on our car was trimmed with carbon-fibre and stitched leather. Apart from that though, and the odd AMG logo elsewhere, it just looks like a regular CLS in there.

Switchgear shared with the firms most basic – and cheapest cars – doesn’t inspire confidence when spending nearly £100,000 on a luxury Coupe or Shooting Brake.

It’s all clearly laid out though, and the instruments and seven-inch central display screen are easy to use. While it can’t match Mercedes of old for perceived build quality, everything is expertly finished and feels solid enough.

The Comand system, and its rotary controller on the centre console, isn’t the easiest device to use at first but time familiarising yourself with its layout, quirks and commands soon clears up any confusion – even if Audis’ MMI controller is more instantly intuitive.

Still, the multi-adjustable seats make it a cinch to slide into the perfect driving position, the electric memory meaning you can return to your saved settings at the touch of a button after someone else has been driving the car. Opt for the Dynamic Multi-Contour Seat Package and the side bolsters inflate to hold you in place as you round a corner while the massage function keeps you relaxed and comfortable on longer journeys.

It might be something of a surprise to learn that Mercedes CLS 63 AMG comfort is actually something of a strongpoint for this car. Although this AMG model packs over 500bhp beneath the bonnet, sports suspension behind the 19-inch alloy wheels and sports seats inside, the CLS was designed first and foremost as a comfortable but capable GT car with a dash of added practicality.

As standard the car comes with electrically adjusted, heated leather seats that are perfectly comfortable. The options on our car meant they were also ventilated, finished in premium soft leather and offering a range of extra adjustments, dynamic bolsters to support you when cornering at speed and even a massage function. In short, if you can’t get comfortable on such a throne your only option is a very good chiropractor.

Though the AMG model runs on sports suspension it does use adjustable dampers; normal being the most comfortable of them all. It’s still firm, especially at lower speeds, but save from the odd shimmy through the 19-inch alloy wheels its perfectly smooth enough to live with – and high speed motorway journeys are even better as the CLS 63 AMG floats over most that is thrown at it.