Joining sedan and coupe offerings, it adds boulevard cruising appeal to the range. And the best thing about folding that cloth-top away, in 20 seconds, is the access granted to the howling 3.0-litre twin-turbo six.
The V6 isn’t AMG’s burliest powerplant, with the C63’s V8 still aural manna, but the optional exhaust makes it a crackling, popping, treat in the open air.
There’s an extra 135kg to deal with, but luckily the engine’s a powerful thing, too, feeding 270kW/520Nm into the all-wheel drive system. That power and grip help fling it to 100km/h in 4.8sec, making it only a tenth slower than the C43 Coupe.
But you’ll need to pick between the snarling exhaust note and a cosy neck as the package including the system fits performance seats that delete Mercedes-Benz’s signature neck heaters. Still, the interior’s a nice place to be, with a distinct art-deco look and feel that sets it apart from more clinical BMW and Audi workstations.
Dynamic-wise, a surprisingly sturdy bodyshell and rear-biased all-wheel drive system help it work 225mm/255mm wide contact patches with similar athleticism to the hard-top, but it’s maybe not the best track-day chariot. And it hasn’t transformed the hardtop’s sometimes spine-jolting ride.
Stuck in winter? Pick the optional exhaust, the sound will be warming enough. Even without neck warmers.
2017 Mercedes-AMG C43 specs
Engine: 3.0-litre twin-turbo V6