What's all this about?

The rather spiffing Mercedes GLC has already been confirmed for a midlife model update - primped looks, new tech, massaged interior, fresh engines - so can you guess what's going to happen to the attendant GLC Coupe model next?

It gets the same round of revisions?

Bingo! Facelifted with the most modest of airbrushes, outside you've got new light clusters fore and aft (with standard-fit LEDs in the conk being the main talking point), while the air intakes, rear diffuser and bumpers have been tweaked; you'll notice the last item most of all if you clock the chrome lower trim that said bumpers now feature. Inside, it's full MBUX-a-go-go, plus the addition of some driver assist technologies, a fresh design of steering wheel (there are actually two, depending on what kit you've had fitted) and the Trailer Manoeuvring Assist feature, too.

OK, and what about under the twin-straked bonnet?

Four-pot power only. For now, at any rate - we reckon a V6-powered 43 and a bonkers, V8-toting GLC 63 S can't be too far away from the updated Coupe's portfolio, ready to take the fight to the hot BMW M SUV twins. But until then, quad-pot propulsion it is.

Can you outline the motors?

Yep. There are two petrols and three diesels, all turbocharged and all driving both axles (4Matic) through a nine-speed gearbox. The petrols also gain EQ-Boost electric augmentation, bringing another 150Nm to the mix (although Merc won't quote the petrol-electric drivetrains' series outputs, only giving the petrol unit's torque and then the additional oomph of the electric motor as a separate figure). Meanwhile, the diesels are the quieter, smoother OM654, which is most excellent news for the GLC Coupe's refinement levels. Basically, you kick off the petrol front with the 197hp/320Nm GLC 200, then there's the 258hp/370Nm GLC 300. Over on the diesels side of things, the GLC 200 d deploys 163hp/360Nm, the GLC 220 d knocks those numbers up to 194hp/400Nm and, for the torque-thirsty, try the GLC 300d - it's packing 245hp and 500Nm. From this little lot, you'll get as much as 54.3mpg and as little as 38.2mpg (WLTP combined figures), while CO₂ emissions range from 145- to 169g/km.