It's no secret that Mercedes is giving the E-Class a facelift for the 2020 model year. We've already seen prototypes of the upcoming E-Class sedan and its coupe sibling undergoing testing, and now our spies have caught the upcoming facelifted version of the AMG E53 Coupe being put through its paces on the roadways around the Nurburgring.

Like the regular 2020 E-Class Coupe facelift, the cosmetic changes are going to be relatively minor. Camouflage is covering the front and rear preventing us from seeing some of the design changes, but the new headlights have a noticeably slimmer shape, along the lines of the new GLE's.

We're also expecting the 2020 E-Class Coupe to incorporate a new grille and redesigned front bumper to give the coupe a more menacing look. The taillights have also been redesigned, and we're also expecting the rear bumper to be updated.

Bigger changes will likely be found inside. Our spy photographers weren't able to snap any photos of the cabin, but the AMG E-Class Coupe ought to be updated with the latest MBUX infotainment system, which is far more advanced and intuitive than Mercedes' old COMAND system. And then, of course, there's the small matter of the big engine.

The current Mercedes-AMG E53 Coupe is powered by a 3.0-liter turbocharged inline-six with an electric-assist system producing a solid 429 horsepower and 384 lb-ft of torque. Power is sent to all four wheels through a nine-speed automatic transmission. This electrified powertrain enables the stylish coupe to sprint from 0-62 mph in 4.3 seconds and onto a top speed of 155 mph. Since this engine was only recently introduced for the 2019 model, we aren't expecting the upcoming 2020 facelift to offer any powertrain upgrades.

Mercedes hasn't lifted the wraps off the regular E-Class Coupe yet, so don't expect to see the new AMG version arrive until next year at the earliest.