Despite incessant teasing of the upcoming Mercedes-AMG C63 coupe, we have yet to see the actual Mercedes-Benz C-Class coupe without layers of camouflage tape. Fortunately, our spy photographers spotted the new C-Class coupe testing with almost no disguise, providing an early look at the new two-door.

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Aside from its low, sloped roofline, the biggest changes between the Mercedes-Benz C-Class coupe and its AUTOMOBILE All-Star-winning sedan progenitor concern the car's bodyside creases. The coupe wears a prominent crease that runs from the front fender through the door handle, and terminates just before the taillights. A lower crease kicks up toward the rear edge of the door. Out back, the car's rounded trunklid and wrap-around taillights recall the design of the larger S-Class coupe.

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Earlier this month, reports indicated that the Mercedes-Benz C-Class coupe deliberately sacrifices some interior space in exchange for style and sportiness. A Mercedes official told Automotive News that the coupe has a significantly lower driving position and center of gravity than the sedan, and that the two-door car's suspension is tuned for a sportier ride.

If the C-Class coupe follows the trend set out by its sedan counterpart, expect to see a C300 coupe with a 2.0-liter turbo-four engine rated for 241 hp, and a C400 with a 329-hp 3.0-liter twin-turbo V-6. It is also possible that the C450 AMG will totally supplant the C400 model, giving more credence to the coupe's sporty pretensions. The coupe spied here is likely a C450 AMG coupe, as its more aggressive front fascia matches the look of the C450 sedan. That car is powered by 362-hp, 3.0-liter twin-turbo V-6, and can reach 60 mph in a claimed 4.9 seconds.

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Based on teaser photos and videos, we also know a Mercedes-AMG C63 coupe is on the way. If its power levels match those of the sedan, expect the base C63 to dish out 469 hp and 479 lb-ft from its 4.0-liter twin-turbo V-8, with the C63 S model packing 503 hp and 516 lb-ft.

Look for official photos and information on the 2016 Mercedes-Benz C-Class coupe later this summer, as the car is expected to debut at the 2015 Frankfurt auto show in mid-September.