There’s a thumping, unmistakable V8 growl under the hood. Read: Mercedes-AMG CLE 63 Could Pack A Twin-Turbo V8 Punch While specific details about the V8 in these prototypes aren’t known ...

Work continues on the Mercedes-AMG CLE 63 as spy photographers have caught a lightly camouflaged prototype. This particular model eschews a charging port, suggesting it has a twin-turbo 4.0-liter V8.

Under the bonnet you’ll find AMG’s familiar M177 4-litre twin-turbo V8. It’s the same basic unit found in the W205 C 63 range and comes in the same two states of tune. The basic GLC 63 gets ...

Finally, black-painted brake calipers are available on SL55, SL63 and SL 63 S E Performance models ... We'd go with the more expensive SL63 to unlock the twin-turbo V-8's maximum power.