Along with the new Mercedes-Benz SL450 and SL550 comes this Mercedes-AMG SL63, a powerful variant with improved handling.

Published:Caption:Photo:Wayne Cunningham/Roadshow

The new SL-Class benefits from weight-reducing aluminum body panels.

Published:Caption:Photo:Wayne Cunningham/Roadshow

Much of the styling between the standard SLs and the AMG SL is similar, although these fender vents get the V8 Biturbo logo.

Published:Caption:Photo:Wayne Cunningham/Roadshow

The SL63 gets a split-grille crossbar inset with the AMG logo, as opposed to the single crossbar in the standard SL-Class.

Published:Caption:Photo:Wayne Cunningham/Roadshow

The SL63's AMG-built V-8 engine displaces 5.5 liters and uses twin turbochargers to make 577 horsepower.

Published:Caption:Photo:Wayne Cunningham/Roadshow

With the retractable hard top up, the SL63 assumes a Gran Turismo profile.

Published:Caption:Photo:Wayne Cunningham/Roadshow

The retractable hard top can be operated at speeds up to 25 mph.

Published:Caption:Photo:Wayne Cunningham/Roadshow

The SL63's adaptive suspension is well-tuned for light, nimble handling.

Published:Caption:Photo:Wayne Cunningham/Roadshow

Carbon fiber supports for the trunk lid help reduce weight.

Published:Caption:Photo:Wayne Cunningham/Roadshow

Quad rectangular exhaust tips are a nice touch for a performance look.

Published:Caption:Photo:Wayne Cunningham/Roadshow

The top retracts into the trunk, allowing enough room for a couple of backpacks, or a couple of small roller bags.

Published:Caption:Photo:Wayne Cunningham/Roadshow

Although a bona fide performance car, the SL63 shows off luxury appointments in the cabin.

Published:Caption:Photo:Wayne Cunningham/Roadshow

The SL63's electric power steering allows for quick, precise steering.

Published:Caption:Photo:Wayne Cunningham/Roadshow

You can quickly choose different drive modes and suspension settings with these console controls.

Published:Caption:Photo:Wayne Cunningham/Roadshow

The SL63 shares its infotainment system with its SL-Class siblings.

Published:Caption:Photo:Wayne Cunningham/Roadshow
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