The latest high-performance SL AMG model will hit US showrooms a couple of months after the new-generation 2013 SL550, and following this preview it will make its official world debut at the Geneva Motor Show next month. Boasting more power, lighter weight, an advanced multi-clutch transmission, and around 30 percent better gas mileage (estimated at 23.8mpg combined), not to mention the requisite AMG supercar-like performance, there is plenty to get excited about.

The heavy weight of its predecessor was a real issue, but thanks to an aluminum bodyshell similar to the SLS AMG, 275 pounds have been trimmed off the new SL63 AMG. A new curb weight of 4,059 pounds coupled to 530hp translates to improved performance, faster acceleration, and better handling. For the first time the SL63 AMG is available with two power levels. The now-familiar M157 twin-turbocharged "biturbo" 5.5-liter V8 delivers 530hp and 590lb-ft of torque, while with an optional AMG Performance Package these numbers rise to 557hp and 664lb-ft.

Higher output and low fuel consumption is achieved through various high-tech components such as an ECO stop/start system, while an AMG sports exhaust system with a pair of twin tailpipes emits a distinctive soundtrack. Driving the rear wheels via an AMG Speedhift MCT seven-speed sports transmission, the standard engine can zip from 0-60mph in 4.2 seconds and has an electronically-limited top speed of 155mph. With the AMG package, 0.1 seconds is trimmed from the 0-60mph sprint time and the top speed rises to 186mph.

The innovative transmission has four drive modes: "C" (Controlled Efficiency), "S" (Sport), "S+" (Sport plus) and "M" (Manual) designed to provide customized shift control for maximum driving pleasure. An enhanced version of the AMG sports suspension enables drivers to, at a push of a button, select between "Sport" and "Comfort" for better handling and dynamics. A speed-sensitive steering set-up has also been installed that automatically adjusts to the suspension settings. An AMG rear axle differential lock and performance suspension are optional.

New AMG high-performance compound brakes and an electric parking brake come as standard, while options include ceramic versions with red calipers. Exterior upgrades include 19-inch Five-twin-spoke AMG alloys in high-gloss titanium grey, a new body kit, AMG-specific LED daytime running lights, an AMG radiator grille, a rear spoiler lip, and a diffuser-style rear apron with the two chromed twin tailpipes. A retractable hardtop transforms the coupe into a roadster in under twenty seconds, with a choice of glass roof or MAGIC SKY CONTROL panoramic roof.

The interior features AMG sports seats in Nappa leather, an AMG instrument cluster, carbon-fiber trim, ambient lighting, illuminated sills, AMG badges, and an AMG DRIVE UNIT. Optional extras include Active Parking Assist, a Bang & Olufsen sound system, and keyless-go package.