For 2007, the Mercedes-Benz SLR McLaren adds a new model, the 722 Edition, with even more power than its McLaren stablemate.

Both models use an AMG-built 5.4-litre V8 with belt-driven supercharger and dual intercoolers, but while the McLaren makes 617 hp, the 722 Edition produces an estimated 650 hp. Both use a five-speed AMG SpeedShift R five-speed automatic transmission that can be manually shifted via the shift lever or wheel-mounted buttons.

Features on the SLR McLaren include carbon-fibre composite body, staggered-width 19-inch turbine-style alloy wheels with performance tires, ceramic brake discs with eight-piston front and four-piston rear calipers, speed-activated rear spoiler, interconnected fuel tanks, tire pressure monitoring system, electronic braking system with self-drying brakes, dual automatic climate control, Bose sound system, leather interior, one-piece carbon-fibre seats, multi-function steering wheel, and aluminum pedals with rubber studs.

The 722 Edition adds more powerful front brakes with red-painted calipers and cross-drilled rotors, retuned and lowered suspension, weight-optimized flooring with exposed carbon, two-tone wheels, exclusive crystal grey paint, darkened taillight clusters, Alcantara and leather interior, cluster-integrated AMG race timer, black suede sport steering wheel, red seatbelts, and optimized aerodynamics. The 722 Edition has the McLaren’s standard CD changer and integrated telephone deleted, but they can be ordered at no extra charge.

Exclusive and expensive, the SLR McLaren is incredibly powerful and luxurious, but with a noisy, firm ride; expect the race-intended 722 Edition to be even more powerful, noisier and firmer, and with some of the luxury cut back. Both models are so elite that a single worker builds the engine, from the crankshaft to the wiring harness. No matter which model you select, chances are good you’ll be the only one on your block with one.

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