The GL550’s twin-turbo 429-horsepower 4.7-liter V8 takes it to 60 mph in a mere 5.5 seconds. It's mated to a seven-speed automatic that sends power to a full-time four-wheel drive system fitted with 21-inch all season tires. With a blistering 516 pound-feet of torque on tap, the GL550 has a tow rating of 7,500 pounds and all the power you need for passing and maneuvering. The Interactive Adaptive Variable Suspension pairs with a Vehicle Stability Program, stabilizer bars and automatic load leveling to give this large SUV a remarkably stable drive.
In expected Mercedes-Benz tradition, the vehicle comes well-equipped as standard with adaptive bi-xenon headlights that level automatically; a sunroof; heated mirrors; rain sensors; plenty of exterior and interior lighting; multi-adjustable leather seats with driver massage and cooling/heating for the front seats; wood trim; a 610-watt, LOGIC7 Surround Sound 14 speaker radio with satellite and MP3; and telematics with internet, vehicle tracking and roadside assistance. A Parktronic parking assist system makes parking this full size tank an effortless, error-free experience.
Optional Packages worth considering are:
- On/Off-Road Package with a six program selector including Auto, Sport, Snow, Trailer and two off-road modes that adjust height, suspension and drive according to mode.
- Driver Assistance Package with DISTRONIC PLUS and PRE-SAFE Brakes that adapt your speed to traffic flow ahead, more active blind spot and lane-keeping monitoring.
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The On/Off Road Package is worth the upgrade for $2,000. The six-program driving mode and additional undercarriage protection make the model even more versatile and rugged while enhancing the SUV’s natural all-road capabilities. And with an SUV of this caliber, the Panorama Roof should come as standard but doesn’t. Add it for an additional $1,100.