A 4.6-liter, 335-horsepower V8 engine powers the 2007 Mercedes-Benz GL-Class, matched to a seven-speed automatic transmission that drives all four wheels through the company’s 4Matic 4WD system. The hardware roster also includes a four-wheel-independent suspension, speed-sensitive steering, and 18-inch alloy wheels wearing 265/60 all-season tires. An Airmatic air suspension and adaptive damping shocks are optional. The 2007 Mercedes-Benz GL-Class is rated to tow up to 7,500 pounds, and if history is any indicator, a Mercedes-Benz GL63 AMG is likely arriving in showrooms for 2008 or 2009.