Mercedes-Benz’s conventionally styled luxury sport utility vehicle gained a larger 3.7-liter V-6 engine midway through the 2003 model year, which prompted the automaker to change the designation of the ML320 model to ML350. For 2004, a DVD-based navigation system is a factory option for the ML350; it is priced under $1,000 and comes as standard equipment on the ML500. An Inspiration Edition remains available until late fall of 2003, but the high-performance ML55 AMG model has been dropped.

Built in Alabama, the ML350 carries a 232-horsepower V-6 engine, while the ML500 packs a 288-hp, 5.0-liter V-8. Both models have permanently engaged four-wheel drive with a Low range. The five-speed-automatic transmission features Touch Shift manual-gear selection. Traction control works when going downhill and while accelerating. Mercedes-Benz’s Tele Aid emergency communication system can summon help or track a stolen vehicle. M-Class competitors include the Acura MDX, Ford Explorer and redesigned Lexus RX 330. The German automaker also offers the utilitarian-looking and more expensive G-Class SUV.