Used 2001 Mercedes-Benz M-Class ML55 AMG Review

Edmunds expert review

In spite of this year's improvements geared toward off-road use, the M-Class is still better suited for safe and luxurious transport in foul weather than it is for trail bashing.

What's new for 2001

The TeleAid emergency calling system is now standard on every M-Class model, and smart dual-stage front airbags know when to deploy with partial force or full force. All models also feature expanded off-road capabilities with new downhill traction control and a new crawling mode for very slow and steep off-roading. Finally, a new M-Class sport package debuts this year.

Vehicle overview

Since it's the M-Class' introduction, Mercedes has made constant improvements to it, upping the feature content and performance, improving its looks and addressing the build-quality issues that plagued early models.

The base ML320 is powered by a peppy 215-horsepower 3.2-liter V6 while the upscale ML430 offers an authoritative and advanced 4.3-liter V8 that makes 268 horsepower. The truly brutish AMG-designed ML55 manages 342 horsepower from its massaged 5.5-liter V8. All engines are mated to a driver-adaptive five-speed automatic with TouchShift control for manual shifting.

New this year is an expanded full-time four-wheel-drive system that offers 50/50 torque distribution through the M-Class' front and rear fully independent suspensions. A new downhill traction control system (no doubt inspired by BMW's Hill Descent Control available on that company's X5 SUV), which maintains a low vehicle speed when descending steep grades with loose footing, is accompanied by a new "two-foot" crawling mode that has the same effect as applying the brake while climbing a steep hill. This mode can be engaged when the M-Class is in low range and is traveling under 3 mph to maximize traction. Contributing to these new off-road maneuverability improvements, an active brake booster builds pressure assistance faster, allowing spinning wheels to be slowed with quicker response.

In addition to advanced drivetrain technology, safety features such as TeleAid, traction control, stability control, ABS, dual-stage "smart" airbags and 24-hour roadside assistance offer safety on par with Mercedes' best sedans. In fact, the M-Class is so crashworthy that the Insurance Institute of Highway Safety even rated it as the "Best Pick" in the SUV class in terms of occupant protection.

But don't buy this SUV just for safety reasons. The interior of the base ML320 features such niceties as leather and burl walnut trim, while the 430 model gets standard GPS navigation, 17-inch wheels and leather seats. A third-row seat can be had in either model, and a new sport package, with unique body cladding, integrated foglamps, a chrome exhaust tip and 17-inch alloy wheels, is available to curtail some of the ML's "minivan" look. If the sport package still isn't sporty enough, consider the ML55, which includes a powerful V8 engine, 18-inch wheels, a power dome hood and red brake calipers.

Blend these safety features with its solid performance on pavement and in the slippery stuff, along with the M's cavernous 80.2 cubic feet of maximum cargo space and long list of standard equipment, and the ingredients for a perfect luxury sport-ute are in place. But even with this year's drivetrain improvements, true off-road aficionados will want to shop elsewhere for wheels. The M-Class, despite its boxed frame and four-wheel drive, is much more suited to Chicago's Dan Ryan Expressway than scurrying across the Continental Divide.

Edmunds expert review process

This review was written by a member of Edmunds' editorial team of expert car reviewers. Our team drives every car you can buy. We put the vehicles through rigorous testing, evaluating how they drive and comparing them in detail to their competitors.

We're also regular people like you, so we pay attention to all the different ways people use their cars every day. We want to know if there's enough room for our families and our weekend gear and whether or not our favorite drink fits in the cupholder. Our editors want to help you make the best decision on a car that fits your life.