Mercedes-Benz M-Class Research & Reviews

Overview & Reviews

Average Score

4.19/5 Average
1,144 Total Reviews
Model Overview:

While Mercedes-Benz will always be a quintessentially German automaker, its M-Class SUV has always been an American at heart. To begin with, it's built in Alabama and has been since it first burst onto the scene as one of the first luxury SUVs. The U.S. of A is also the M's primary market, as its sizable dimensions and mostly thirsty engines play much better in Frankfort, Kentucky, than they do back in Frankfurt, Germany.

Regardless of its origins, however, each generation of the Mercedes-Benz M-Class has been better than the last. This is especially true of the second generation, which replaced the original model that soldiered on through eight years of subpar reliability and build quality. As such, used shoppers are urged to consider the M-Class from 2006 and later. If you're interested in a newer model, however, the latest, third-generation M-Class is a subtle evolution of the previous one, upping the ante with even more power and features.

Although it's undeniably a solid choice for a midsize luxury SUV, there are many worthwhile and less expensive competitors in the premium SUV segment. As such, it's certainly worth a look around before you settle on this Germanic American.

Current Mercedes-Benz M-Class
The Mercedes-Benz M-Class midsize luxury SUV's exterior styling strikes a balance between traditional M-Class cues and the latest ones from the Mercedes-Benz line. As always with a Mercedes, however, it's the quality of construction and all-around feeling of solidity that make it stand out. Other key strengths include its diverse engine lineup, comfortable seating and excellent brakes. With only five seats, however, it's less family-friendly than some rivals that offer third-row seating, and its price can be considered quite expensive.

The current M-Class is available in four different trim levels defined by their engine: ML250 Bluetec, ML350, ML400 and ML63 AMG. All come with a seven-speed automatic and all-wheel drive ("4Matic") except for the ML350, which can be had with either rear- or all-wheel drive.

Under the hood, the ML250 Bluetec has a turbocharged 2.1-liter four-cylinder diesel with 200 horsepower and a healthy 369 pound-feet of torque. The ML350 comes with a 3.5-liter V6 that produces 302 hp and 273 lb-ft. The ML400 features a turbocharged 3.0-liter V6 that produces 329 hp and 354 lb-ft.

A beast apart from the rest of the lineup is the powerhouse ML63 AMG that boasts a turbocharged 5.5-liter V8 with 518 hp and 516 lb-ft. Output is even greater -- at 550 hp and 560 lb-ft – if you opt for the AMG Performance package. The ML63 AMG also includes active roll stabilization, sportier suspension and steering tuning, 20-inch wheels, stronger brakes and special interior trim.

All M-Class models come similarly equipped with standard items like a sunroof, a power liftgate, heated power front seats, the latest COMAND electronics interface, Bluetooth and an emergency communications system. Optional highlights include a panoramic sunroof, keyless ignition and entry and "multicontour" front seats with massage functions. The On/Off Road package is notable for its adaptive air suspension (that improves both ride and handling qualities) as well as its two-speed transfer case, six-mode terrain selector and underbody skid plates.

In reviews, we've been impressed by the Mercedes-Benz M-Class' brisk performance and strong brakes. Handling is confident enough around corners, but the electrically assisted steering is a little too light in effort and lacks the subtle feedback we've come to expect from Mercedes-Benz. Interior quality is excellent, as expected, though the more rounded dash design reminds us more of the distantly related Jeep Grand Cherokee in its appearance than its squared-off Mercedes siblings. Overall, the M-Class is solid choice for a luxury SUV, but as there's so much to choose from in this segment, taking a look at a few different competitors as well is a good idea.

Used Mercedes-Benz M-Class Models
The current third-generation Mercedes-Benz M-Class debuted for 2012. The following year brought the optional On/Off Road package (replacing the Dynamic Handling package) as well as the massage functions for the front seats.

Note that these M-Class models differed from today's lineup in terms of a few engine offerings. Specifically, compared to the current ML250 Bluetec, the 2012-'14 ML350 Bluetec had a more powerful but less fuel-efficient turbodiesel V6 with 240 hp and 455 lb-ft. Also available those first three years was the ML550 with its 4.7-liter turbocharged V8 good for 402 hp and 443 lb-ft.

The previous, second-generation M-Class was produced from 2006-'11. Though similar in appearance to the current model, this M-Class differs in its engine choices, hydraulic versus electric steering, slightly lower-quality interior, and electronics controls that were less user-friendly than those of its contemporary competitors.

This generation was introduced with only two trims. The ML350 came with a 3.5-liter 268-hp V6, while the ML500 was powered by a 5.0-liter 302-hp V8. Both came similarly equipped.

The next year saw two additional models join the line. The ML320 CDI featured a relatively fuel-efficient diesel engine (215 hp, 398 lb-ft of torque) that didn't have California emissions approval, while the performance-oriented ML63 AMG came with a 6.2-liter V8 good for 503 hp. It also included a number of other performance and handling upgrades.

The ML550 replaced the ML500 for '08, boasting a 5.5-liter V8 good for a much healthier 382 hp. The following year saw the advent of the 50-state-compliant and renamed ML320 Bluetec, along with a base rear-wheel-drive ML350. Every ML also received a face-lift front and rear and an available updated COMAND system with Bluetooth phone connectivity.

For '10, the diesel model became the ML350 Bluetec and received a smidge more torque, but the bigger news was the addition of the ML450 Hybrid. Featuring a gasoline-electric hybrid system co-developed with BMW and General Motors, this ML featured a 3.5-liter V6, a pair of electric motors and an advanced transmission for a total of 335 hp. It achieved 22 mpg combined, which is good, but the cheaper Bluetec managed 21.

In reviews, our editors found the second-generation M-Class imparted that feeling of impenetrable solidity one expects from Mercedes-Benz. With the optional air suspension, the ride quality was impressively supple. Behind the wheel, one will find plenty of room and excellent support from the premium multicontour seats, as well as superb cabin materials. Major downsides included fussy electronic controls, pokey acceleration with the V6 engine, and higher ownership costs than some other luxury SUVs.

The first-generation Mercedes M-Class debuted in 1998 with the ML320, which was motivated by a 3.2-liter V6 with 215 hp. More standard equipment was added in 1999, as well as a more powerful and luxurious V8-equipped ML430 model. Detail improvements in 2000 included an interior freshening and optional third-row seating on all M-Class models, and in 2001 the TeleAid emergency calling system became standard across the lineup. These early ML models suffered from extensive quality-control issues that often resulted in expensive repair bills, so we wouldn't recommend them as used-car purchases.

The Mercedes-Benz M-Class was reworked and improved in 2002 with the modification of more than 1,100 parts and the substitution of the ML500 for the previous ML430, now featuring a 5.0-liter V8 packing 288 hp. Telltale signs included new bumpers, clear-lens headlights and restyled mirrors. In late 2003, the ML350 replaced the ML320, featuring a larger 3.5-liter 232-hp V6.

Mercedes was also first to market with a high-performance luxury SUV, offering the ML55 AMG from 2000-'03. Sold in limited numbers, this pricey ML had a 5.4-liter V8 good for 342 hp and 376 lb-ft of torque, along with a sport-tuned suspension.

User Reviews:

Showing 941 through 950 of 1,144.00
  • What An excellent package - 2005 Mercedes-Benz M-Class
    By -

    I recently purchased the ML-350 limited edition package and I truly love it. It is the most plush vehicle I have ever ridden in. Its new styling make it stand out and there is no car company with history and prestige like Mercedes-Benz. I truly love and would reccomend it to all.

  • Love it!!! - 2004 Mercedes-Benz M-Class
    By -

    Love this car...Im 16 and this is my second Benz after wrecking the first one. It has tons of room, very nice leather that NEVER wears. Sound system was great. A few problems with ball bearings and engine mounts, but inexpensive to fix and caused because the previous owner was apparently abusive. Great acceleration and handles great. So good off-road, can go everywhere all my friends with lifted trucks can. Feels really solid and was built with great quality. I would recommend this car to anyone who has kids or needs room for stuff but still wants performance and comfort.

  • Safest among SUVs - 2003 Mercedes-Benz M-Class
    By -

    Great SUV to drive around the town and on Hwy. Very easy to handle and park while fun to drive. ML350 has a good pick up and power delivery due to its higher and smoother torque delivery. It is kind of heavy (about 4800 lb) for its size but it is built solid and feels like a full size SUV. A bit tight in the back seat but still comfortable with proper air flow. If you get this car, try to get it with GPS and Bose audio system.

  • Yet another ML for me. - 2007 Mercedes-Benz M-Class
    By -

    My fourth ML, the first three were--simply put--mediocre. Finally, Mercedes made an SUV that is up-to-par with the Lexus and the BMW. It looks great, it runs great, it is just the right size, and the price isnt overwhelming. What more do you want? This baby is fun to drive and feels like a sports car. The overall quality has finally met Mercedes standards. No more parodizing the "USA Built Mercedes" excuse. Highly recommend this SUV. If you have had an ML in the past, well this is a whole new animal. If you have not, then you are definitely missing out!

  • Not a single problem with mine - 1998 Mercedes-Benz M-Class
    By -

    Call it dumb luck but Ive never had a problem with my M-class. I use it for my job and it is the most capable off- road vehicle we have ever had in our fleet. When you see it going through 2 1/2 to 3 feet of water and the door seals are so tight not a drop gets in you know the truck is built right.

  • Never buy anything else! - 2001 Mercedes-Benz M-Class
    By -

    I have owned many high end SUVs. The M Class is by far the best. Lets clear a few things up. It is a Mercedes. Dont expect to drive a year and never have any problems. That said, I have put 15,000 miles on this truck in less then a year and only had 1 minor problem. MB service is amazing, you never pay for anything. The truck handles like a sports car, no joke. I dumped a LR Disco for this and never looked back. The dealer is a pleasure to deal with. Dont buy this unless you are a real driver though. If you dont know what an apex is, if youre no interested in a 0-60 time, if you dont care about road holding index, this truck is not for you. You simply will not value it.

  • Needs an update - 2004 Mercedes-Benz M-Class
    By -

    The car is showing its age - limited features and dated functionality.

  • Not the best choice for a used SUV - 2002 Mercedes-Benz M-Class
    By -

    I have owned this car since new. It now has 110,000 miles and is still like new since almost every part has been replaced or repaired at least once. I have found the car is easy to work on and most parts are available on line or at local auto parts stores. There are also great web forums to help diagnose problems and instructions for repairs. There have been so many problems I could not begin to list them all, but one positive thing I can say it has never left me stranded. I would only recommend buying this car if you have the ability to do most of the repairs and maintenance yourself, otherwise this car is just a money pit that is best avoided

  • Great Car! - 2005 Mercedes-Benz M-Class
    By -

    We have really enjoyed our 350 ML. Great quality and reliabilty. First tires and brakes wore out quickly (25K) but second set lasted twice as long.

  • My Car - 1999 Mercedes-Benz M-Class
    By -

    This car had bumper to bumper warranty for four years. It has had no major repairs. It had the belts replaced two or more years ago.

Mercedes-Benz M-Class Reviews By Year:
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