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2015 Mercedes-Benz M-Class Review

The 2015 Mercedes-Benz M-Class ranks in the middle of the luxury midsize SUV class. It has high safety scores and excellent passenger and cargo room. However, the base model’s engine delivers so-so power, and total ownership costs are a little high for the class.

Pros & Cons

  • Roomy seating
  • Good amount of cargo space
  • Upscale interior
  • Rivals are more athletic
  • Mediocre acceleration with base engine
  • Higher total ownership costs than competitors

New for 2015

  • ML 250 BlueTec and ML 400 trims added to the lineup
  • Last model year of production




Critics' Rating: 8.5
Performance: 7.6
Interior: 8.6
Total Cost of Ownership: 7.5
Safety: 10.0
J.D. Power Ratings Logo

2015 Mercedes-Benz M-Class Overview

Is the 2015 Mercedes-Benz M-Class a Good Used SUV?

The 2015 M-Class is a decent two-row luxury midsize SUV. It boasts a posh interior and a comfortable ride. There’s also a nice engine lineup, ranging from a fuel-efficient diesel engine to a heart-stopping V6. Inside, the M-Class is attractive, and it features user-friendly tech and provides a lot of space for people and gear alike.

Why You Can Trust Us

We’ve researched 34 Mercedes-Benz M-Class reviews, as well as hard data points like reliability ratings and cost of ownership estimates, to help you Mercedes-Benz the best car-buying decision possible.

U.S. News & World Report has been ranking cars since 2007, and our team has more than 75 years of automotive industry experience combined. While we’re passionate about cars, we’re even more committed to providing helpful consumer advice. To ensure our reviews remain impartial, we refuse expensive gifts and trips from car companies, and an outside team handles the advertising on our site.

How Much Is the 2015 Mercedes-Benz M-Class?

Our site has almost 900 listings for the 2015 M-Class, with an average price of around $32,600. Prices range from about $26,000 to around $39,000, and they vary depending on the vehicle's features, mileage, condition, and location.

See the Best Used Car Deals »

How Much Does the 2015 Mercedes-Benz M-Class Cost to Own?

Estimated expenses for gas, insurance, repair, and maintenance for the 2015 M-Class tend to be slightly more than its competitors’. You can expect to pay around $35,200 over five years for these expenses. For comparison, a 2015 BMW X5’s projected five-year costs are around $1,400 less than the M-Class’, and the 2015 Audi Q7’s costs are about $550 less.

Is It Better to Buy a Used or New M-Class?

The 2015 M-Class marks the model's final year. It was replaced by the 2016 GLE. There are several notable differences between the M-Class and the GLE. The 2019 GLE ranges in price from $55,700 to more than $110,000, while a 2015 M-Class will run you between $26,000 and $39,000. The new GLE is available with features that you can't get in an M-Class, such as Android Auto and Apple CarPlay. A rearview camera is also standard in the new GLE. A used 2015 M-Class and a 2019 GLE have similar driving dynamics, though they have different powertrain options. You can get a 2015 M-Class with a diesel engine, but the GLE's high-performance AMG models are more powerful than what you'll find under the hood of the 2015 ML 63 AMG.

Read about the new Mercedes-Benz GLE »

There are no new luxury midsize SUVs that are comparable in price to a used 2015 M-Class. However, you can find a new midsize SUV like the well-rounded Toyota Highlander. It starts at roughly $31,000 and comes with a quality cabin and lots of standard driver assistance features. The Highlander also has three rows of seats and more cargo space than the M-Class. This Toyota is a good value and worth considering for anyone shopping for a handsome, practical daily driver.

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Which Model Year of the Mercedes-Benz M-Class Is Best?

2015 marks the final year of the M-Class’ production; it was replaced by the 2016 Mercedes-Benz GLE. The M-Class saw few major changes after it was redesigned for 2012, and you can probably save some money with an older model. Still, there were some notable improvements for the 2015 model year. The 2014 ML 350 BlueTec and ML 550 trims were replaced with the 2015 ML 250 BlueTec and ML 400. Each comes with an engine that is less powerful but more fuel-efficient than the outgoing models’ engines.     

Compare the 2013, 2014, and 2015 M-Class »

How Reliable Is the 2015 Mercedes-Benz M-Class?

The 2015 Mercedes-Benz M-Class has a reliability rating of three out of five from J.D. Power, which is slightly below average for the class but about average for the industry.

Read more about M-Class reliability »

2015 Mercedes-Benz M-Class Recalls

At the time of writing, several recalls apply to the 2015 M-Class. A couple of recalls involve various oil leaks that can increase the risk of a fire. Another recall covers axle bolts that may fracture, resulting in unstable handling. The right-side rear seat-belt bolt was installed improperly, so it may not adequately protect the passenger in the event of a crash. Be sure that a Mercedes-Benz dealer has addressed these issues before you buy a used 2015 M-Class.

See more information on Mercedes-Benz M-Class safety recalls »

Which Used Mercedes-Benz M-Class Model Is Right for Me?

The 2015 Mercedes-Benz M-Class is available in four trims: ML 350, ML 250 BlueTec, ML 400, and the performance-oriented ML 63 AMG. Each has a different powertrain and features list.

We recommend the ML 400 model for most shoppers. This trim boasts a muscular twin-turbocharged V6 engine and all-wheel drive. It also has plenty of features, including leather upholstery, a rearview camera, blind spot monitoring, lane departure warning, a Harman Kardon sound system, navigation, and voice recognition.

See 2015 Mercedes-Benz M-Class trims and specs »

What Does Mercedes-Benz's Certified Pre-Owned Warranty Cover?

Mercedes-Benz offers a certified pre-owned program for vehicles six years old or less and with fewer than 75,000 miles. Eligibility is determined by the vehicle’s initial sale date. Mercedes-Benz certified pre-owned vehicles come with the balance of the original four-year/50,000-mile new-car warranty, plus an additional one-year/unlimited-mileage warranty. This warranty can be renewed for a fee. If the new-car warranty has expired, you’ll receive the one-year warranty with unlimited mileage. Every Mercedes-Benz CPO vehicle must pass a 165-point inspection.

If you’re unsatisfied with your CPO vehicle, Mercedes’ Exchange Privilege program allows you to exchange it for another CPO vehicle of equal or lesser value within seven days or 500 miles. Additional benefits like towing and 24-hour roadside assistance may be available, so read the Mercedes-Benz warranty page carefully.

Among luxury car manufacturers, Mercedes-Benz’s CPO program is about average. It’s better than BMW’s but not as robust as Jaguar’s or Lexus’, according to our analysis.

See the best CPO programs »

How Safe Is the M-Class?

The 2015 M-Class has high safety scores for the class. It earned the highest possible score of Good in all Insurance Institute for Highway Safety crash tests and was named a 2015 IIHS Top Safety Pick+, which is the institute’s highest accolade. The National Highway Traffic Safety Administration gave the M-Class an overall rating of five out of five stars, with five stars in the frontal and side crash tests and four stars in the rollover test.

A forward collision warning system is the only standard driver assistance feature in the 2015 M-Class. Available technologies include a rearview camera, front and rear parking sensors, adaptive cruise control, automatic emergency braking, lane departure warning, lane keep assist, blind spot monitoring, driver drowsiness alert, adaptive headlights, a surround-view parking camera, and a semiautonomous parking system. 

See M-Class safety scores »

2015 Mercedes-Benz M-Class Versus the Competition

Which Is Better: 2015 Mercedes-Benz M-Class or 2015 BMW X5?

The 2015 BMW X5 is one of the best choices in the luxury midsize SUV class, especially if you value performance. It has a lineup of four powerful engines and delivers athletic, sporty handling without sacrificing ride comfort. The X5’s interior quality meets BMW's lofty standards, and you may even find a used model with a third row for extra seating space. Both SUVs have commendable safety scores. The X5 has a slightly higher average price than the M-Class, but the BMW is still the better buy.

Which Is Better: 2015 Mercedes-Benz M-Class or 2015 Audi Q7?

The 2015 Audi Q7 has a terrible reliability rating, which pulls it toward the bottom of our luxury midsize SUV rankings. Unfortunately, it doesn’t impress in other areas either. The Q7 has seven seats, but the third row is small and only suitable for children. The two-row M-Class seats five and has a higher maximum cargo capacity than the Q7. These rival SUVs have decent handling overall, but neither is great in that regard. There's little incentive to go with either one if you're looking for a fun-to-drive vehicle. The Q7 also costs a bit more than the M-Class. The Mercedes is the clear winner in this matchup.

Compare the M-Class, X5, and Q7 »

2015 M-Class Performance

How Does the 2015 Mercedes-Benz M-Class Drive?

The 2015 Mercedes M-Class is available with four powertrains that range from a 200-horsepower four-cylinder diesel engine to a 518-horsepower twin-turbocharged V8 in the AMG model. All engines come with a seven-speed automatic transmission. Rear-wheel drive is standard with the base Mercedes-Benz M-Class ML 350 model, and all other models have 4Matic all-wheel drive.

The base ML 350 delivers decent power and acceleration for daily driving, but the twin-turbo V6 in the ML 400 is more responsive. Although the diesel M-Class makes much less horsepower, its torque gets you moving quickly. The performance-oriented AMG model, in comparison, could knock your socks off with its power and acceleration. However, driving dynamics in the M-Class are focused on comfort rather than performance. Handling isn't particularly agile, and the steering can feel light, but you'll be treated to a mostly soft, comfortable ride. 

Does the 2015 Mercedes-Benz M-Class Get Good Gas Mileage?

The 2015 M-Class gets its best fuel economy ratings with the BlueTec diesel engine, returning 22 mpg in the city and 29 mpg on the highway. Those figures are above average for the class. The standard ML 350 with its V6 returns 18/23 mpg city/highway, while the ML 400 loses 1 mpg highway. The ML 63 AMG gets a measly 13/17 mpg. 

Read more about M-Class performance »

2015 M-Class Interior

How Many People Does the 2015 M-Class Seat?

The 2015 Mercedes-Benz M-Class is a two-row SUV that seats five. MB-Tex synthetic leather upholstery and heated, eight-way power-adjustable front seats come standard. Other models may include genuine leather upholstery, a 14-way power-adjustable driver's seat, ventilated front seats, and multicontour front seats with massage settings. 

The M-Class provides good passenger accommodations throughout. Up front, the comfortable, supportive seats provide a commanding view of the road. With the SUV’s excellent rear legroom, even taller passengers experience a pleasant ride. The rear seats also recline for added comfort.

How Many Car Seats Fit in the 2015 Mercedes-Benz M-Class?

The M-Class has two complete sets of LATCH car-seat connections on the rear outboard seats and a dedicated tether anchor for the middle seat. The lower anchors are exposed, housed in plastic cutouts of the seat cushions. That makes them easy to access and attach the car-seat straps to.

2015 Mercedes-Benz M-Class Features

All M-Class models feature the Mercedes COMAND infotainment system, which eschews touch-screen functionality in lieu of a physical control knob on the center console. It's easy enough to use, and other buttons on the dashboard provide a shortcut for common functions.

Notable standard features include dual-zone automatic climate control, HD Radio, and access to the mbrace telematics system. Available amenities include a panoramic roof, tri-zone automatic climate control, a heated steering wheel, proximity key entry, navigation, voice recognition, satellite radio, a rear-seat entertainment system, and either a Harman Kardon or a Bang & Olufsen premium sound system. 

See 2015 Mercedes-Benz M-Class specs »

Read more about M-Class interior »

2015 Mercedes-Benz M-Class Dimensions

Mercedes-Benz M-Class Cargo Space

The 2015 Mercedes M-Class has 38.2 cubic feet of cargo space behind its back seat and a maximum of 80.3 cubic feet with the second row folded down. Those amounts are high for the class. A power liftgate is standard.

2015 M-Class Length and Weight

The M-Class is 15.8 feet long. Its curb weight ranges from 4,652 to 5,238 pounds.

Where Was the 2015 Mercedes-Benz M-Class Built?

Mercedes built the 2015 M-Class in Alabama.

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