2014 Mercedes-Benz M-Class: What's New, Specs & Features
Last updated August 4, 2026
For 2014, the M-Class makes automatic emergency braking standard across the lineup. Otherwise, it is largely unchanged from 2013, with the same engines, styling, cabin layout, and core technology.
About the 2014 Mercedes-Benz M-Class
3rd generation W166 M-Class (2012-2015), third model year before the 2016 facelift and GLE rename.
Mercedes-Benz positioned the M-Class as a midsize luxury SUV that mixes family-friendly space with a quiet, upscale cabin and a wide range of engines, from efficient diesel power to full AMG performance. The emphasis was less on sharp, sporty handling and more on long-distance comfort, strong safety engineering, solid build quality, and confident all-weather travel. For most buyers, the appeal was simple: it felt substantial, comfortable, and unmistakably premium while still being practical every day.
The 2014 M-Class ranges from the everyday V6-powered ML 350 to the diesel ML 350 BlueTEC, the 402-hp ML 550, and the 518-hp ML 63 AMG. Most versions emphasize a quiet cabin, heated power front seats, a power liftgate, and a 7-inch infotainment display, while the ML 63 AMG adds a hand-built V8, upgraded suspension and brakes, leather upholstery, navigation, and a surround-view camera.
What changed, by category
2014 Mercedes-Benz M-Class specs and features by trim
| Feature | |||||
|---|---|---|---|---|---|
| Engine | V6, 3.5 Liter | V6, 3.5 Liter | V8, Twin Turbo, 4.6 Liter | V8, Twin Turbo, 5.5 Liter | V6, Turbo Diesel, 3.0 Liter |
| Transmission | Auto, 7-Spd Manual Mode | Auto, 7-Spd Manual Mode | Auto, 7-Spd Manual Mode | Auto 7-Spd AMG SPEEDSHIFT | Auto, 7-Spd Manual Mode |
| Drivetrain | 2WD | AWD | AWD | AWD | AWD |
| Fuel Type | Gas | Gas | Gas | Gas | Diesel |
| MPG City | 18 mpg | 17 mpg | 14 mpg | 13 mpg | 20 mpg |
| MPG Highway | 24 mpg | 22 mpg | 19 mpg | 17 mpg | 28 mpg |
| Horsepower | 302 hp | 302 hp | 402 hp | 518 hp | 240 hp |
| Torque | 273 lb-ft | 273 lb-ft | 443 lb-ft | 516 lb-ft | 455 lb-ft |
| Max Towing | 6600 lb | 7200 lb | 7200 lb | 7200 lb | 7200 lb |
| Trunk/Cargo | 80.3 cu-ft | 80.3 cu-ft | 80.3 cu-ft | 80.3 cu-ft | 80.3 cu-ft |
| Rear Legroom | 38.4 in | 38.4 in | 38.4 in | 38.4 in | 38.4 in |
| Seats | 5 | 5 | 5 | 5 | 5 |
| Doors | 4 | 4 | 4 | 4 | 4 |
| Adaptive Cruise Control | |||||
| Adaptive Headlights | |||||
| Alarm System | |||||
| Automatic Emergency Braking | |||||
| Automatic High Beams | |||||
| Blindspot Sensors | |||||
| Lane Departure Warning | |||||
| Active Lane Keep Assistance | |||||
| Park Assist | |||||
| 360 Camera | |||||
| Alloy Wheels | |||||
| Auto-Dimming Exterior Mirrors | |||||
| HID Headlights | |||||
| Memory Exterior Mirrors | |||||
| Power Moonroof | |||||
| Panorama Moon Roof | |||||
| Power Folding Exterior Mirrors | |||||
| Roof Rails | |||||
| Side Steps | |||||
| Bluetooth | |||||
| Built-In Hard Drive | |||||
| Navigation System | |||||
| Premium Audio | |||||
| Smartphone Interface | |||||
| USB Ports | |||||
| 115V Power Outlet | |||||
| Aluminum Interior Trim | |||||
| Auto-Dimming Interior Mirror | |||||
| Dual-Zone Climate Control | |||||
| Heated Front Seats | |||||
| Heated Steering Wheel | |||||
| Interior Ambient Lighting | |||||
| Leather Seats | |||||
| Memory Driver's Seat | |||||
| Memory Front Seats | |||||
| Memory Steering Wheel | |||||
| Proximity Keyless Entry | |||||
| Remote Start | |||||
| Ventilated Front Seats | |||||
Frequently asked questions
What changed on the 2014 Mercedes-Benz M-Class?
Automatic emergency braking became standard across the 2014 M-Class lineup. The engines, styling, cabin layout, and core technology otherwise carry over from 2013.
Is the 2014 Mercedes-Benz M-Class significantly different from the 2013 model?
No, the 2014 M-Class is not significantly different from the 2013 model. Its main distinction is standard automatic emergency braking; the powertrains and most other equipment remain the same.
Does every 2014 Mercedes-Benz M-Class have all-wheel drive?
No. The ML 350 uses rear-wheel drive, while the ML 350 4MATIC, ML 350 BlueTEC 4MATIC, ML 550 4MATIC, and ML 63 AMG 4MATIC have all-wheel drive.
Which engines are in the 2014 Mercedes-Benz M-Class?
The 2014 M-Class lineup includes a 302-hp gas V6, a 240-hp turbo-diesel V6, a 402-hp twin-turbo V8, and a 518-hp AMG twin-turbo V8. All are paired with seven-speed automatic transmissions.
What is special about the 2014 ML 63 AMG?
The ML 63 AMG is the performance-focused 2014 M-Class. It has a hand-built 518-hp twin-turbo V8, upgraded air suspension and brakes, leather upholstery, navigation, surround-sound audio, parking sensors, and a surround-view camera.