Mercedes-Benz M-Class W166
Efficiency meets luxury in the downsized diesel pioneer of the W166 generation.
- Power
- 204 bhp
- 0–60 mph
- 8.7 s
- Top speed
- 130 mph
- Est. value
- $9k–$14k
About the Mercedes-Benz M-Class W166
The W166-generation Mercedes-Benz ML 250 BlueTEC represented a significant shift for the M-Class, replacing the previous entry-level V6 diesel with a highly efficient 2.1-litre four-cylinder unit. Despite the smaller displacement, the twin-turbocharged OM651 engine delivered a substantial 500 Nm of torque, ensuring the heavy SUV remained capable for towing and motorway cruising. This generation introduced a much higher standard of interior refinement, borrowing design cues and materials from the S-Class to distance itself from its more utilitarian predecessors. It remains a popular choice for those seeking a premium family hauler with lower running costs, though it lacks the effortless smoothness of the larger V6 and V8 variants.
Mercedes-Benz M-Class W166 specs
The Mercedes-Benz M-Class W166 produces 204 bhp (152 kW) and 500 Nm (369 lb-ft) of torque. It reaches 60 mph in 8.7 seconds and has a top speed of 130 mph (210 km/h).
| Make | Mercedes-Benz |
|---|---|
| Model | M-Class |
| Generation | W166 |
| Trim | ML 250 BlueTEC |
| Years | 2011–2015 |
| Type | SUV |
| Body style | SUV |
| Country | Germany |
| Engine | 2.1-litre twin-turbocharged inline-4 diesel |
|---|---|
| Displacement | 2,143 cc (2.1 litres) |
| Induction | Twin-turbocharged |
| Power | 204 bhp (152 kW) at 3,800 rpm |
| Torque | 500 Nm (369 lb-ft) |
| Redline | 5,000 rpm |
| 0–60 mph | 8.7 s |
| Top speed | 130 mph (210 km/h) |
| Transmission | 7-speed automatic |
| Drivetrain | All-wheel drive |
| Weight | 2,150 kg (4,740 lb) |
| Power-to-weight | 95 bhp per tonne |
Typical figures for the standard car; options, markets and model years vary. Where our specs come from
How much is a Mercedes-Benz M-Class W166 worth?
A typical Mercedes-Benz M-Class W166 is estimated to be worth $8,500 – $14,000 (about £6,300 – £10,000).
Values are directional estimates for a typical example, not appraisals. Condition, mileage, history and specification all change what a real car is worth. Pound figures use the exchange rate of 3 November 2026. How values are estimated
Mercedes-Benz M-Class W166 rarity in CarSpot
The Mercedes-Benz M-Class W166 is a Common card in CarSpot, with a rarity score of 0 out of 100. Everyday cars you can spot on almost any street. A Common card is worth 10 XP.
Each model's tier starts from a 0–100 score based on its value plus its power or production numbers. Once enough players have spotted a model, how often it is spotted can move it up or down one tier. How CarSpot rarity works
Rarity is a collectible game mechanic, not an assessment of real-world scarcity or value.
Mercedes-Benz M-Class W166 fun facts
- The ML 250 BlueTEC was the first M-Class to be offered with a four-cylinder engine, a move driven by tightening European emission standards.
- Despite its upright SUV profile, the W166 achieved a remarkably low drag coefficient of 0.32, which was class-leading at the time of its launch.
- In 2015, as part of Mercedes-Benz's nomenclature overhaul, the W166 M-Class was rebranded as the GLE-Class.
