The Mercedes-Benz GLK 200 CDI BlueEFFICIENCY, produced from 2010 to 2011, was a key variant within the first generation (X204) of the GLK-Class compact luxury SUV. Positioned as an entry-level diesel option in many European markets, it offered a balance of fuel efficiency and practicality. This model aimed to attract buyers seeking the GLK’s styling and features with a more economical engine choice. While not officially sold in the United States during this generation, the GLK-Class as a whole represented Mercedes-Benz’s attempt to capture a growing segment of the market – the compact luxury crossover.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | GLK |
| Generation | GLK (X204) |
| Type (Engine) | GLK 200 CDI BlueEFFICIENCY (143 Hp) |
| Start of production | 2010 |
| End of production | 2011 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 7.2-7.5 l/100 km (32.7 – 31.4 US mpg) |
| Fuel consumption (extra urban) | 5.1-5.3 l/100 km (46.1 – 44.4 US mpg) |
| Fuel consumption (combined) | 5.8-6.1 l/100 km (40.6 – 38.6 US mpg) |
| CO2 emissions | 153-160 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 10.3 sec |
| Acceleration 0 – 62 mph | 10.3 sec |
| Acceleration 0 – 60 mph | 9.8 sec |
| Maximum speed | 195 km/h (121.17 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 12 kg/Hp |
| Weight-to-torque ratio | 4.9 kg/Nm |
| Power | 143 Hp @ 3200 rpm |
| Torque | 350 Nm @ 1200-2800 rpm (258.15 lb.-ft.) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 651.916 |
| Engine displacement | 2143 cm3 (130.77 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 83 mm (3.27 in.) |
| Piston Stroke | 99 mm (3.9 in.) |
| Compression ratio | 16.2:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Kerb Weight | 1715 kg (3780.93 lbs.) |
| Max. weight | 2385 kg (5258.02 lbs.) |
| Max load | 670 kg (1477.1 lbs.) |
| Trunk (boot) space – minimum | 450 l (15.89 cu. ft.) |
| Trunk (boot) space – maximum | 1550 l (54.74 cu. ft.) |
| Fuel tank capacity | 59 l (15.59 US gal | 12.98 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Permitted trailer load (braked) | 2000 kg (4409.25 lbs.) |
| Permitted trailer load (unbraked) | 750 kg (1653.47 lbs.) |
| Length | 4525 mm (178.15 in.) |
| Width | 1840 mm (72.44 in.) |
| Width including mirrors | 2016 mm (79.37 in.) |
| Height | 1689 mm (66.5 in.) |
| Wheelbase | 2755 mm (108.46 in.) |
| Front track | 1567 mm (61.69 in.) |
| Rear track | 1588 mm (62.52 in.) |
| Ride height (ground clearance) | 201 mm (7.91 in.) |
| Drag coefficient (Cd) | 0.34 |
| Minimum turning circle | 11.5 m (37.73 ft.) |
| Front suspension | Independent, McPherson with coil spring and anti-roll bar |
| Rear suspension | Independent multi-link with stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic |
| Front tires | 235/60 R17; 235/50 R19; 235/45 R20 |
| Rear tires | 235/60 R17; 235/50 R19; 255/45 R19; 255/40 R20 |
INTRODUCTION
The GLK 200 CDI BlueEFFICIENCY debuted in 2010 as part of the X204 GLK-Class refresh. It was designed to appeal to European buyers prioritizing fuel economy and lower running costs within the compact SUV segment. The “BlueEFFICIENCY” designation signified Mercedes-Benz’s efforts to improve fuel consumption through various technologies. This variant occupied the lower end of the GLK lineup, offering a more accessible price point compared to the more powerful petrol (gasoline) engines and higher-trim diesel models. It was primarily sold in Europe and other markets where diesel fuel was prevalent and incentivized.
Powertrain & Engine Architecture
At the heart of the GLK 200 CDI BlueEFFICIENCY lies the OM 651.916, a 2.1-liter inline-four cylinder diesel engine. This engine is a cornerstone of Mercedes-Benz’s diesel offerings, known for its durability and efficiency. It features a common rail direct injection system, delivering fuel at extremely high pressure for optimized combustion. The engine utilizes a variable geometry turbocharger (VGT) with an intercooler to boost power and torque while minimizing turbo lag. The valvetrain employs a double overhead camshaft (DOHC) design with four valves per cylinder, enhancing breathing and overall engine performance. The engine produces 143 horsepower at 3200 rpm and 350 Nm (258 lb-ft) of torque between 1200 and 2800 rpm. The GLK 200 CDI was typically paired with a 6-speed automatic transmission, although a 6-speed manual was also available in some markets. The automatic transmission was designed for smooth shifts and efficient power delivery, prioritizing fuel economy over outright performance.
Driving Characteristics
The GLK 200 CDI BlueEFFICIENCY’s driving experience is characterized by its relaxed and efficient nature. Acceleration from 0-100 km/h (0-62 mph) takes around 10.3 seconds, which is adequate for everyday driving but doesn’t offer particularly sporty performance. The engine’s strong low-end torque makes it well-suited for navigating city streets and overtaking on highways, despite the relatively modest horsepower figure. The automatic transmission is programmed with taller gear ratios to maximize fuel efficiency, which can sometimes result in the engine feeling slightly strained when climbing hills or accelerating quickly. Compared to the more powerful GLK 280 or GLK 320 CDI models, the 200 CDI offers a noticeably less energetic driving experience. However, it excels in fuel economy, achieving combined fuel consumption figures of 5.8-6.1 liters per 100 kilometers (40.6-38.6 US mpg).
Equipment & Trim Levels
The GLK 200 CDI BlueEFFICIENCY typically came equipped with a respectable level of standard features. These included automatic climate control, a multi-function steering wheel, power windows and mirrors, and a basic audio system. Interior upholstery was generally cloth, although leather options were available as upgrades. Common optional extras included a sunroof, navigation system, parking sensors, and upgraded audio systems. The “BlueEFFICIENCY” package itself included features aimed at reducing fuel consumption, such as optimized aerodynamics and low-rolling-resistance tires. Trim levels varied depending on the market, but generally followed a progression from base models to more luxurious variants with additional features and cosmetic enhancements.
Chassis & Braking
The GLK 200 CDI BlueEFFICIENCY utilizes a robust chassis designed to provide a comfortable and controlled ride. The front suspension features independent McPherson struts with coil springs and an anti-roll bar, while the rear suspension employs an independent multi-link setup with a stabilizer bar. This configuration provides a good balance between ride comfort and handling. Braking duties are handled by ventilated discs at the front and solid discs at the rear, equipped with ABS (Anti-lock Braking System) for enhanced safety. The hydraulic power steering provides precise and responsive steering feel. The GLK’s relatively high curb weight (1715 kg / 3780.93 lbs) contributes to its stable handling characteristics.
Market Reception & Comparison
The GLK 200 CDI BlueEFFICIENCY was generally well-received by automotive critics in Europe, who praised its fuel efficiency and practicality. However, some reviewers noted that its performance was somewhat underwhelming compared to its more powerful siblings. Compared to the GLK 280 petrol variant, the 200 CDI offered significantly better fuel economy but lacked the same level of acceleration. The GLK 320 CDI, with its larger and more powerful diesel engine, provided a more engaging driving experience but at the cost of increased fuel consumption and emissions. The 200 CDI’s target audience was primarily buyers seeking a fuel-efficient and comfortable SUV for everyday use, rather than those prioritizing sporty performance.
Legacy
The OM 651 engine family, including the 2.1-liter unit found in the GLK 200 CDI, has proven to be remarkably durable and reliable. With proper maintenance, these engines can easily exceed 200,000 kilometers (124,000 miles) without major issues. On the used car market, the GLK 200 CDI BlueEFFICIENCY represents a relatively affordable entry point into the Mercedes-Benz SUV range. Its fuel efficiency and reputation for reliability make it an attractive option for buyers seeking a practical and economical luxury vehicle. However, potential buyers should be aware of the potential for diesel particulate filter (DPF) issues, particularly if the vehicle has primarily been used for short trips. Overall, the GLK 200 CDI BlueEFFICIENCY remains a solid and dependable choice in the used car market.

