Technical Specifications
| Brand | Mercedes-Benz |
| Model | GLK |
| Generation | GLK (X204) |
| Type | GLK 250 CDI BlueEFFICIENCY (204 Hp) 4MATIC 7G-TRONIC PLUS |
| Start of production | 2011 |
| End of production | 2012 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 7.1-7.4 l/100 km (33.1 – 31.8 US mpg) |
| Fuel consumption (extra urban) | 5.5-5.9 l/100 km (42.8 – 39.9 US mpg) |
| Fuel consumption (combined) | 6.1-6.5 l/100 km (38.6 – 36.2 US mpg) |
| CO2 emissions | 159-168 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 7.9 sec |
| Acceleration 0 – 60 mph | 7.5 sec |
| Maximum speed | 210 km/h (130.49 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 8.8 kg/Hp |
| Weight-to-torque ratio | 3.6 kg/Nm |
| Power | 204 Hp @ 4200 rpm |
| Torque | 500 Nm @ 1600-1800 rpm (368.78 lb.-ft.) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 651.912 |
| 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 | BiTurbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Kerb Weight | 1805 kg (3979.34 lbs.) |
| Max. weight | 2450 kg (5401.33 lbs.) |
| Max load | 645 kg (1421.98 lbs.) |
| Trunk (boot) space (min) | 450 l (15.89 cu. ft.) |
| Trunk (boot) space (max) | 1550 l (54.74 cu. ft.) |
| Fuel tank capacity | 59 l (15.59 US gal | 12.98 UK gal) |
| Length | 4525 mm (178.15 in.) |
| Width | 1840 mm (72.44 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.) |
| Front overhang | 813 mm (32.01 in.) |
| Rear overhang | 957 mm (37.68 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 brakes | Ventilated discs, 330×32 mm |
| Rear brakes | Ventilated discs, 300×22 mm |
| Gearbox | 7 gears, automatic transmission G-TRONIC PLUS |
The Mercedes-Benz GLK 250 CDI BlueEFFICIENCY, produced from 2011 to 2012, was a diesel-powered variant of the X204 GLK-Class compact luxury SUV. Positioned as a fuel-efficient option within the GLK range, it offered a balance between performance and economy, appealing to buyers seeking a practical yet refined vehicle. This model played a significant role in Mercedes-Benz’s strategy to offer more efficient diesel options in the North American and European markets, leveraging the brand’s reputation for engineering and build quality in a growing segment.
Powertrain & Engine Architecture
The GLK 250 CDI BlueEFFICIENCY is powered by the OM 651.912 2.1-liter inline-four cylinder diesel engine. This engine is a sophisticated design incorporating common-rail direct injection, a variable geometry turbocharger, and an intercooler. The common-rail system, operating at very high pressures, ensures precise fuel delivery for optimal combustion efficiency. The turbocharger, working in conjunction with the intercooler, boosts power and torque while maintaining good fuel economy. A diesel particulate filter (DPF) and a Start & Stop system are also included to minimize emissions. The standard transmission is a 7G-TRONIC PLUS seven-speed automatic. This transmission is known for its smooth and efficient operation, contributing to the vehicle’s overall fuel economy. The gear ratios are optimized to deliver strong torque at lower engine speeds, enhancing drivability in typical driving situations.
Driving Characteristics
The GLK 250 CDI 4MATIC provides a comfortable and refined driving experience. With 204 horsepower and 368 lb-ft of torque, it offers adequate acceleration for daily use. The 0-60 mph time of approximately 7.5 seconds is respectable for a compact luxury SUV. The 7G-TRONIC PLUS transmission shifts smoothly and responsively, and the 4MATIC all-wheel-drive system provides excellent traction in various conditions. Compared to the GLK 350, which featured a V6 engine, the 250 CDI offered significantly better fuel economy but lacked the V6’s outright power. The lower horsepower meant overtaking required more planning, and the engine could feel stressed when fully loaded. However, the plentiful low-end torque made it a capable and comfortable cruiser, particularly on the highway.
Equipment & Trim Levels
The GLK 250 CDI BlueEFFICIENCY came standard with features like automatic climate control, power-adjustable front seats, a multi-function steering wheel, and a premium audio system. The typical interior upholstery was MB-Tex leatherette, with genuine leather available as an option. Popular optional extras included a panoramic sunroof, a navigation system, parking sensors, and a rearview camera. The interior design reflected Mercedes-Benz’s commitment to quality materials and a sophisticated layout. Trim levels were relatively straightforward, with most options offered as individual additions rather than being bundled into specific packages.
Chassis & Braking
The GLK 250 CDI utilized an independent suspension system, featuring McPherson struts at the front and a multi-link setup at the rear. This configuration provided a comfortable ride and good handling. Stabilizer bars were fitted to both axles to minimize body roll during cornering. The braking system consisted of ventilated disc brakes on all four wheels, providing ample stopping power. Anti-lock braking system (ABS) and electronic stability control (ESP) were standard safety features. The 4MATIC all-wheel-drive system intelligently distributed power between the front and rear axles as needed, enhancing traction and stability in various driving conditions.
Market Reception & Comparison
The GLK 250 CDI BlueEFFICIENCY was generally well-regarded by automotive critics. It was praised for its fuel efficiency, comfortable ride, and refined interior. Some reviewers noted that the engine could feel underpowered at times, especially when compared to the more powerful GLK 350. In terms of fuel economy, the 250 CDI significantly outperformed the GLK 350, making it an appealing choice for buyers prioritizing efficiency. Reliability was generally good, although diesel engines can be more complex and potentially more expensive to maintain than gasoline engines. The GLK 250 CDI competed with other compact luxury SUVs such as the Audi Q5, BMW X3, and Acura RDX.
Legacy
The GLK 250 CDI BlueEFFICIENCY represents an important step in Mercedes-Benz’s efforts to offer more fuel-efficient diesel options. The OM 651 engine family proved to be durable and reliable, and many examples are still in service today. In the used car market, the GLK 250 CDI is often sought after by buyers looking for a practical, fuel-efficient, and well-built luxury SUV. While maintenance costs for diesel engines can be higher, the long-term fuel savings and the vehicle’s overall durability can make it a worthwhile investment. The GLK was replaced by the GLC-Class in 2015, but the 250 CDI variant remains a popular choice for those seeking a capable and economical compact luxury SUV.
