The Mercedes-Benz GLK 220 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 aimed to balance practicality, comfort, and running costs. This model was primarily marketed in Europe and other regions where diesel engines were favored, offering a compelling alternative to gasoline-powered counterparts. It represented Mercedes-Benz’s effort to incorporate fuel-saving technologies like Start & Stop functionality into their growing SUV lineup.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | GLK |
| Generation | GLK (X204) |
| Type (Engine) | GLK 220 CDI BlueEFFICIENCY (170 Hp) Start & Stop |
| Start of production | 2011 |
| End of production | 2012 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (economy) – urban (NEDC) | 6.9-7.4 l/100 km (34.1 – 31.8 US mpg, 40.9 – 38.2 UK mpg, 14.5 – 13.5 km/l) |
| Fuel consumption (economy) – extra urban (NEDC) | 5-5.3 l/100 km (47 – 44.4 US mpg, 56.5 – 53.3 UK mpg, 20 – 18.9 km/l) |
| Fuel consumption (economy) – combined (NEDC) | 5.7-6.1 l/100 km (41.3 – 38.6 US mpg, 49.6 – 46.3 UK mpg, 17.5 – 16.4 km/l) |
| CO2 emissions (NEDC) | 149-159 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 8.5 sec |
| Acceleration 0 – 62 mph | 8.5 sec |
| Acceleration 0 – 60 mph | 8.1 sec |
| Maximum speed | 205 km/h (127.38 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 10.3 kg/Hp, 97.1 Hp/tonne |
| Weight-to-torque ratio | 4.4 kg/Nm, 228.6 Nm/tonne |
| Power | 170 Hp @ 3200-4800 rpm |
| Power per litre | 79.3 Hp/l |
| Torque | 400 Nm @ 1400-2800 rpm (295.02 lb.-ft. @ 1400-2800 rpm) |
| 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 | BiTurbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Kerb Weight | 1750 kg (3858.09 lbs.) |
| Max. weight | 2400 kg (5291.09 lbs.) |
| Max load | 650 kg (1433 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 with brakes (12%) | 2000 kg (4409.25 lbs.) |
| Permitted trailer load without brakes | 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 (Back) 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 (turning diameter) | 11.5 m (37.73 ft.) |
| Approach angle | 23° |
| Departure angle | 25° |
| Ramp-over (brakeover) angle | 19° |
| Climb angle | 35° |
| Wading depth | 300 mm (11.81 in.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 6 gears, manual transmission |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs, 330×32 mm |
| Rear brakes | Ventilated discs, 300×22 mm |
Powertrain & Engine Architecture
The GLK 220 CDI BlueEFFICIENCY was powered by the OM 651.916, a 2.1-liter inline-four cylinder diesel engine. This engine was a mainstay in the Mercedes-Benz lineup, known for its robust construction and efficiency. It featured common-rail direct injection, delivering fuel at extremely high pressure for optimized combustion. The engine employed a variable geometry turbocharger and an intercooler to enhance power and torque across a broad rev range. The ‘BlueEFFICIENCY’ designation indicated the inclusion of fuel-saving technologies, most notably the Start & Stop system, which automatically shut off the engine when the vehicle was stationary, reducing idle fuel consumption. The engine’s DOHC valvetrain, with four valves per cylinder, further contributed to its performance and efficiency. The 6-speed manual transmission was standard, providing a balance between fuel economy and driver engagement.
Driving Characteristics
The 170 hp and 400 Nm (295 lb-ft) of torque delivered by the OM 651 engine provided adequate, though not exhilarating, performance for the GLK. Acceleration from 0-60 mph took around 8.1 seconds. The engine’s strong low-end torque made it well-suited for everyday driving and overtaking maneuvers. Compared to higher-output GLK variants, such as the GLK 350, the 220 CDI felt less responsive, particularly at higher speeds. The manual transmission offered precise shifts, but the gear ratios were tuned for fuel economy rather than outright performance. The overall driving experience was comfortable and refined, typical of Mercedes-Benz vehicles, but lacked the sporty character of some competitors.
Equipment & Trim Levels
The GLK 220 CDI BlueEFFICIENCY typically came standard with features such as automatic climate control, a multi-function steering wheel, power windows and mirrors, and an audio system with a CD player. Upholstery was generally cloth, though leather options were available. Optional extras included a sunroof, navigation system, parking sensors, and upgraded audio systems. The trim level was generally considered entry-level to mid-range within the GLK lineup, offering a good balance of features and affordability. The focus was on providing a practical and well-equipped vehicle without the premium features found in higher-spec models.
Chassis & Braking
The GLK 220 CDI utilized an independent suspension system, with McPherson struts at the front and a multi-link setup at the rear. This configuration provided a comfortable ride and good handling characteristics. Stabilizer bars were fitted to both axles to reduce 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) was standard, enhancing safety and control. The suspension was tuned to prioritize comfort over sporty handling, making it well-suited for everyday driving conditions.
Market Reception & Comparison
The GLK 220 CDI BlueEFFICIENCY was generally well-received by automotive critics for its fuel efficiency and practicality. It offered a compelling alternative to gasoline-powered SUVs, particularly in markets where diesel fuel was readily available and affordable. Compared to the GLK 350, the 220 CDI offered significantly better fuel economy, but at the expense of performance. The 220 CDI also provided a more affordable entry point into the GLK range. Reliability was generally good, with the OM 651 engine proving to be a durable and long-lasting unit. However, some owners reported issues with the diesel particulate filter (DPF) requiring occasional maintenance.
Legacy
The GLK 220 CDI BlueEFFICIENCY remains a popular choice in the used car market, particularly for buyers seeking a fuel-efficient and reliable compact SUV. The OM 651 engine is known for its longevity, and with proper maintenance, it can provide many years of trouble-free service. The Start & Stop system, while contributing to fuel savings, has been known to require occasional maintenance. Overall, the GLK 220 CDI BlueEFFICIENCY represents a well-rounded and practical vehicle that continues to offer good value for money.
