The Mercedes-Benz GLK 220 BlueTEC 4MATIC, produced from June 2012 to May 2015, was a diesel-powered variant of the X204 GLK-Class compact luxury SUV. Positioned as a fuel-efficient and practical option within the GLK range, it offered a balance between performance and economy. This model was primarily aimed at European markets, where diesel engines held significant popularity, but was also available in limited quantities in North America. The facelifted X204 generation, introduced in 2012, brought styling updates and technological improvements to the GLK, enhancing its appeal in a competitive segment.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | GLK |
| Generation | GLK (X204, facelift 2012) |
| Type | GLK 220 BlueTEC (170 Hp) 4MATIC 7G-TRONIC PLUS |
| Start of production | June, 2012 |
| End of production | May, 2015 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 7-7.5 l/100 km (33.6 – 31.4 US mpg) |
| Fuel consumption (extra urban) | 5.5-5.8 l/100 km (42.8 – 40.6 US mpg) |
| Fuel consumption (combined) | 6.1-6.5 l/100 km (38.6 – 36.2 US mpg) |
| CO2 emissions | 159-169 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 8.8 sec |
| Acceleration 0 – 62 mph | 8.8 sec |
| Acceleration 0 – 60 mph | 8.4 sec |
| Maximum speed | 205 km/h (127.38 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 10.9 kg/Hp |
| Weight-to-torque ratio | 4.6 kg/Nm |
| Power | 170 Hp @ 3000-4200 rpm |
| Torque | 400 Nm @ 1400-2800 rpm (295.02 lb.-ft. @ 1400-2800 rpm) |
| 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 | Twin-Turbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Coolant capacity | 10 l (10.57 US qt | 8.8 UK qt) |
| Kerb Weight | 1850 kg (4078.55 lbs.) |
| Max. weight | 2500 kg (5511.56 lbs.) |
| Max load | 650 kg (1433 lbs.) |
| Trunk (boot) space – minimum | 420 l (14.83 cu. ft.) |
| Trunk (boot) space – maximum | 1500 l (52.97 cu. ft.) |
| Fuel tank capacity | 59 l (15.59 US gal | 12.98 UK gal) |
| AdBlue tank capacity | 27.5 l (7.26 US gal | 6.05 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Permitted trailer load with brakes (12%) | 2400 kg (5291.09 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 80 kg (176.37 lbs.) |
| Length | 4536 mm (178.58 in.) |
| Width | 1840 mm (72.44 in.) |
| Width including mirrors | 2016 mm (79.37 in.) |
| Height | 1669 mm (65.71 in.) |
| Wheelbase | 2755 mm (108.46 in.) |
| Front track | 1574 mm (61.97 in.) |
| Rear track | 1597 mm (62.87 in.) |
| Front overhang | 824 mm (32.44 in.) |
| Rear overhang | 957 mm (37.68 in.) |
| Ride height (ground clearance) | 188 mm (7.4 in.) |
| Drag coefficient (Cd) | 0.34 |
| Minimum turning circle | 11.65 m (38.22 ft.) |
| Approach angle | 22.8° |
| Departure angle | 24.6° |
| Climb angle | 35° |
| Wading depth | 300 mm (11.81 in.) |
| Drivetrain Architecture | All wheel drive (4×4). ICE drives all four wheels. |
| Number of gears | 7 |
| Gearbox type | Automatic transmission G-TRONIC PLUS |
| Front suspension | Independent, McPherson with coil spring and anti-roll bar |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs, 330 mm |
| Rear brakes | Ventilated discs, 300 mm |
| Steering type | Steering rack and pinion |
| Power steering | Electric |
| Front tires | 235/60 R17; 235/50 R19; 235/45 R20 |
| Rear tires | 235/60 R17; 255/55 R17; 235/50 R19; 255/45 R19; 255/40 R20 |
INTRODUCTION
The GLK 220 BlueTEC 4MATIC, introduced with the 2012 facelift of the X204 GLK-Class, represented Mercedes-Benz’s entry-level offering in the compact luxury SUV segment. Built on the W204 C-Class platform (internally designated as 204.0), the GLK aimed to attract buyers seeking a more manageable and fuel-efficient alternative to larger SUVs like the ML-Class. The “BlueTEC” designation signified the use of advanced diesel technology, including a particulate filter and selective catalytic reduction (SCR) system utilizing AdBlue, to minimize emissions and meet stringent Euro 6 standards. This variant was a key player in Mercedes-Benz’s strategy to offer a wider range of efficient and environmentally conscious vehicles.
Powertrain & Engine Architecture
At the heart of the GLK 220 BlueTEC was the OM651.912 2.1-liter inline-four cylinder diesel engine. This engine was a mainstay in the Mercedes-Benz lineup, known for its robust construction and fuel efficiency. It featured common-rail direct injection, delivering fuel at extremely high pressure for optimized combustion. The engine employed a twin-turbocharger setup – a smaller turbo for quick response at low engine speeds and a larger turbo for increased power at higher RPMs. The DOHC (Double Overhead Camshaft) valvetrain, with four valves per cylinder, further enhanced breathing and performance. Paired with the engine was the 7G-TRONIC PLUS seven-speed automatic transmission, renowned for its smooth shifting and efficiency. This transmission featured a torque converter lock-up clutch to reduce slippage and improve fuel economy. The 4MATIC all-wheel-drive system distributed power between the front and rear axles as needed, providing enhanced traction and stability.
Driving Characteristics
The GLK 220 BlueTEC 4MATIC offered a comfortable and refined driving experience, prioritizing fuel economy and ease of use over outright performance. With 170 horsepower and 400 Nm (295 lb-ft) of torque, acceleration was adequate for everyday driving, achieving 0-60 mph in approximately 8.4 seconds. The 7G-TRONIC PLUS transmission was well-tuned for smooth, almost imperceptible gear changes. Compared to the more powerful GLK 350, the 220 BlueTEC felt less urgent in acceleration, but its abundant low-end torque made it well-suited for highway cruising and navigating city traffic. The automatic transmission’s gear ratios were optimized for fuel efficiency, keeping engine RPMs relatively low at cruising speeds. While not a sports SUV, the GLK 220 BlueTEC provided a composed and stable ride, thanks to its well-tuned suspension and all-wheel-drive system.
Equipment & Trim Levels
The GLK 220 BlueTEC 4MATIC typically came standard with a respectable level of equipment. This included features like automatic climate control, power-adjustable front seats, a multi-function steering wheel, and an audio system with Bluetooth connectivity. Interior upholstery was typically MB-Tex artificial leather, with optional genuine leather available. The dashboard featured a classic Mercedes-Benz design with wood or aluminum trim options. Common optional extras included a navigation system, a panoramic sunroof, parking sensors, and a premium sound system. Safety features such as ABS, ESP (Electronic Stability Program), and multiple airbags were standard across the range.
Chassis & Braking
The GLK 220 BlueTEC utilized an independent suspension system at all four corners. The front suspension employed a McPherson strut design with coil springs and an anti-roll bar, while the rear featured a multi-link setup, also with coil springs and a stabilizer bar. This configuration provided a good balance between ride comfort and handling. Braking duties were handled by ventilated disc brakes on all four wheels, providing ample stopping power. The GLK 220 BlueTEC’s weight, around 1850 kg (4078.55 lbs), was relatively moderate for its class, contributing to its manageable handling characteristics.
Market Reception & Comparison
The GLK 220 BlueTEC 4MATIC was generally well-received by automotive critics, particularly for its fuel efficiency and comfortable ride. It was often praised as a practical and sensible choice for buyers prioritizing economy over performance. Compared to the GLK 350, the 220 BlueTEC offered significantly better fuel economy, making it a more attractive option for those covering long distances. However, some reviewers noted that the engine could feel strained when pushed hard, and the acceleration was not as brisk as that of its gasoline-powered sibling. Reliability reports generally indicated good dependability for the OM651 engine and 7G-TRONIC transmission, although routine maintenance was crucial for long-term durability.
Legacy
The GLK 220 BlueTEC 4MATIC, while not the most powerful or sporty variant of the X204 GLK-Class, has proven to be a durable and reliable vehicle in the used car market. The OM651 diesel engine is known for its longevity when properly maintained. Today, these vehicles offer a compelling value proposition for buyers seeking a comfortable, fuel-efficient, and relatively affordable luxury SUV. The combination of Mercedes-Benz build quality, the robust diesel powertrain, and the all-wheel-drive system makes the GLK 220 BlueTEC a practical and dependable choice for everyday use. However, potential buyers should be aware of the maintenance requirements associated with diesel engines, including regular AdBlue refills and potential issues with the diesel particulate filter.
