The Mercedes-Benz GLK 220 CDI 4MATIC, produced from June 2012 to June 2015, was a key variant within the X204 GLK facelift range. Positioned as a mid-range offering, it aimed to balance fuel efficiency with respectable performance and the added security of all-wheel drive. This model represented Mercedes-Benz’s entry into the compact luxury SUV segment, competing with vehicles like the BMW X3 and Audi Q5. The GLK 220 CDI 4MATIC utilized a diesel engine paired with a seven-speed automatic transmission, making it a popular choice in European markets where diesel fuel was prevalent and taxation favored lower displacement engines.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | GLK |
| Generation | GLK (X204, facelift 2012) |
| Type (Engine) | GLK 220 CDI (170 Hp) 4MATIC 7G-TRONIC PLUS |
| Start of production | June, 2012 |
| End of production | June, 2015 |
| 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 | 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 5 |
| Weight-to-power ratio | 10.6 kg/Hp |
| Weight-to-torque ratio | 4.5 kg/Nm |
| Power | 170 Hp @ 3200-4200 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 | 1805 kg (3979.34 lbs.) |
| Max. weight | 2455 kg (5412.35 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%) | 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). Internal Combustion engine. |
| Number of gears and type of gearbox | 7 gears, automatic transmission G-TRONIC PLUS |
| 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 mm |
| Rear brakes | Ventilated discs, 300 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size (Front/Rear) | 235/60 R17; 235/50 R19; 235/45 R20 / 235/60 R17; 255/55 R17; 235/50 R19; 255/45 R19; 255/40 R20 |
| Wheel rims size (Front/Rear) | 7.5J x 17; 7.5J x 19; 8J x 20; 8.5J x 20 / 7.5J x 17; 8J x 17; 7.5J x 19; 8.5J x 19; 9J x 20; 9.5J x 20 |
Powertrain & Engine Architecture
The GLK 220 CDI 4MATIC was powered by the OM651.912 2.1-liter inline-four cylinder diesel engine. This engine was a mainstay in the Mercedes-Benz lineup, known for its durability and efficiency. It featured common-rail direct injection, a twin-turbocharger setup (one low-pressure and one high-pressure turbo), and an intercooler. The twin-turbo configuration was crucial for mitigating turbo lag and providing a broader torque curve. The engine utilized a double overhead camshaft (DOHC) valvetrain with four valves per cylinder. The 7G-TRONIC PLUS automatic transmission, a seven-speed unit, was specifically tuned to complement the engine’s characteristics, offering smooth shifts and efficient gear ratios. This transmission featured a torque converter lock-up clutch to improve fuel economy at cruising speeds.
Driving Characteristics
The 170 horsepower and 400 Nm (295 lb-ft) of torque delivered by the GLK 220 CDI 4MATIC provided adequate, though not exhilarating, performance. Acceleration from 0 to 60 mph took approximately 8.4 seconds, and the top speed was 205 km/h (127 mph). The 7G-TRONIC PLUS transmission was programmed for comfort and efficiency, with gear changes often prioritizing smoothness over outright speed. Compared to the more powerful GLK 350 models, the 220 CDI felt less responsive, particularly during overtaking maneuvers. However, the strong low-end torque of the diesel engine made it well-suited for everyday driving and towing. The 4MATIC all-wheel-drive system provided enhanced traction in inclement weather conditions, making it a practical choice for drivers in regions with snow or rain.
Equipment & Trim Levels
The GLK 220 CDI 4MATIC typically came standard with features such as automatic climate control, power windows and locks, a multi-function steering wheel, and an audio system with a color display. Upholstery was generally a combination of fabric and synthetic leather, though full leather options were available. Common optional extras included a panoramic sunroof, navigation system, heated seats, parking sensors, and a premium sound system. The GLK offered a relatively minimalist interior design, focusing on functionality and build quality rather than flashy aesthetics.
Chassis & Braking
The GLK 220 CDI 4MATIC featured an independent suspension system at all four wheels. The front suspension utilized McPherson struts with coil springs and an anti-roll bar, while the rear suspension employed a multi-link setup with a stabilizer bar. This configuration provided a comfortable ride quality, though it wasn’t particularly sporty. The braking system consisted of ventilated disc brakes on all four wheels. Anti-lock braking system (ABS) was standard, enhancing safety and control during emergency braking situations. The GLK’s chassis was designed to provide a balance between on-road comfort and off-road capability, though it was primarily intended for use on paved surfaces.
Market Reception & Comparison
The GLK 220 CDI 4MATIC was generally well-received by automotive critics, particularly for its fuel efficiency and comfortable ride. However, some reviewers noted that the engine lacked the refinement and power of its competitors. Compared to the GLK 350, the 220 CDI offered significantly better fuel economy (around 36-46 mpg combined) but at the expense of performance. The diesel engine also required more frequent maintenance, including diesel particulate filter (DPF) regeneration. Despite these drawbacks, the GLK 220 CDI 4MATIC proved to be a popular choice for buyers seeking a practical and economical luxury SUV.
Legacy
The OM651 engine family, including the OM651.912 found in the GLK 220 CDI, is known for its robustness and longevity. With proper maintenance, these engines can reliably exceed 200,000 miles. The 7G-TRONIC PLUS transmission is also generally considered to be a durable unit. However, potential issues can arise with the diesel particulate filter (DPF) and the fuel injection system. In the used car market, the GLK 220 CDI 4MATIC represents a relatively affordable entry point into the Mercedes-Benz luxury SUV segment. Its fuel efficiency and all-wheel-drive capability continue to make it an attractive option for buyers seeking a practical and reliable vehicle.
