Technical Specifications
| Brand | Mercedes-Benz |
| Model | CLK |
| Generation | CLK (C209, facelift 2005) |
| Type (Engine) | CLK 220 CDI (150 Hp) |
| Start of production | 2005 |
| End of production | 2009 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 8.6-8.8 l/100 km (27.4 – 26.7 US mpg) |
| Fuel consumption (extra urban) | 5.1-5.2 l/100 km (46.1 – 45.2 US mpg) |
| Fuel consumption (combined) | 6.8-6.9 l/100 km (34.6 – 34.1 US mpg) |
| CO2 emissions | 169-172 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 10.2 sec |
| Acceleration 0 – 62 mph | 10.2 sec |
| Acceleration 0 – 60 mph | 9.7 sec |
| Maximum speed | 221 km/h (137.32 mph) |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 10.2 kg/Hp |
| Weight-to-torque ratio | 4.5 kg/Nm |
| Power | 150 Hp @ 4200 rpm |
| Torque | 340 Nm @ 2000 rpm (250.77 lb.-ft. @ 2000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 646.963 |
| Engine displacement | 2148 cm3 (131.08 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 88 mm (3.46 in.) |
| Piston Stroke | 88.3 mm (3.48 in.) |
| Compression ratio | 18:1 |
| 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) |
| Coolant capacity | 7.5 l (7.93 US qt | 6.6 UK qt) |
| Kerb Weight | 1525 kg (3362.05 lbs.) |
| Max. weight | 2045 kg (4508.45 lbs.) |
| Max load | 520 kg (1146.4 lbs.) |
| Trunk (boot) space (minimum) | 435 l (15.36 cu. ft.) |
| Fuel tank capacity | 62 l (16.38 US gal | 13.64 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load (with brakes) | 1500 kg (3306.93 lbs.) |
| Permitted trailer load (without brakes) | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 75 kg (165.35 lbs.) |
| Length | 4652 mm (183.15 in.) |
| Width | 1740 mm (68.5 in.) |
| Width including mirrors | 1991 mm (78.39 in.) |
| Height | 1413 mm (55.63 in.) |
| Wheelbase | 2715 mm (106.89 in.) |
| Front track | 1493 mm (58.78 in.) |
| Rear track | 1474 mm (58.03 in.) |
| Front overhang | 854 mm (33.62 in.) |
| Rear overhang | 1083 mm (42.64 in.) |
| Drag coefficient (Cd) | 0.28 |
| Minimum turning circle | 10.76 m (35.3 ft.) |
| Drivetrain | Rear wheel drive |
| Number of gears | 6 |
| Gearbox type | Manual transmission |
| Front suspension | Independent type McPherson, Transverse stabilizer |
| Rear suspension | Independent multi-link suspension, Transverse stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Front tires | 205/55 R16; 225/45 R17 |
| Rear tires | 225/50 R16; 245/40 R17 |
| Front wheel rims | 7J x 16; 7.5J x 17 |
| Rear wheel rims | 8J x 16; 8.5J x 17 |
The Mercedes-Benz CLK 220 CDI, produced from 2005 to 2009 as part of the C209 facelift generation, represented a compelling blend of coupe styling, diesel efficiency, and Mercedes-Benz luxury. Positioned as a mid-range offering within the CLK lineup, it catered to buyers seeking a refined grand tourer with lower running costs than the petrol-powered variants. This model aimed to deliver a balance between performance and economy, appealing to those prioritizing long-distance comfort and fuel efficiency. The C209 CLK series, built on the W203 C-Class platform, offered a more sporting alternative to the sedan, and the 220 CDI specifically targeted the European market where diesel engines were – and continue to be – highly favored.
Powertrain & Engine Architecture
The CLK 220 CDI was powered by the OM 646.963, a 2.1-liter inline-four cylinder diesel engine. This engine was a mainstay in the Mercedes-Benz lineup during the mid-2000s, known for its robust construction and relatively refined operation for a diesel. It featured common-rail direct injection, delivering fuel at extremely high pressure for improved combustion efficiency and reduced emissions. A turbocharger with an intercooler further enhanced performance, boosting power output to 150 horsepower at 4200 rpm and 340 Nm (250.77 lb-ft) of torque at 2000 rpm. The engine utilized a double overhead camshaft (DOHC) valvetrain with four valves per cylinder, optimizing gas flow for increased power and efficiency. The 6-speed manual transmission was standard, providing precise gear changes and contributing to the car’s overall driving experience.
Driving Characteristics
The CLK 220 CDI, with its 150 hp and manual transmission, offered a comfortable and relaxed driving experience. While not overtly sporty, the engine provided ample torque for effortless cruising and confident overtaking. The manual gearbox allowed for greater driver engagement, although the long gearing emphasized fuel economy over outright acceleration. Compared to the more powerful CLK 320 or CLK 500 models, the 220 CDI prioritized fuel efficiency and lower running costs. The 0-60 mph time of around 9.7 seconds was respectable for a diesel coupe of this era, but it was noticeably slower than its petrol-powered siblings. The rear-wheel-drive configuration provided balanced handling, and the well-tuned suspension absorbed bumps effectively, ensuring a comfortable ride.
Equipment & Trim Levels
The CLK 220 CDI typically came equipped with a generous array of standard features, reflecting Mercedes-Benz’s commitment to luxury and comfort. These included automatic climate control, power windows and mirrors, a multi-function steering wheel, and a high-quality audio system. Interior upholstery was typically a combination of cloth and leatherette, with full leather options available as an upgrade. Optional extras included a sunroof, navigation system, heated seats, and upgraded audio systems. The dashboard layout was typical of Mercedes-Benz at the time, featuring a clean and elegant design with intuitive controls.
Chassis & Braking
The CLK 220 CDI utilized an independent suspension system at all four wheels, with McPherson struts at the front and a multi-link setup at the rear. This configuration provided a good balance between ride comfort and handling precision. Stabilizer bars were fitted to both axles to reduce body roll during cornering. The braking system consisted of ventilated discs on all four wheels, providing ample stopping power. Anti-lock braking system (ABS) was standard, enhancing safety and stability during emergency braking situations.
Market Reception & Comparison
The CLK 220 CDI was generally well-received by automotive critics, who praised its fuel efficiency, comfortable ride, and refined interior. However, some reviewers noted that the engine lacked the outright performance of the petrol-powered models. Compared to other trims in the CLK lineup, the 220 CDI offered the best fuel economy, making it an attractive option for drivers who prioritized running costs. Its reliability was generally considered good, although diesel engines can be more susceptible to issues with the fuel injection system and turbocharger over time.
Legacy
The Mercedes-Benz CLK 220 CDI has proven to be a relatively durable and reliable vehicle, and well-maintained examples continue to be sought after in the used car market. The OM 646 engine, while not without its potential issues, is generally considered robust and capable of high mileage. The CLK 220 CDI represents a compelling combination of style, comfort, and efficiency, making it a popular choice for those seeking a refined and economical coupe. Its enduring appeal lies in its ability to deliver a classic Mercedes-Benz experience at a relatively affordable price point.
