The Mercedes-Benz CLK 500, produced from June 2004 to May 2005, represented the high-performance variant of the A209 CLK-Class. Positioned as the flagship engine option within the second-generation CLK (A209) range, it offered a significant step up in power and refinement compared to the CLK 320 and other lower-spec models. Available exclusively as a two-door coupe or convertible (Cabriolet), the CLK 500 aimed to deliver a luxurious grand touring experience with genuine sports car performance. It was a key model in Mercedes-Benz’s strategy to offer a diverse range of vehicles within the premium coupe/convertible segment, competing with offerings from BMW and Audi.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | CLK |
| Generation | CLK (A209) |
| Type (Engine) | CLK 500 (306 Hp) 7G-TRONIC |
| Start of production | June, 2004 |
| End of production | May, 2005 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (economy) – urban (NEDC) | 16.9 l/100 km (13.9 US mpg, 16.7 UK mpg, 5.9 km/l) |
| Fuel consumption (economy) – extra urban (NEDC) | 8.2 l/100 km (28.7 US mpg, 34.4 UK mpg, 12.2 km/l) |
| Fuel consumption (economy) – combined (NEDC) | 11.1 l/100 km (21.2 US mpg, 25.4 UK mpg, 9 km/l) |
| CO2 emissions (NEDC) | 278 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6.1 sec |
| Acceleration 0 – 62 mph | 6.1 sec |
| Acceleration 0 – 60 mph | 5.8 sec |
| Maximum speed | 250 km/h (155.34 mph) – Electronically limited |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 5.6 kg/Hp, 178.9 Hp/tonne |
| Weight-to-torque ratio | 3.7 kg/Nm, 269 Nm/tonne |
| Power | 306 Hp @ 5600 rpm |
| Power per litre | 61.6 Hp/l |
| Torque | 460 Nm @ 2700-4250 rpm (339.28 lb.-ft. @ 2700-4250 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 113.968 |
| Engine displacement | 4966 cm3 (303.04 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 97 mm (3.82 in.) |
| Piston Stroke | 84 mm (3.31 in.) |
| Compression ratio | 10:1 |
| Number of valves per cylinder | 3 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | SOHC |
| Engine oil capacity | 7.5 l (7.93 US qt | 6.6 UK qt) |
| Coolant | 11.5 l (12.15 US qt | 10.12 UK qt) |
| Kerb Weight | 1710 kg (3769.9 lbs.) |
| Max. weight | 2225 kg (4905.29 lbs.) |
| Max load | 515 kg (1135.38 lbs.) |
| Trunk (boot) space – minimum | 276 l (9.75 cu. ft.) |
| Trunk (boot) space – maximum | 390 l (13.77 cu. ft.) |
| Fuel tank capacity | 62 l (16.38 US gal | 13.64 UK gal) |
| Permitted trailer load with brakes (12%) | 1500 kg (3306.93 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Length | 4638 mm (182.6 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 | 1497 mm (58.94 in.) |
| Rear (Back) track | 1478 mm (58.19 in.) |
| Front overhang | 840 mm (33.07 in.) |
| Rear overhang | 1083 mm (42.64 in.) |
| Drag coefficient (Cd) | 0.30 |
| Minimum turning circle (turning diameter) | 10.76 m (35.3 ft.) |
| 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 | 7 gears, automatic transmission G-TRONIC |
| Front suspension | Independent type McPherson, Transverse stabilizer |
| Rear suspension | Independent multi-link suspension, Transverse stabilizer |
| Front brakes | Ventilated discs, 345×30 mm |
| Rear brakes | Ventilated discs, 300×22 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | Front wheel tires: 225/45 R17 Rear wheel tires: 245/40 R17 |
| Wheel rims size | Front wheel rims: 7.5 J x 17 Rear wheel rims: 8.5 J x 17 |
Powertrain & Engine Architecture
The heart of the CLK 500 is the M113.968 5.0-liter naturally aspirated V8 engine. This engine, a cornerstone of Mercedes-Benz’s performance lineup in the early 2000s, features a three-valve-per-cylinder (two intake, one exhaust) SOHC design and multi-port fuel injection. The engine produces 306 horsepower at 5600 rpm and 460 Nm (339 lb-ft) of torque between 2700 and 4250 rpm. The engine’s architecture is longitudinally mounted at the front of the vehicle, driving the rear wheels. The M113 engine family was known for its smooth power delivery and robust construction. Paired with the engine is the 7G-TRONIC seven-speed automatic transmission. This transmission offered smoother shifts and improved fuel efficiency compared to older five-speed automatics. The 7G-TRONIC also featured a manual shift mode, allowing drivers more control over gear selection.
Driving Characteristics
The CLK 500 delivered a distinctly different driving experience compared to the CLK 320 or the diesel-powered CLK models. The V8 engine provided strong acceleration, achieving 0-60 mph in approximately 5.8 seconds and a governed top speed of 155 mph. The 7G-TRONIC transmission contributed to a refined and comfortable ride, with well-spaced gear ratios that kept the engine in its optimal power band. While not as overtly sporty as some of its rivals, the CLK 500 offered a balanced blend of performance and luxury. The steering was precise, and the suspension provided a comfortable yet controlled ride. Compared to a manual transmission equipped CLK, the 7G-TRONIC prioritized smooth shifts and ease of use over outright driver engagement.
Equipment & Trim Levels
The CLK 500 was generally well-equipped, reflecting its position as the range-topping model. Standard features included leather upholstery, automatic climate control, power-adjustable seats with memory function, a premium sound system, and rain-sensing wipers. Optional extras included a panoramic sunroof, COMAND infotainment system with navigation, and various cosmetic enhancements. Interior trim options typically included wood or carbon fiber accents. The Cabriolet version featured a fully automatic retractable hardtop, providing open-air driving enjoyment with the security and refinement of a coupe.
Chassis & Braking
The CLK 500 utilized an independent suspension system, with McPherson struts at the front and a multi-link setup at the rear. This configuration provided a good balance of ride comfort and handling. 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. ABS (Anti-lock Braking System) was standard. The CLK 500’s chassis was designed to handle the increased power output of the V8 engine, offering a stable and predictable driving experience.
Market Reception & Comparison
The CLK 500 was generally well-received by automotive critics, who praised its powerful engine, refined transmission, and luxurious interior. However, some reviewers noted that it lacked the outright sporting character of some of its competitors, such as the BMW 6 Series. Fuel economy was also a concern, with combined fuel consumption figures around 21.2 US mpg. Compared to the CLK 320, the CLK 500 offered a significant performance upgrade, but at a higher price point. The diesel-powered CLK models offered better fuel economy but lacked the V8’s power and refinement.
Legacy
The M113 V8 engine used in the CLK 500 is known for its durability and reliability, provided it receives regular maintenance. While not immune to age-related issues, these engines are generally considered robust and capable of high mileage. Today, the CLK 500 represents a desirable entry point into the world of Mercedes-Benz V8 ownership. The combination of performance, luxury, and relative affordability makes it an attractive option for enthusiasts. However, potential buyers should be aware of the higher maintenance costs associated with a V8 engine and the potential for age-related issues with the convertible top mechanism (on Cabriolet models).
