The Mercedes-Benz CLK 63 AMG, produced from 2006 to 2009 as part of the A209 facelift generation, represented the pinnacle of performance for the CLK-Class. This high-performance variant combined a naturally aspirated 6.2-liter V8 engine with the 7G-TRONIC seven-speed automatic transmission, delivering a potent driving experience in a stylish coupe or convertible body style. Positioned as the flagship model, the CLK 63 AMG catered to enthusiasts seeking a blend of luxury, performance, and Mercedes-Benz engineering.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | CLK |
| Generation | CLK (A209, facelift 2005) |
| Type | AMG CLK 63 V8 (481 Hp) 7G-TRONIC |
| Start of production | June, 2006 |
| End of production | July, 2009 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 21.6 l/100 km (10.9 US mpg, 13.1 UK mpg, 4.6 km/l) |
| Fuel consumption (extra urban) | 10.2 l/100 km (23.1 US mpg, 27.7 UK mpg, 9.8 km/l) |
| Fuel consumption (combined) | 14.4 l/100 km (16.3 US mpg, 19.6 UK mpg, 6.9 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 4.7 sec |
| Acceleration 0 – 62 mph | 4.7 sec |
| Acceleration 0 – 60 mph | 4.5 sec |
| Maximum speed | 250 km/h (155.34 mph), Electronically limited |
| Weight-to-power ratio | 3.9 kg/Hp, 256.5 Hp/tonne |
| Weight-to-torque ratio | 3 kg/Nm, 336 Nm/tonne |
| Power | 481 Hp @ 6800 rpm |
| Power per litre | 77.5 Hp/l |
| Torque | 630 Nm @ 5000 rpm (464.66 lb.-ft. @ 5000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 156.982 |
| Engine displacement | 6208 cm3 (378.84 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 102.2 mm (4.02 in.) |
| Piston Stroke | 94.6 mm (3.72 in.) |
| Compression ratio | 11.3:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 8.8 l (9.3 US qt | 7.74 UK qt) |
| Kerb Weight | 1875 kg (4133.67 lbs.) |
| Max. weight | 2260 kg (4982.45 lbs.) |
| Max load | 385 kg (848.78 lbs.) |
| Fuel tank capacity | 62 l (16.38 US gal | 13.64 UK gal) |
| Length | 4652 mm (183.15 in.) |
| Width | 1740 mm (68.5 in.) |
| Height | 1400 mm (55.12 in.) |
| Wheelbase | 2715 mm (106.89 in.) |
| Front track | 1495 mm (58.86 in.) |
| Rear track | 1474 mm (58.03 in.) |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears | 7 |
| Gearbox type | Automatic transmission G-TRONIC |
| 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 |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Front tires | 225/40 R18 |
| Rear tires | 255/35 R18 |
| Front wheel rims | 7.5J x 18 |
| Rear wheel rims | 8.5J x 18 |
Powertrain & Engine Architecture
The heart of the CLK 63 AMG was the M156.982 6.2-liter naturally aspirated V8 engine. This engine, a hallmark of AMG’s engineering prowess, featured a cast aluminum block with silicon-aluminum alloy cylinder liners. It utilized a multi-port fuel injection system and a double overhead camshaft (DOHC) valvetrain with four valves per cylinder. The engine produced 481 horsepower at 6800 rpm and 464 lb-ft of torque at 5000 rpm. The 7G-TRONIC seven-speed automatic transmission, developed by Mercedes-Benz, was specifically tuned to handle the engine’s substantial power output. This transmission offered smooth and relatively quick shifts, contributing to the car’s overall performance. The transmission featured a torque converter lock-up clutch to improve efficiency at cruising speeds.
Driving Characteristics
The CLK 63 AMG delivered a thrilling driving experience. The combination of the powerful V8 engine and the responsive 7G-TRONIC transmission resulted in brisk acceleration – 0 to 60 mph in approximately 4.5 seconds. While not as overtly aggressive as some contemporary sports cars, the CLK 63 offered a refined yet potent performance character. The automatic transmission, while efficient, didn’t offer the same level of driver engagement as a manual gearbox. However, it provided seamless power delivery and made the car accessible to a wider range of drivers. The suspension, tuned for performance, provided a firm but comfortable ride, balancing handling precision with everyday usability.
Equipment & Trim Levels
The CLK 63 AMG came standard with a comprehensive list of features, befitting its flagship status. Interior appointments included premium leather upholstery, AMG sport seats, and wood or carbon fiber trim. Standard equipment also included automatic climate control, a premium sound system, and bi-xenon headlights. Optional extras included a panoramic sunroof, upgraded audio systems, and various customization options through the AMG Performance Studio. The exterior featured AMG-specific body styling, including unique front and rear bumpers, side skirts, and quad exhaust outlets.
Chassis & Braking
The CLK 63 AMG featured a robust chassis designed to handle the engine’s power. The suspension utilized an independent McPherson strut setup at the front and a multi-link suspension at the rear, both with coil springs and anti-roll bars. Braking duties were handled by ventilated disc brakes on all four wheels, providing ample stopping power. The Anti-lock Braking System (ABS) was standard, enhancing safety and control. The car’s steering employed a hydraulic power steering system, offering precise and responsive feedback.
Market Reception & Comparison
The CLK 63 AMG was generally well-received by automotive critics. It was praised for its powerful engine, refined ride, and luxurious interior. However, some critics noted that its fuel economy was relatively poor, and the automatic transmission lacked the engagement of a manual gearbox. Compared to its siblings, such as the CLK 350 or CLK 500, the CLK 63 AMG offered a significantly higher level of performance. It competed with other high-performance coupes and convertibles, such as the BMW M3 and the Porsche 911.
Legacy
The M156 engine, found in the CLK 63 AMG, is regarded as one of AMG’s most iconic powerplants. It’s known for its reliability and robust construction. While fuel economy is a concern by modern standards, the engine has proven to be durable with proper maintenance. Today, the CLK 63 AMG remains a desirable used car, appealing to enthusiasts who appreciate its blend of performance, luxury, and classic Mercedes-Benz styling. Values have remained relatively stable, reflecting the car’s enduring appeal and the reputation of the M156 engine.
