The Mercedes-Benz CL63 AMG, specifically the C215 generation produced between 2001 and 2002, represents a pinnacle of early 21st-century grand touring luxury and performance. This variant, powered by the M137.980 6.3-liter V12 engine producing 444 horsepower, was positioned as the flagship model within the C215 CL-Class range, offering a substantial step up in power and exclusivity compared to the CL500 and CL55 AMG models. It was a statement vehicle, showcasing Mercedes-Benz’s engineering prowess and commitment to delivering a uniquely refined driving experience. The C215 CL, launched in 1999, was a significant redesign of the CL-Class, introducing a more modern aesthetic and advanced technology, and the CL63 V12 represented the ultimate expression of that vision.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | CL |
| Generation | CL (C215) |
| Type | AMG CL 63 V12 (444 Hp) Automatic |
| Start of production | September, 2001 |
| End of production | 2002 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (economy) – urban (NEDC) | 22.2 l/100 km (10.6 US mpg, 12.7 UK mpg, 4.5 km/l) |
| Fuel consumption (economy) – extra urban (NEDC) | 9.8 l/100 km (24 US mpg, 28.8 UK mpg, 10.2 km/l) |
| Fuel consumption (economy) – combined (NEDC) | 14.1 l/100 km (16.7 US mpg, 20 UK mpg, 7.1 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.5 sec |
| Acceleration 0 – 62 mph | 5.5 sec |
| Acceleration 0 – 60 mph | 5.2 sec |
| Maximum speed | 250 km/h (155.34 mph), Electronically limited |
| Weight-to-power ratio | 4.2 kg/Hp, 236.2 Hp/tonne |
| Weight-to-torque ratio | 3 kg/Nm, 329.8 Nm/tonne |
| Power | 444 Hp @ 5500 rpm |
| Power per litre | 70.9 Hp/l |
| Torque | 620 Nm @ 4400 rpm (457.29 lb.-ft. @ 4400 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 137.980 |
| Engine displacement | 6258 cm3 (381.89 cu. in.) |
| Number of cylinders | 12 |
| Engine configuration | V-engine |
| Cylinder Bore | 84.5 mm (3.33 in.) |
| Piston Stroke | 93 mm (3.66 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 | 9.5 l (10.04 US qt | 8.36 UK qt) |
| Coolant | 12 l (12.68 US qt | 10.56 UK qt) |
| Kerb Weight | 1880 kg (4144.69 lbs.) |
| Max. weight | 2380 kg (5247 lbs.) |
| Max load | 500 kg (1102.31 lbs.) |
| Trunk (boot) space – minimum | 450 l (15.89 cu. ft.) |
| Fuel tank capacity | 88 l (23.25 US gal | 19.36 UK gal) |
| Length | 4993 mm (196.57 in.) |
| Width | 1857 mm (73.11 in.) |
| Height | 1398 mm (55.04 in.) |
| Wheelbase | 2885 mm (113.58 in.) |
| Front track | 1577 mm (62.09 in.) |
| Rear (Back) track | 1578 mm (62.13 in.) |
| Drag coefficient (Cd) | 0.28 |
| 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 | 5 gears, automatic transmission |
| Front suspension | Independent multi-link suspension |
| Rear suspension | Independent multi-link suspension |
| 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 |
| Tires size | Front wheel tires: 245/45 R 18 96 YRear wheel tires: 275/40 R 18 99 Y |
| Wheel rims size | Front wheel rims: 8.5 J x 18 H 2Rear wheel rims: 9.5 J x 18 H 2 |
Powertrain & Engine Architecture
The heart of the CL63 AMG is the M137.980 6.3-liter V12 engine. This engine, a descendant of the legendary Mercedes-Benz V12s, is naturally aspirated and features a robust cast-iron block and aluminum cylinder heads. It utilizes a single overhead camshaft (SOHC) design per bank, operating three valves per cylinder (two intake, one exhaust). Fuel delivery is managed by a multi-port fuel injection system, ensuring precise fuel metering for optimal performance and efficiency. The engine’s 6258cc displacement, combined with a 10:1 compression ratio, allows it to generate a substantial 444 horsepower at 5500 rpm and 620 Nm (457 lb-ft) of torque at 4400 rpm. The engine is longitudinally mounted in the front of the vehicle. Paired with the engine is a 5-speed automatic transmission, specifically tuned by AMG for smooth and responsive shifts. This transmission was chosen for its ability to handle the engine’s significant torque output and provide a comfortable driving experience.
Driving Characteristics
The CL63 AMG delivers a driving experience characterized by effortless power and refined comfort. The large-displacement V12 provides a broad torque curve, resulting in strong acceleration across the entire rev range. While the 5.5-second 0-60 mph time is respectable, the true appeal lies in the engine’s ability to effortlessly maintain high speeds on the highway. The automatic transmission, while not as quick-shifting as modern gearboxes, is smooth and well-matched to the engine’s characteristics. The CL63 feels significantly heavier and less agile than the CL55 AMG, due to the V12’s added weight. However, the increased power more than compensates for this, providing a more authoritative and luxurious grand touring experience.
Equipment & Trim Levels
As the range-topping model, the CL63 AMG came standard with a comprehensive list of luxury features. Interior appointments included premium leather upholstery, wood trim, and heated/cooled front seats with memory function. Standard equipment also included automatic climate control, a premium sound system, and power-adjustable steering column and pedals. Optional extras included a rear seat entertainment system, upgraded leather options, and various cosmetic enhancements. The exterior was distinguished by AMG-specific body styling, including unique front and rear bumpers, side skirts, and alloy wheels.
Chassis & Braking
The CL63 AMG features an independent multi-link suspension at both the front and rear, providing a comfortable ride and good handling characteristics. The suspension was specifically tuned to complement the car’s weight and power. Braking duties are handled by ventilated disc brakes at all four corners, coupled with an Anti-lock Braking System (ABS) for enhanced safety. The CL63’s curb weight of 1880 kg (4144.69 lbs) necessitates a robust braking system to provide adequate stopping power.
Market Reception & Comparison
The CL63 AMG was generally well-received by automotive critics, who praised its powerful engine, luxurious interior, and refined driving experience. However, its high price tag and relatively poor fuel economy (14.1 l/100 km combined) limited its appeal to a niche market. Compared to the CL55 AMG, the CL63 offered significantly more power and exclusivity, but at a substantial price premium. The CL55 AMG, with its supercharged V8, provided a more engaging driving experience for those prioritizing handling and responsiveness. The CL63, however, appealed to buyers seeking the ultimate in luxury and effortless performance.
Legacy
The M137 V12 engine, while complex and expensive to maintain, has proven to be relatively reliable when properly serviced. The 5-speed automatic transmission is also generally durable. Today, the C215 CL63 AMG is a sought-after classic, appealing to collectors and enthusiasts who appreciate its unique combination of luxury, performance, and exclusivity. Finding well-maintained examples can be challenging, and maintenance costs are considerably higher than those of more common CL-Class variants. However, for those willing to invest the time and money, the CL63 AMG offers a truly special and rewarding driving experience, representing a high point in Mercedes-Benz’s grand touring heritage.
