The Mercedes-Benz CLS 63 AMG, specifically the C219 generation produced between June 2006 and January 2008, represented a significant foray into the four-door coupe market for the German automaker. Positioned as the high-performance variant of the CLS lineup, it combined the luxurious appointments expected of a Mercedes-Benz with the potent power of AMG’s naturally aspirated V8 engine. This model aimed to deliver a unique blend of grand touring comfort and exhilarating performance, appealing to buyers seeking a more dynamic alternative to traditional luxury sedans. It was built on the W219 platform, sharing underpinnings with the E-Class (W211) but distinguished by its dramatically sloping roofline and sporty aesthetic.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | CLS |
| Generation | CLS coupe (C219) |
| Type | AMG CLS 63 V8 (514 Hp) 7G-TRONIC AMG SPEEDSHIFT |
| Start of production | June, 2006 |
| End of production | January, 2008 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 4 |
| Fuel consumption (urban) | 22.6 l/100 km (10.4 US mpg, 12.5 UK mpg, 4.4 km/l) |
| Fuel consumption (extra urban) | 9.9 l/100 km (23.8 US mpg, 28.5 UK mpg, 10.1 km/l) |
| Fuel consumption (combined) | 14.5 l/100 km (16.2 US mpg, 19.5 UK mpg, 6.9 km/l) |
| CO2 emissions | 345 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 4.5 sec |
| Acceleration 0 – 62 mph | 4.5 sec |
| Acceleration 0 – 60 mph | 4.3 sec |
| Maximum speed | 250 km/h (155.34 mph), Electronically limited |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 3.6 kg/Hp, 280.9 Hp/tonne |
| Weight-to-torque ratio | 2.9 kg/Nm, 344.3 Nm/tonne |
| Power | 514 Hp @ 6800 rpm |
| Power per litre | 82.8 Hp/l |
| Torque | 630 Nm @ 5200-7200 rpm (464.66 lb.-ft. @ 5200-7200 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 156.983 |
| 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) |
| Coolant | 11.8 l (12.47 US qt | 10.38 UK qt) |
| Kerb Weight | 1830 kg (4034.46 lbs.) |
| Max. weight | 2370 kg (5224.96 lbs.) |
| Max load | 540 kg (1190.5 lbs.) |
| Trunk (boot) space (minimum) | 495 l (17.48 cu. ft.) |
| Fuel tank capacity | 80 l (21.13 US gal | 17.6 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Length | 4915 mm (193.5 in.) |
| Width | 1873 mm (73.74 in.) |
| Height | 1389 mm (54.69 in.) |
| Wheelbase | 2854 mm (112.36 in.) |
| Front track | 1599 mm (62.95 in.) |
| Rear track | 1583 mm (62.32 in.) |
| Drag coefficient (Cd) | 0.31 |
| Minimum turning circle | 11.5 m (37.73 ft.) |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears | 7 |
| Gearbox type | Automatic transmission G-TRONIC AMG SPEEDSHIFT |
| Front suspension | Independent multi-link suspension, Transverse stabilizer, Air suspension |
| Rear suspension | Independent multi-link suspension, Air suspension, Transverse stabilizer |
| Front brakes | Ventilated discs, 360 mm |
| Rear brakes | Ventilated discs, 330 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Front tires | 255/40 R18 |
| Rear tires | 285/35 R18 |
| Front wheel rims | 8.5J x 18 |
| Rear wheel rims | 9.5J x 18 |
Powertrain & Engine Architecture
At the heart of the CLS 63 AMG lay the M156.983 6.2-liter naturally aspirated V8 engine. This engine, a hallmark of AMG’s engineering prowess during the mid-2000s, was notable for its high-revving character and robust construction. It featured a cast aluminum block with silicon-aluminum alloy cylinder liners, a forged crankshaft, and lightweight pistons. The engine utilized a three-valve-per-cylinder design (two intake, one exhaust) and a variable valve timing system on both intake and exhaust camshafts. Fuel delivery was handled by a multi-port fuel injection system. The engine produced 514 horsepower at 6800 rpm and 630 Nm (464.66 lb-ft) of torque between 5200 and 7200 rpm. This power was channeled to the rear wheels through the 7G-TRONIC AMG SPEEDSHIFT automatic transmission, a seven-speed unit specifically tuned for performance with quicker shift times and a more responsive feel. The transmission offered driver-selectable modes, including Comfort, Sport, and Manual, allowing for a tailored driving experience.
Driving Characteristics
The CLS 63 AMG delivered a driving experience that was both refined and exhilarating. The 6.2-liter V8 provided a broad torque curve, offering strong acceleration in any gear. The 7G-TRONIC transmission, while smooth in automatic mode, allowed for precise gear changes when operated manually. Compared to the CLS 350 or 500 models, the 63 AMG offered a significantly more aggressive and sporty driving experience. While the lower-powered variants prioritized comfort and fuel efficiency, the 63 AMG focused on performance. The 0-60 mph sprint was dispatched in around 4.3 seconds, and the electronically limited top speed of 155 mph provided ample performance for highway cruising and spirited driving. The air suspension, standard on the 63 AMG, contributed to a comfortable ride while also minimizing body roll during cornering.
Equipment & Trim Levels
The CLS 63 AMG came standard with a comprehensive list of features befitting its flagship status. Interior appointments included premium leather upholstery, wood trim, and AMG-specific sport seats. Standard equipment also included a multi-function steering wheel, automatic climate control, a premium sound system, and bi-xenon headlights. Optional extras included a panoramic sunroof, a rear-seat entertainment system, and various customization options for interior trim and exterior paint. The overall interior design emphasized luxury and sophistication, with a focus on high-quality materials and craftsmanship.
Chassis & Braking
The CLS 63 AMG featured a sophisticated chassis designed to handle the engine’s substantial power. The suspension utilized an independent multi-link setup at both the front and rear, with air suspension providing adjustable ride height and damping. Large ventilated disc brakes were fitted at all four corners, providing ample stopping power. The front brakes measured 360mm in diameter, while the rear brakes were 330mm. An anti-lock braking system (ABS) was standard, along with electronic stability control. The car’s weight distribution was carefully balanced to enhance handling and stability.
Market Reception & Comparison
The CLS 63 AMG was generally well-received by automotive critics, who praised its powerful engine, luxurious interior, and unique styling. However, some reviewers noted the relatively high fuel consumption and the firm ride quality, particularly in Sport mode. Compared to its rivals, such as the Porsche Panamera and the BMW 6 Series, the CLS 63 AMG offered a distinctive blend of luxury and performance. The Panamera was often lauded for its handling precision, while the 6 Series was praised for its more refined ride. The CLS 63 AMG carved out its own niche by offering a more dramatic and aggressive aesthetic, coupled with the unmistakable sound and feel of AMG’s naturally aspirated V8.
Legacy
The C219 CLS 63 AMG remains a desirable vehicle in the used car market today, particularly among enthusiasts who appreciate its unique character and potent performance. The M156 engine is known for its durability and relatively straightforward maintenance, although it is a thirsty engine. While modern performance cars offer greater fuel efficiency and more advanced technology, the CLS 63 AMG continues to provide a visceral and engaging driving experience that is increasingly rare in the automotive landscape. Its distinctive styling and powerful engine have cemented its place as a modern classic.
