The Mercedes-Benz C 63 V8 Cabriolet, produced from 2018 to 2023 as part of the A205 facelift generation, represents the high-performance variant of the C-Class Cabriolet range. Positioned as the flagship model, it combined open-top motoring with the potent power of Mercedes-AMG’s 4.0-liter V8 engine. This iteration of the C 63 Cabriolet aimed to deliver a thrilling driving experience without sacrificing the luxury and refinement expected of a Mercedes-Benz. It served as a direct competitor to other high-performance convertibles like the BMW M4 Convertible and Audi S5 Cabriolet.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | C-class |
| Generation | C-class Cabriolet (A205, facelift 2018) |
| Type (Engine) | AMG C 63 V8 (476 Hp) MCT |
| Start of production | 2018 |
| End of production | 2023 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption at Low speed (WLTP) | 11.4 l/100 km (20.6 US mpg, 24.8 UK mpg, 8.8 km/l) |
| Fuel consumption at very high speed (WLTP) | 11.5 l/100 km (20.5 US mpg, 24.6 UK mpg, 8.7 km/l) |
| CO2 emissions (WLTP) | 257-261 g/km |
| Fuel consumption (economy) – urban | 14.5 l/100 km (16.2 US mpg, 19.5 UK mpg, 6.9 km/l) |
| Fuel consumption (economy) – extra urban | 8 l/100 km (29.4 US mpg, 35.3 UK mpg, 12.5 km/l) |
| Fuel consumption (economy) – combined | 10.4 l/100 km (22.6 US mpg, 27.2 UK mpg, 9.6 km/l) |
| CO2 emissions | 236 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 4.2 sec |
| Acceleration 0 – 62 mph | 4.2 sec |
| Acceleration 0 – 60 mph | 4 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6d |
| Weight-to-power ratio | 3.9 kg/Hp, 257.3 Hp/tonne |
| Weight-to-torque ratio | 2.8 kg/Nm, 351.4 Nm/tonne |
| Power | 476 Hp |
| Power per litre | 119.5 Hp/l |
| Torque | 650 Nm @ 1750-4500 rpm (479.42 lb.-ft. @ 1750-4500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 177.980 |
| Engine displacement | 3982 cm3 (243 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | BiTurbo, Intercooler |
| Engine oil capacity | 9 l (9.51 US qt | 7.92 UK qt) |
| Coolant | 11.1 l (11.73 US qt | 9.77 UK qt) |
| Kerb Weight | 1850 kg (4078.55 lbs.) |
| Max. weight | 2275 kg (5015.52 lbs.) |
| Max load | 425 kg (936.96 lbs.) |
| Trunk (boot) space – minimum | 285 l (10.06 cu. ft.) |
| Trunk (boot) space – maximum | 360 l (12.71 cu. ft.) |
| Fuel tank capacity | 66 l (17.44 US gal | 14.52 UK gal) |
| Length | 4751 mm (187.05 in.) |
| Width | 1877 mm (73.9 in.) |
| Height | 1404 mm (55.28 in.) |
| Wheelbase | 2840 mm (111.81 in.) |
| Front track | 1636 mm (64.41 in.) |
| Front overhang | 855 mm (33.66 in.) |
| Rear overhang | 1056 mm (41.57 in.) |
| Ride height (ground clearance) | 101 mm (3.98 in.) |
| Approach angle | 11.7° |
| Departure angle | 12.5° |
| Ramp-over (brakeover) angle | 9.1° |
| 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 | 9 gears, automatic transmission MCT AMG SPEEDSHIFT |
| 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 | Electric Steering |
| Tires size | 255/40 R18|285/35 R18 |
| Wheel rims size | 9J x 18|10.5J x 18 |
Powertrain & Engine Architecture
The heart of the C 63 Cabriolet is the M177.980 4.0-liter twin-turbocharged V8 engine. This engine, a cornerstone of AMG’s performance strategy, utilizes direct injection and features a ‘hot-vee’ configuration where the turbochargers are located within the V of the engine, contributing to a more compact design and improved responsiveness. The engine produces 476 horsepower and 650 Nm (479 lb-ft) of torque, available from a low 1750 rpm, providing strong acceleration throughout the rev range. The engine is paired with AMG’s MCT (Multi Clutch Technology) 9-speed automatic transmission. This transmission, based on the 9G-TRONIC, replaces the traditional torque converter with a wet multi-plate clutch, resulting in faster and more direct gear changes.
Driving Characteristics
The C 63 Cabriolet delivers a distinctly sporty driving experience. The combination of the powerful V8 engine and the quick-shifting MCT transmission allows for rapid acceleration – 0 to 60 mph in around 4 seconds. While the automatic transmission provides convenience, it’s tuned for performance, holding gears longer and downshifting quickly under hard acceleration. The suspension, while comfortable enough for everyday driving, is firm and controlled, minimizing body roll during cornering. The rear-wheel drive configuration contributes to a balanced feel, although traction can be a concern in wet conditions. Compared to the C 43 Cabriolet, the C 63 offers a significantly more potent and engaging driving experience, sacrificing some fuel economy for substantially increased performance.
Equipment & Trim Levels
The C 63 Cabriolet came generously equipped as standard. Key features included AMG-specific styling elements (body kit, wheels, exhaust), a premium interior with sport seats upholstered in Nappa leather, a performance steering wheel, and a comprehensive infotainment system with navigation. Optional extras included advanced driver-assistance systems (such as adaptive cruise control and lane-keeping assist), a Burmester surround sound system, and various interior trim options. The Airscarf system, which directs warm air onto the occupants’ necks, was a popular option for open-top driving in cooler climates.
Chassis & Braking
The C 63 Cabriolet features a sophisticated chassis designed to handle the engine’s power. It utilizes an independent multi-link suspension at both the front and rear, optimized for both comfort and handling. The braking system consists of ventilated discs on all four wheels, with large calipers providing ample stopping power. AMG-tuned ABS and stability control systems further enhance safety and control. The Cabriolet’s chassis was reinforced compared to the standard C-Class to compensate for the lack of a fixed roof, ensuring structural rigidity.
Market Reception & Comparison
The C 63 Cabriolet was generally well-received by automotive critics. It was praised for its powerful engine, engaging driving dynamics, and luxurious interior. However, some reviewers noted its relatively high fuel consumption and firm ride. Compared to the C 43 Cabriolet, the C 63 offered a significant performance upgrade but came at a higher price point. Against competitors like the BMW M4 Convertible and Audi S5 Cabriolet, the C 63 was often seen as offering a more aggressive and visceral driving experience, albeit with slightly less refinement.
Legacy
The A205 C 63 Cabriolet represents a compelling blend of performance and luxury. The M177 engine has proven to be robust and reliable, although regular maintenance is crucial. On the used car market, these models hold their value relatively well, particularly those with low mileage and a comprehensive service history. The C 63 Cabriolet remains a desirable option for enthusiasts seeking a high-performance open-top experience, offering a unique combination of AMG power and Mercedes-Benz refinement.
