The Mercedes-Benz C 63 S 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 the AMG 4.0-liter V8 engine. This variant catered to drivers seeking a luxurious and exhilarating driving experience, blending the practicality of a convertible with the performance characteristics of a dedicated sports car. It served as a direct competitor to models like the BMW M8 Convertible and Audi S8 Cabriolet, offering a unique proposition within the premium convertible segment.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | C-class |
| Generation | C-class Cabriolet (A205, facelift 2018) |
| Type (Engine) | AMG C 63 S V8 (510 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) | 11.6 l/100 km (20.3 US mpg, 24.4 UK mpg, 8.6 km/l) |
| CO2 emissions (WLTP) | 258-262 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 | 4.1 sec |
| Acceleration 0 – 62 mph | 4.1 sec |
| Acceleration 0 – 60 mph | 3.9 sec |
| Maximum speed | 280 km/h (173.98 mph) |
| Emission standard | Euro 6d |
| Weight-to-power ratio | 3.7 kg/Hp, 273.5 Hp/tonne |
| Weight-to-torque ratio | 2.7 kg/Nm, 375.3 Nm/tonne |
| Power | 510 Hp |
| Power per litre | 128.1 Hp/l |
| Torque | 700 Nm @ 2000-4500 rpm (516.29 lb.-ft. @ 2000-4500 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 | 1865 kg (4111.62 lbs.) |
| Max. weight | 2280 kg (5026.54 lbs.) |
| Max load | 415 kg (914.92 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 | Rear wheel drive. Internal Combustion engine. |
| 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 | 255/35 R19|285/30 R19 |
| Wheel rims size | 9J x 19|10.5J x 19 |
Powertrain & Engine Architecture
At the heart of the C 63 S Cabriolet lies 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 510 horsepower and 700 Nm (516 lb-ft) of torque, available from 2000 to 4500 rpm. The engine is paired with the AMG SPEEDSHIFT MCT 9-speed automatic transmission. This transmission employs a wet multi-plate clutch instead of a traditional torque converter, resulting in faster and more direct gear changes. The drivetrain is rear-wheel drive, enhancing the sporty driving dynamics.
Driving Characteristics
The C 63 S Cabriolet delivers a thrilling driving experience. The combination of the powerful V8 engine and the quick-shifting MCT transmission results in a 0-60 mph time of just 3.9 seconds. The exhaust note is particularly aggressive, enhanced by AMG’s performance exhaust system. While the convertible body adds some weight compared to the coupe, the chassis is well-tuned to minimize body roll and maintain a composed feel in corners. The 9-speed transmission offers closely spaced gear ratios, keeping the engine within its power band for optimal acceleration. Compared to lower-powered C-Class Cabriolet models, the C 63 S offers a significantly more visceral and engaging driving experience, prioritizing performance over fuel efficiency.
Equipment & Trim Levels
The C 63 S Cabriolet came standard with a comprehensive list of features, including AMG-specific styling elements, a performance exhaust system, adaptive suspension, and a premium interior. Standard interior features included leather upholstery, heated and ventilated front seats, a Burmester surround sound system, and a large infotainment display with navigation. Optional extras included carbon fiber trim, performance seats, and advanced driver-assistance systems like lane keeping assist and adaptive cruise control. The interior design focused on a sporty aesthetic, with AMG badging and unique trim options.
Chassis & Braking
The C 63 S Cabriolet features an independent multi-link suspension at both the front and rear, optimized for performance handling. The suspension is electronically controlled, allowing drivers to adjust the damping characteristics to suit their preferences. Braking duties are handled by ventilated discs on all four wheels, with large calipers providing ample stopping power. The car is equipped with ABS, electronic stability control, and other advanced braking assistance systems. The chassis was reinforced compared to standard C-Class Cabriolet models to handle the increased power and torque of the AMG engine.
Market Reception & Comparison
The C 63 S Cabriolet was generally well-received by automotive critics, praised for its powerful engine, engaging driving dynamics, and luxurious interior. However, some reviewers noted the relatively firm ride quality and the limited trunk space, typical of convertible models. Compared to the standard C-Class Cabriolet models, the C 63 S offered a significant performance upgrade but came at a substantial price premium. Fuel economy was also considerably lower than the base models. Against competitors like the BMW M8 Convertible, the C 63 S was often seen as offering a more focused and raw driving experience.
Legacy
The M177 engine family, including the one found in the C 63 S Cabriolet, has proven to be relatively reliable, although maintenance costs can be higher than those of naturally aspirated engines. The AMG SPEEDSHIFT MCT transmission has also demonstrated good durability. On the used car market, the C 63 S Cabriolet holds its value well, appealing to enthusiasts seeking a high-performance convertible with a prestigious badge. Regular maintenance, including oil changes and inspections of the turbochargers, is crucial for ensuring the long-term reliability of this potent powertrain.
