The Comparative Analysis :
BMW 428i Convertible xDrive Steptronic (14 - 15) vs. Mercedes C 63 S AMG Convertible 4MATIC AMG SPEEDSHIFT TCT 9G-TRONIC (18 - ..)
€ 52,900

€ 94,000

€ 52,900
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 94,000
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The BMW 428i Cabrio is slightly smaller in every dimension. It's 4.4 inches shorter, 2 inches narrower and 0.2 inches lower than the Mercedes C 63 S AMG Convertible.
BMW 428i Cabrio
Mercedes C 63 S AMG Convertible
55.1
71.9
79.4
55.3
73.9
79.4
71.9 in
Width
73.9 in
79.4 in
Width Incl. Mirrors
79.4 in
55.1 in
Height
55.3 in
110.6
182.6
111.8
187
182.6 in
Length
187 in
110.6 in
Wheelbase
111.8 in
Vehicle Weight
BMW 428i Cabrio
Mercedes C 63 S AMG Convertible
4068 lb
Curb Weight
4277 lb
4894 lb
Gross Vehicle
Weight
Weight
5027 lb

Weight Difference:
209 lb
4.89 %

General
BMW 428i Cabrio
Mercedes C 63 S AMG Convertible
F33
Generation
A205
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded

Permanent all-wheel drive (AWD)
Drivetrain
Permanent all-wheel drive (AWD)

8-speed automatic transmission
Transmission
9-speed automatic transmission
Engine
BMW 428i Cabrio
Mercedes C 63 S AMG Convertible
Straight-four gasoline engine with turbocharger
Engine Type
V8 gasoline engine with two turbochargers (biturbo)
BMW N20
Engine Series
Mercedes-Benz M 177
N20-B20
Engine Code
M 177.980


4
Valves
4
4
Cylinders
8
2 L / 98 cu in
Displacement
4 L / 196 cu in
242 hp
at 5000 rpm
Power
503 hp
at 5500 rpm
BMW 428i Cabrio
242 hp
503 hp
Mercedes C 63 S AMG Convertible
258 lb‑ft
at 1250 rpm
Max. Torque
516 lb‑ft
at 2000 rpm
BMW 428i Cabrio
258 lb‑ft
516 lb‑ft
Mercedes C 63 S AMG Convertible
Performance
BMW 428i Cabrio
Mercedes C 63 S AMG Convertible
155 mph
Maximum Speed
174 mph
6.5 sec
Acceleration 0 to 62 mph
4.1 sec
62 mph
62
mph
mph
295 ft
0.000 sec

BMW 428i Cabrio
62 mph
62
mph
mph
187 ft
0.000 sec

Mercedes C 63 S AMG Convertible
▶ REPLAY
16.81 lb/hp
Weight-to-Power Ratio
8.5 lb/hp
BMW 428i Cabrio
16.81 lb/hp
8.5 lb/hp
Mercedes C 63 S AMG Convertible
Fuel Economy / Emissions
BMW 428i Cabrio
Mercedes C 63 S AMG Convertible
Fuel Economy
34 mpg
combined
23 mpg
BMW 428i Cabrio
34 mpg
23 mpg
Mercedes C 63 S AMG Convertible
26 mpg
city
16 mpg
No data
highway
29 mpg
15.9 gal
Fuel Tank Capacity
17.4 gal
533 mi
Range
395 mi
BMW 428i Cabrio
533 mi
395 mi
Mercedes C 63 S AMG Convertible
Environmental Impact
132.6 kWh
Total Energy Consumption
per 100 miles ⓘThe total energy consumption per 100 miles is the amount of energy consumed by a vehicle when burning fuel or using electricity per 100 miles (final energy), and the energy required to produce the appropriate amount of fuel or electricity (primary energy).
per 100 miles ⓘThe total energy consumption per 100 miles is the amount of energy consumed by a vehicle when burning fuel or using electricity per 100 miles (final energy), and the energy required to produce the appropriate amount of fuel or electricity (primary energy).
197 kWh
BMW 428i Cabrio
132.6 kWh
197 kWh
Mercedes C 63 S AMG Convertible
Euro 6b (NEFZ)
Emission Standard
Euro 6d-TEMP
262 g/mi (NEFZ)
CO2 Emissions
415 g/mi (WLTP)
Practical Convenience
BMW 428i Cabrio
Mercedes C 63 S AMG Convertible
2
Doors
2
4
No. of Seats
4
827 lb
Maximum Payload
750 lb
10.5 cu ft
Trunk Volume
10.1 cu ft









No data
Cargo Volume (Seats Down)
No data