The Comparative Analysis :
Mercedes SL 63 AMG SPEEDSHIFT MCT (12 - 15) vs. Alfa Romeo 8C Spider (08 - 10)
€ 160,600

€ 211,300

€ 160,600
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 211,300
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The dimensions of these vehicles differ considerably. The Mercedes SL 63 AMG is 9.3 inches longer, 0.7 inches narrower and 0.3 inches taller than the Alfa Romeo 8C Spider.
Mercedes SL 63 AMG
Alfa Romeo 8C Spider
51.8
73.9
82.6
51.5
74.6
82.4
73.9 in
Width
74.6 in
82.6 in
Width Incl. Mirrors
82.4 in
51.8 in
Height
51.5 in
101.8
181.8
104.1
172.5
181.8 in
Length
172.5 in
101.8 in
Wheelbase
104.1 in
Vehicle Weight
Mercedes SL 63 AMG
Alfa Romeo 8C Spider
4068 lb
Curb Weight
3858 lb
4806 lb
Gross Vehicle
Weight
Weight
4090 lb

Weight Difference:
209 lb
5.14 %

General
Mercedes SL 63 AMG
Alfa Romeo 8C Spider
R231
Generation
Typ 920
Roadster
Car Body Style
Roadster
Premium Unleaded
Fuel Type
Mid-Grade Unleaded

Rear-wheel drive
Drivetrain
Rear-wheel drive

7-speed automatic transmission
Transmission
6-speed automated manual transmission (AMT)
Engine
Mercedes SL 63 AMG
Alfa Romeo 8C Spider
V8 gasoline engine with turbocharger
Engine Type
V8 gasoline engine (naturally aspirated engine)
Mercedes-Benz M 157
Engine Series
M 157.983
Engine Code
AR 8C

4
Valves
4
8
Cylinders
8
5.5 L / 269 cu in
Displacement
4.7 L / 230 cu in
530 hp
at 5500 rpm
Power
444 hp
at 7000 rpm
Mercedes SL 63 AMG
530 hp
444 hp
Alfa Romeo 8C Spider
590 lb‑ft
at 2600 rpm
Max. Torque
354 lb‑ft
at 4750 rpm
Mercedes SL 63 AMG
590 lb‑ft
354 lb‑ft
Alfa Romeo 8C Spider
Performance
Mercedes SL 63 AMG
Alfa Romeo 8C Spider
155 mph
Maximum Speed
181 mph
4.3 sec
Acceleration 0 to 62 mph
4.5 sec
62 mph
62
mph
mph
197 ft
0.000 sec

Mercedes SL 63 AMG
62 mph
62
mph
mph
207 ft
0.000 sec

Alfa Romeo 8C Spider
▶ REPLAY
7.68 lb/hp
Weight-to-Power Ratio
8.69 lb/hp
Mercedes SL 63 AMG
7.68 lb/hp
8.69 lb/hp
Alfa Romeo 8C Spider
Fuel Economy / Emissions
Mercedes SL 63 AMG
Alfa Romeo 8C Spider
Fuel Economy
24 mpg
combined
15 mpg
Mercedes SL 63 AMG
24 mpg
15 mpg
Alfa Romeo 8C Spider
17 mpg
city
No data
31 mpg
highway
No data
19.8 gal
Fuel Tank Capacity
23.2 gal
471 mi
Range
346 mi
Mercedes SL 63 AMG
471 mi
346 mi
Alfa Romeo 8C Spider
Environmental Impact
187.5 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).
299.3 kWh
Mercedes SL 63 AMG
187.5 kWh
299.3 kWh
Alfa Romeo 8C Spider
Euro 5
Emission Standard
Euro 5
372 g/mi (NEFZ)
CO2 Emissions
607 g/mi (NEFZ)
Practical Convenience
Mercedes SL 63 AMG
Alfa Romeo 8C Spider
2
Doors
2
2
No. of Seats
2
739 lb
Maximum Payload
231 lb
14.3 cu ft
Trunk Volume
1.1 cu ft





No data
Cargo Volume (Seats Down)
No data