Compare Mercedes SL R231 facelift vs Alfa Romeo 8C Spider vs Mercedes AMG GT Roadster
Variants
SL 63 AMG Euro6d
SL 63 AMG
SL 65 AMG
SL 400 Euro6d
SL 400
SL 500 Euro6d
SL 500
GT
GT C
GT S
Capacity
Cargo Capacity
165 L / 5.8 cu-ft
Coolant Capacity
12.5 L / 13.2 qt
Engine Oil Capacity
9.0 L / 9.5 qt
7.0 L / 7.4 qt
Fuel Capacity
88.0 L / 23.2 gal
65.0 L / 17.2 gal
Passengers
2
2
2
Payload
180 kg / 397 lbs
Chassis
Brakes | Front
Ventilated discs, 380x32 mm
Ventilated discs
Brakes | Rear
Ventilated discs, 360x32 mm
Ventilated discs
Offroad | Approach Angle
9.5 deg
Offroad | Breakover Angle
9.4 deg
Offroad | Departure Angle
14.0 deg
Power Steering
Electric Steering
Electric Steering
Suspension | Front
Multi-link
Double-wishbone
Double-wishbone
Suspension | Rear
Multi-link
Double-wishbone
Double-wishbone
Tire Size
Front wheel tires: 245/35 R 20 Rear wheel tires: 285/35 R 20
Turning Circle
10.4 m / 34.1 ft
Construction
Body Style
2-door Convertible
2-door Convertible
2-door Convertible
Dimensions
Ground Clearance
140 mm / 5.5 in
96 mm / 3.8 in
Size | Height
1366 mm / 53.8 in
Size | Length
4381 mm / 172.5 in
Size | Width
1877 mm / 73.9 in | 2099 mm / 82.6 in (mirror unfolded)
1892 mm / 74.5 in | 2055 mm / 80.9 in (mirror unfolded)
1939 mm / 76.3 in | 2075 mm / 81.7 in (mirror unfolded)
Track Width | Front
1600.0 mm / 63.0 in
1590.0 mm / 62.6 in
Track Width | Rear
1604.0 mm / 63.1 in
1589.0 mm / 62.6 in
1651.0 mm / 65.0 in
Weight
1675.0 kg / 3692.7 lbs
Wheel Size
Front wheel rims: 9 J x 20 Rear wheel rims: 10.5 J x 20
Wheelbase
2585 mm / 101.8 in
2645 mm / 104.1 in
2630 mm / 103.5 in
Performance
Acceleration | 0 - 100 km/h
4.4 sec
Acceleration | 0 - 60 mph
4.2 sec
Braking | 100 km/h - 0
33.0 m / 108.2 ft
Braking | 200 km/h - 0
143.9 m / 472.0 ft
CO2 Emission
377 g/km
Coefficient Of Drag
0.38
Fuel Economy
15.8 L/100km / 14.9 MPG (combined)
Top Speed
250.0 km/h / 155.3 mph
290.0 km/h / 180.2 mph
Powertrain
Drivetrain Layout
Front-engine (longitudinal), Rear-wheel drive
Front-engine (longitudinal), Rear-wheel drive
Front-engine (longitudinal), Rear-wheel drive
Emission Standard
Euro 5
Engine
AR8C
M 178 DE 40 AL
Engine | Bore
94.0 mm / 3.7 in
Engine | Compression Ratio
11.3:1
Engine | Displacement
4.7 L / 286.3 cu-in / 4691.0 cc
4.0 L / 243.0 cu-in / 3982.0 cc
Engine | Power
450.0 hp / 335.6 kW @ 7000 rpm
Engine | Redline
7500 rpm
Engine | Specific Output
95.9 hp/L / 1.6 hp/cu-in
Engine | Stroke
84.5 mm / 3.3 in
Engine | Torque
480 Nm / 354.0 lb-ft @ 4750 rpm
Engine | Type
Naturally-aspirated multi-port injected petrol V8 DOHC engine with 4 values per cylinder
Bi-turbocharged direct-injected petrol V8 engine with 4 values per cylinder
Transmission | Gears
6-speed
7-speed
Transmission | Type
Manual
Double clutch transmission (DCT)
Production
Availability
2008 ~ 2010
2017
Reviews
Neofiliac score
96%
87%
91%
Pros
- Last chance to get V12 in a hardtop Mercedes
- Still possible to get the M278 and M157 powered V8s
- New 9G-Tronic automatic
- Sexy styling
- Small turning circle
- Great handling characteristics
- Good performance overall
- Relatively tight and light
- Robust drivetrain
Cons
- More generic styling
- Euro 6d-related reliability issues
- Essentially a Maserati GranCabrio, but much more expensive
- High 0.38 drag coefficient
- Very little cargo space
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