The Comparative Analysis :

Mercedes SL 500 9G-TRONIC (16 - ..) vs. BMW i8 Roadster (18 - ..)

€ 123,100
Mercedes SL 500 9G-TRONIC (16 - ..) Mercedes SL 500
€ 155,000
 BMW i8 Roadster (18 - ..) BMW i8 Roadster
€ 123,100
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 155,000

ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info

Vehicle Dimensions

The dimensions of these vehicles differ slightly. The Mercedes SL 500 is 2.3 inches shorter, 2.6 inches narrower and an inch taller than the BMW i8 Roadster.
Mercedes SL 500
BMW i8 Roadster
51.8
Blueprint Mercedes SL 500 9G-TRONIC (16 - ..)
73.9
82.6
50.7
Blueprint BMW i8 Roadster (18 - ..)
76.5
87.3
73.9 in
Width
76.5 in
82.6 in
Width Incl. Mirrors
87.3 in
51.8 in
Height
50.7 in
Blueprint Mercedes SL 500 9G-TRONIC (16 - ..)
101.8
182.3
Blueprint BMW i8 Roadster (18 - ..)
110.2
184.6
182.3 in
Length
184.6 in
101.8 in
Wheelbase
110.2 in

Vehicle Weight

Mercedes SL 500
BMW i8 Roadster
3957 lb
Curb Weight
3682 lb
4795 lb
Gross Vehicle
Weight
4332 lb
Mercedes SL 500 9G-TRONIC (16 - ..)
Weight Difference:
276 lb
6.97 %
BMW i8 Roadster (18 - ..)

General

Mercedes SL 500
BMW i8 Roadster
R231
Generation
I15
Roadster
Car Body Style
Roadster
Mid-Grade Unleaded
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
On-demand four-wheel drive (4WD) with automatic engagement
9-speed automatic transmission
Transmission
6-speed automatic transmission

Engine

Mercedes SL 500
BMW i8 Roadster
V8 gasoline engine with two tur­bo­chargers (bi­turbo)
Engine Type
3-cylinder plug-in hybrid gasoline engine with tur­bo­charger
Mercedes-Benz M 278
Engine Series
BMW B38
M 278.927
Engine Code
B38-K15
4
Valves
4
8
Cylinders
3
4.7 L / 230 cu in
Displacement
1.5 L / 73 cu in
450 hp
at 5250 rpm
Power
369 hp
at 5800 rpm
Mercedes SL 500
450 hp
369 hp
BMW i8 Roadster
516 lb‑ft
at 1800 rpm
Max. Torque
420 lb‑ft
at 3700 rpm
Mercedes SL 500
516 lb‑ft
420 lb‑ft
BMW i8 Roadster

Performance

Mercedes SL 500
BMW i8 Roadster
155 mph
Maximum Speed
155 mph
4.3 sec
Acceleration 0 to 62 mph
4.6 sec
62 mph 62
mph

197 ft
0.000 sec

Mercedes SL 500

62 mph 62
mph

210 ft
0.000 sec

BMW i8 Roadster

▶ REPLAY
8.79 lb/hp
Weight-to-Power Ratio
9.98 lb/hp
Mercedes SL 500
8.79 lb/hp
9.98 lb/hp
BMW i8 Roadster

Fuel Economy / Emissions

Mercedes SL 500
BMW i8 Roadster
Fuel Economy
26 mpg
combined
118 mpg
Mercedes SL 500
26 mpg
118 mpg
BMW i8 Roadster
19 mpg
city
No data
34 mpg
highway
No data
Kraftstoffanzeige
17.2 gal
Fuel Tank Capacity
7.9 gal
Kraftstoffanzeige
449 mi
Range
932 mi
Mercedes SL 500
449 mi
932 mi
BMW i8 Roadster
Environmental Impact
170.4 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).
37.8 kWh
Mercedes SL 500
170.4 kWh
37.8 kWh
BMW i8 Roadster
Euro 6
Emission Standard
Euro 6d-TEMP-EVAP (WLTP)
330 g/mi (NEFZ)
CO2 Emissions
80 g/mi (WLTP)

Practical Convenience

Mercedes SL 500
BMW i8 Roadster
2
Doors
3
2
No. of Seats
2
838 lb
Maximum Payload
650 lb
14.3 cu ft
Trunk Volume
2.5 cu ft
No data
Cargo Volume (Seats Down)
No data