The Comparative Analysis :
BMW i8 Roadster (18 - ..) vs. Mercedes SL 350 7G-TRONIC PLUS (11 - 14)
€ 155,000
€ 95,900
€ 155,000
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 95,900
ⓘ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 BMW i8 Roadster is 2.8 inches longer, 2.6 inches wider and an inch lower than the Mercedes SL 350.
BMW i8 Roadster
Mercedes SL 350
50.7
76.5
87.3
51.8
73.9
82.6
76.5 in
Width
73.9 in
87.3 in
Width Incl. Mirrors
82.6 in
50.7 in
Height
51.8 in
110.2
184.6
101.8
181.8
184.6 in
Length
181.8 in
110.2 in
Wheelbase
101.8 in
Vehicle Weight
BMW i8 Roadster
Mercedes SL 350
3682 lb
Curb Weight
3715 lb
4332 lb
Gross Vehicle
Weight
Weight
4553 lb
Weight Difference:
33 lb
0.89 %
General
BMW i8 Roadster
Mercedes SL 350
I15
Generation
R231
Roadster
Car Body Style
Roadster
Premium Unleaded
Fuel Type
Mid-Grade Unleaded
On-demand four-wheel drive (4WD) with automatic engagement
Drivetrain
Rear-wheel drive
6-speed automatic transmission
Transmission
7-speed automatic transmission
Engine
BMW i8 Roadster
Mercedes SL 350
3-cylinder plug-in hybrid gasoline engine with turbocharger
Engine Type
V6 gasoline engine (naturally aspirated engine)
BMW B38
Engine Series
Mercedes-Benz M 276
B38-K15
Engine Code
M 276.954
4
Valves
4
3
Cylinders
6
1.5 L / 73 cu in
Displacement
3.5 L / 171 cu in
369 hp
at 5800 rpm
Power
302 hp
at 6500 rpm
BMW i8 Roadster
369 hp
302 hp
Mercedes SL 350
420 lb‑ft
at 3700 rpm
Max. Torque
273 lb‑ft
at 3500 rpm
BMW i8 Roadster
420 lb‑ft
273 lb‑ft
Mercedes SL 350
Performance
BMW i8 Roadster
Mercedes SL 350
155 mph
Maximum Speed
155 mph
4.6 sec
Acceleration 0 to 62 mph
5.9 sec
62 mph
62
mph
mph
210 ft
0.000 sec
BMW i8 Roadster
62 mph
62
mph
mph
269 ft
0.000 sec
Mercedes SL 350
▶ REPLAY
9.98 lb/hp
Weight-to-Power Ratio
12.3 lb/hp
BMW i8 Roadster
9.98 lb/hp
12.3 lb/hp
Mercedes SL 350
Fuel Economy / Emissions
BMW i8 Roadster
Mercedes SL 350
Fuel Economy
118 mpg
combined
35 mpg
BMW i8 Roadster
118 mpg
35 mpg
Mercedes SL 350
No data
city
25 mpg
No data
highway
44 mpg
7.9 gal
Fuel Tank Capacity
17.2 gal
932 mi
Range
594 mi
BMW i8 Roadster
932 mi
594 mi
Mercedes SL 350
Environmental Impact
37.8 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).
128.7 kWh
BMW i8 Roadster
37.8 kWh
128.7 kWh
Mercedes SL 350
Euro 6d-TEMP-EVAP (WLTP)
Emission Standard
Euro 5
80 g/mi (WLTP)
CO2 Emissions
256 g/mi (NEFZ)
Practical Convenience
BMW i8 Roadster
Mercedes SL 350
3
Doors
2
2
No. of Seats
2
650 lb
Maximum Payload
838 lb
2.5 cu ft
Trunk Volume
14.3 cu ft
No data
Cargo Volume (Seats Down)
No data
