The Comparative Analysis :

BMW i8 Roadster (18 - ..) vs. Mercedes SL 65 AMG SPEEDSHIFT PLUS (16 - 18)

€ 155,000
BMW i8 Roadster (18 - ..) BMW i8 Roadster
€ 240,200
 Mercedes SL 65 AMG SPEEDSHIFT PLUS (16 - 18) Mercedes SL 65 AMG
€ 155,000
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 240,200

ⓘ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 2.2 inches longer, 2.6 inches wider and 0.4 inches lower than the Mercedes SL 65 AMG.
BMW i8 Roadster
Mercedes SL 65 AMG
50.7
Blueprint BMW i8 Roadster (18 - ..)
76.5
87.3
51.2
Blueprint Mercedes SL 65 AMG SPEEDSHIFT PLUS (16 - 18)
73.9
82.6
76.5 in
Width
73.9 in
87.3 in
Width Incl. Mirrors
82.6 in
50.7 in
Height
51.2 in
Blueprint BMW i8 Roadster (18 - ..)
110.2
184.6
Blueprint Mercedes SL 65 AMG SPEEDSHIFT PLUS (16 - 18)
101.8
182.4
184.6 in
Length
182.4 in
110.2 in
Wheelbase
101.8 in

Vehicle Weight

BMW i8 Roadster
Mercedes SL 65 AMG
3682 lb
Curb Weight
4299 lb
4332 lb
Gross Vehicle
Weight
4872 lb
BMW i8 Roadster (18 - ..)
Weight Difference:
617 lb
14.35 %
Mercedes SL 65 AMG SPEEDSHIFT PLUS (16 - 18)

General

BMW i8 Roadster
Mercedes SL 65 AMG
I15
Generation
R231
Roadster
Car Body Style
Roadster
Premium Unleaded
Fuel Type
Premium 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 65 AMG
3-cylinder plug-in hybrid gasoline engine with tur­bo­charger
Engine Type
V12 gasoline engine with two tur­bo­chargers (bi­turbo)
BMW B38
Engine Series
Mercedes-Benz M 279
B38-K15
Engine Code
M 279.981
4
Valves
4
3
Cylinders
12
1.5 L / 73 cu in
Displacement
6 L / 294 cu in
369 hp
at 5800 rpm
Power
621 hp
at 4800 rpm
BMW i8 Roadster
369 hp
621 hp
Mercedes SL 65 AMG
420 lb‑ft
at 3700 rpm
Max. Torque
738 lb‑ft
at 2300 rpm
BMW i8 Roadster
420 lb‑ft
738 lb‑ft
Mercedes SL 65 AMG

Performance

BMW i8 Roadster
Mercedes SL 65 AMG
155 mph
Maximum Speed
155 mph
4.6 sec
Acceleration 0 to 62 mph
4 sec
62 mph 62
mph

210 ft
0.000 sec

BMW i8 Roadster

62 mph 62
mph

184 ft
0.000 sec

Mercedes SL 65 AMG

▶ REPLAY
9.98 lb/hp
Weight-to-Power Ratio
6.92 lb/hp
BMW i8 Roadster
9.98 lb/hp
6.92 lb/hp
Mercedes SL 65 AMG

Fuel Economy / Emissions

BMW i8 Roadster
Mercedes SL 65 AMG
Fuel Economy
118 mpg
combined
20 mpg
BMW i8 Roadster
118 mpg
20 mpg
Mercedes SL 65 AMG
No data
city
14 mpg
No data
highway
27 mpg
Kraftstoffanzeige
7.9 gal
Fuel Tank Capacity
19.8 gal
Kraftstoffanzeige
932 mi
Range
391 mi
BMW i8 Roadster
932 mi
391 mi
Mercedes SL 65 AMG
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).
225.5 kWh
BMW i8 Roadster
37.8 kWh
225.5 kWh
Mercedes SL 65 AMG
Euro 6d-TEMP-EVAP (WLTP)
Emission Standard
Euro 6b (NEFZ)
80 g/mi (WLTP)
CO2 Emissions
449 g/mi (NEFZ)

Practical Convenience

BMW i8 Roadster
Mercedes SL 65 AMG
3
Doors
2
2
No. of Seats
2
650 lb
Maximum Payload
573 lb
2.5 cu ft
Trunk Volume
14.3 cu ft
No data
Cargo Volume (Seats Down)
No data