The Comparative Analysis :

Mercedes SL 65 AMG SPEEDSHIFT PLUS (12 - 16) vs. BMW i8 Roadster (18 - ..)

€ 238,800
Mercedes SL 65 AMG SPEEDSHIFT PLUS (12 - 16) Mercedes SL 65 AMG
€ 155,000
 BMW i8 Roadster (18 - ..) BMW i8 Roadster
€ 238,800
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 65 AMG is 2.8 inches shorter, 2.6 inches narrower and an inch taller than the BMW i8 Roadster.
Mercedes SL 65 AMG
BMW i8 Roadster
51.8
Blueprint Mercedes SL 65 AMG SPEEDSHIFT PLUS (12 - 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 65 AMG SPEEDSHIFT PLUS (12 - 16)
101.8
181.8
Blueprint BMW i8 Roadster (18 - ..)
110.2
184.6
181.8 in
Length
184.6 in
101.8 in
Wheelbase
110.2 in

Vehicle Weight

Mercedes SL 65 AMG
BMW i8 Roadster
4299 lb
Curb Weight
3682 lb
5038 lb
Gross Vehicle
Weight
4332 lb
Mercedes SL 65 AMG SPEEDSHIFT PLUS (12 - 16)
Weight Difference:
617 lb
14.35 %
BMW i8 Roadster (18 - ..)

General

Mercedes SL 65 AMG
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
7-speed automatic transmission
Transmission
6-speed automatic transmission

Engine

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

Performance

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

184 ft
0.000 sec

Mercedes SL 65 AMG

62 mph 62
mph

210 ft
0.000 sec

BMW i8 Roadster

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

Fuel Economy / Emissions

Mercedes SL 65 AMG
BMW i8 Roadster
Fuel Economy
20 mpg
combined
118 mpg
Mercedes SL 65 AMG
20 mpg
118 mpg
BMW i8 Roadster
14 mpg
city
No data
28 mpg
highway
No data
Kraftstoffanzeige
19.8 gal
Fuel Tank Capacity
7.9 gal
Kraftstoffanzeige
402 mi
Range
932 mi
Mercedes SL 65 AMG
402 mi
932 mi
BMW i8 Roadster
Environmental Impact
219.8 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).
37.8 kWh
Mercedes SL 65 AMG
219.8 kWh
37.8 kWh
BMW i8 Roadster
Euro 5 / Euro 6
Emission Standard
Euro 6d-TEMP-EVAP (WLTP)
435 g/mi (NEFZ)
CO2 Emissions
80 g/mi (WLTP)

Practical Convenience

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