The Comparative Analysis :
Porsche 911 Speedster (19 - ..) vs. BMW i8 Roadster (18 - ..)
€ 269,300
€ 155,000
€ 269,300
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 Porsche 911 Speedster is considerably smaller in every dimension. It's 12.7 cm shorter, 9 cm narrower and 3.9 cm lower than the BMW i8 Roadster.
Porsche 911 Speedster
BMW i8 Roadster
1250
1852
1978
1289
1942
2218
1852 mm
Width
1942 mm
1978 mm
Width Incl. Mirrors
2218 mm
1250 mm
Height
1289 mm
2457
4562
2800
4689
4562 mm
Length
4689 mm
2457 mm
Wheelbase
2800 mm
Vehicle Weight
Porsche 911 Speedster
BMW i8 Roadster
1540 kg
Kerb Weight
1670 kg
1793 kg
Gross Vehicle
Weight
Weight
1965 kg
Weight Difference:
130 kg
7.78 %
General
Porsche 911 Speedster
BMW i8 Roadster
991
Generation
I15
Roadster
Car Body Style
Roadster
Super Unleaded (98 RON)
Fuel Type
Super Unleaded (98 RON)
Rear-wheel drive
Drive
On-demand four-wheel drive with automatic engagement
6-speed manual transmission
Transmission
6-speed automatic transmission
Engine
Porsche 911 Speedster
BMW i8 Roadster
6-cylinder boxer petrol engine (naturally aspirated engine)
Engine Type
3-cylinder plug-in hybrid petrol engine with turbocharger
Engine Series
BMW B38
Engine Code
B38-K15
4
Valves
4
6
Cylinders
3
3996 CC
Engine Capacity
1499 CC
503 bhp
at 8400 rpm
Power
369 bhp
at 5800 rpm
Porsche 911 Speedster
503 bhp
369 bhp
BMW i8 Roadster
470 NM
at 6250 rpm
Max. Torque
570 NM
at 3700 rpm
Porsche 911 Speedster
470 NM
570 NM
BMW i8 Roadster
Performance
Porsche 911 Speedster
BMW i8 Roadster
193 mph
Maximum Speed
155 mph
4 sec
Acceleration 0 to 62 mph
4.6 sec
62 mph
62
mph
mph
56 m
0.000 sec
Porsche 911 Speedster
62 mph
62
mph
mph
64 m
0.000 sec
BMW i8 Roadster
▶ REPLAY
3.06 kg/bhp
Weight-to-Power Ratio
4.53 kg/bhp
Porsche 911 Speedster
3.06 kg/bhp
4.53 kg/bhp
BMW i8 Roadster
Fuel Economy / Emissions
Porsche 911 Speedster
BMW i8 Roadster
Fuel Economy
20 mpg
combined
141 mpg
Porsche 911 Speedster
20 mpg
141 mpg
BMW i8 Roadster
14 mpg
city
No data
29 mpg
motorway
No data
64 L
Fuel Tank Capacity
30 L
288 mi
Range
932 mi
Porsche 911 Speedster
288 mi
932 mi
BMW i8 Roadster
Environmental Impact
261.5 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).
37.8 kWh
Porsche 911 Speedster
261.5 kWh
37.8 kWh
BMW i8 Roadster
Euro 6d-TEMP-EVAP-ISC (WLTP) 36CH, 36CI, 36DG
Emission Standard
Euro 6d-TEMP-EVAP (WLTP)
310 g/km (WLTP)
CO2 Emissions
50 g/km (WLTP)
Practical Convenience
Porsche 911 Speedster
BMW i8 Roadster
2
Doors
3
2
No. of Seats
2
253 kg
Maximum Payload
295 kg
125 L
Boot Capacity
88 L
No data
Boot Capacity (Seats Down)
No data
