The Comparative Analysis :
BMW i8 Coupé (14 - 18) vs. BMW 640i Coupé Steptronic (15 - 17)
€ 134,000
€ 81,900
€ 134,000
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 81,900
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The dimensions of these vehicles differ considerably. The i8 Coupé is 8.1 inches shorter, 1.9 inches wider and 3 inches lower than the 640i Coupé.
i8 Coupé
640i Coupé
50.9
76.5
87.3
53.9
74.6
81.9
76.5 in
Width
74.6 in
87.3 in
Width Incl. Mirrors
81.9 in
50.9 in
Height
53.9 in
110.2
184.6
112.4
192.7
184.6 in
Length
192.7 in
110.2 in
Wheelbase
112.4 in
Vehicle Weight
i8 Coupé
640i Coupé
3439 lb
Curb Weight
3880 lb
4090 lb
Gross Vehicle
Weight
Weight
4872 lb
Weight Difference:
441 lb
11.37 %
General
i8 Coupé
640i Coupé
I12
Generation
F13
Coupe
Car Body Style
Coupe
Premium Unleaded
Fuel Type
Premium Unleaded
On-demand four-wheel drive (4WD) with automatic engagement
Drivetrain
Rear-wheel drive
6-speed automatic transmission
Transmission
8-speed automatic transmission
Engine
i8 Coupé
640i Coupé
3-cylinder plug-in hybrid gasoline engine with turbocharger
Engine Type
Straight-six gasoline engine with turbocharger
BMW B38
Engine Series
BMW N55
B38-K15
Engine Code
N55-B30
4
Valves
4
3
Cylinders
6
1.5 L / 73 cu in
Displacement
3 L / 147 cu in
357 hp
at 5800 rpm
Power
316 hp
at 5800 rpm
i8 Coupé
357 hp
316 hp
640i Coupé
420 lb‑ft
at 3700 rpm
Max. Torque
332 lb‑ft
at 1300 rpm
i8 Coupé
420 lb‑ft
332 lb‑ft
640i Coupé
Performance
i8 Coupé
640i Coupé
155 mph
Maximum Speed
155 mph
4.4 sec
Acceleration 0 to 62 mph
5.3 sec
62 mph
62
mph
mph
200 ft
0.000 sec
i8 Coupé
62 mph
62
mph
mph
243 ft
0.000 sec
640i Coupé
▶ REPLAY
9.63 lb/hp
Weight-to-Power Ratio
12.28 lb/hp
i8 Coupé
9.63 lb/hp
12.28 lb/hp
640i Coupé
Fuel Economy / Emissions
i8 Coupé
640i Coupé
Fuel Economy
112 mpg
combined
31 mpg
i8 Coupé
112 mpg
31 mpg
640i Coupé
No data
city
22 mpg
No data
highway
No data
7.9 gal
Fuel Tank Capacity
18.5 gal
888 mi
Range
572 mi
i8 Coupé
888 mi
572 mi
640i Coupé
Environmental Impact
39.8 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).
144 kWh
i8 Coupé
39.8 kWh
144 kWh
640i Coupé
Euro 6b (NEFZ)
Emission Standard
Euro 6b (NEFZ)
79 g/mi (NEFZ)
CO2 Emissions
285 g/mi (NEFZ)
Practical Convenience
i8 Coupé
640i Coupé
3
Doors
2
4
No. of Seats
4
650 lb
Maximum Payload
992 lb
4.4 cu ft
Trunk Volume
13 cu ft
No data
Cargo Volume (Seats Down)
No data
