The Comparative Analysis :

BMW i8 Coupé (18 - ..) vs. BMW 640i Gran Coupé Steptronic (13 - 14)

€ 138,000
BMW i8 Coupé (18 - ..) i8 Coupé
€ 79,900
 BMW 640i Gran Coupé Steptronic (13 - 14) 640i Gran Coupé
€ 138,000
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 79,900

ⓘ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 12.5 inches shorter, 1.9 inches wider and 4 inches lower than the 640i Gran Coupé.
i8 Coupé
640i Gran Coupé
50.8
Blueprint BMW i8 Coupé (18 - ..)
76.5
87.3
54.8
Blueprint BMW 640i Gran Coupé Steptronic (13 - 14)
74.6
81.9
76.5 in
Width
74.6 in
87.3 in
Width Incl. Mirrors
81.9 in
50.8 in
Height
54.8 in
Blueprint BMW i8 Coupé (18 - ..)
110.2
184.6
Blueprint BMW 640i Gran Coupé Steptronic (13 - 14)
116.9
197.1
184.6 in
Length
197.1 in
110.2 in
Wheelbase
116.9 in

Vehicle Weight

i8 Coupé
640i Gran Coupé
3549 lb
Curb Weight
4023 lb
4200 lb
Gross Vehicle
Weight
5203 lb
BMW i8 Coupé (18 - ..)
Weight Difference:
474 lb
11.78 %
BMW 640i Gran Coupé Steptronic (13 - 14)

General

i8 Coupé
640i Gran Coupé
I12
Generation
F06
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 Gran 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
369 hp
at 5800 rpm
Power
316 hp
at 5800 rpm
i8 Coupé
369 hp
316 hp
640i Gran Coupé
420 lb‑ft
at 3700 rpm
Max. Torque
332 lb‑ft
at 1300 rpm
i8 Coupé
420 lb‑ft
332 lb‑ft
640i Gran Coupé

Performance

i8 Coupé
640i Gran Coupé
155 mph
Maximum Speed
155 mph
4.4 sec
Acceleration 0 to 62 mph
5.4 sec
62 mph 62
mph

200 ft
0.000 sec

i8 Coupé

62 mph 62
mph

246 ft
0.000 sec

640i Gran Coupé

▶ REPLAY
9.62 lb/hp
Weight-to-Power Ratio
12.73 lb/hp
i8 Coupé
9.62 lb/hp
12.73 lb/hp
640i Gran Coupé

Fuel Economy / Emissions

i8 Coupé
640i Gran Coupé
Fuel Economy
131 mpg
combined
30 mpg
i8 Coupé
131 mpg
30 mpg
640i Gran Coupé
No data
city
22 mpg
No data
highway
No data
Kraftstoffanzeige
7.9 gal
Fuel Tank Capacity
18.5 gal
Kraftstoffanzeige
1036 mi
Range
557 mi
i8 Coupé
1036 mi
557 mi
640i Gran Coupé
Environmental Impact
34.1 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).
147.7 kWh
i8 Coupé
34.1 kWh
147.7 kWh
640i Gran Coupé
Euro 6d-TEMP-EVAP (WLTP)
Emission Standard
Euro 6b (NEFZ)
77 g/mi (WLTP)
CO2 Emissions
291 g/mi (NEFZ)

Practical Convenience

i8 Coupé
640i Gran Coupé
3
Doors
4
4
No. of Seats
5
650 lb
Maximum Payload
1179 lb
4.4 cu ft
Trunk Volume
13 cu ft
No data
Cargo Volume (Seats Down)
No data