The Comparative Analysis :
BMW 640i Gran Coupé Steptronic (13 - 14) vs. BMW i8 Coupé (14 - 18)
€ 79,900
€ 134,000
€ 79,900
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 134,000
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The dimensions of these vehicles differ considerably. The 640i Gran Coupé is 12.5 inches longer, 1.9 inches narrower and 3.9 inches taller than the i8 Coupé.
640i Gran Coupé
i8 Coupé
54.8
74.6
81.9
50.9
76.5
87.3
74.6 in
Width
76.5 in
81.9 in
Width Incl. Mirrors
87.3 in
54.8 in
Height
50.9 in
116.9
197.1
110.2
184.6
197.1 in
Length
184.6 in
116.9 in
Wheelbase
110.2 in
Vehicle Weight
640i Gran Coupé
i8 Coupé
4023 lb
Curb Weight
3439 lb
5203 lb
Gross Vehicle
Weight
Weight
4090 lb
Weight Difference:
584 lb
14.51 %
General
640i Gran Coupé
i8 Coupé
F06
Generation
I12
Coupe
Car Body Style
Coupe
Premium Unleaded
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
On-demand four-wheel drive (4WD) with automatic engagement
8-speed automatic transmission
Transmission
6-speed automatic transmission
Engine
640i Gran Coupé
i8 Coupé
Straight-six gasoline engine with turbocharger
Engine Type
3-cylinder plug-in hybrid gasoline engine with turbocharger
BMW N55
Engine Series
BMW B38
N55-B30
Engine Code
B38-K15
4
Valves
4
6
Cylinders
3
3 L / 147 cu in
Displacement
1.5 L / 73 cu in
316 hp
at 5800 rpm
Power
357 hp
at 5800 rpm
640i Gran Coupé
316 hp
357 hp
i8 Coupé
332 lb‑ft
at 1300 rpm
Max. Torque
420 lb‑ft
at 3700 rpm
640i Gran Coupé
332 lb‑ft
420 lb‑ft
i8 Coupé
Performance
640i Gran Coupé
i8 Coupé
155 mph
Maximum Speed
155 mph
5.4 sec
Acceleration 0 to 62 mph
4.4 sec
62 mph
62
mph
mph
246 ft
0.000 sec
640i Gran Coupé
62 mph
62
mph
mph
200 ft
0.000 sec
i8 Coupé
▶ REPLAY
12.73 lb/hp
Weight-to-Power Ratio
9.63 lb/hp
640i Gran Coupé
12.73 lb/hp
9.63 lb/hp
i8 Coupé
Fuel Economy / Emissions
640i Gran Coupé
i8 Coupé
Fuel Economy
30 mpg
combined
112 mpg
640i Gran Coupé
30 mpg
112 mpg
i8 Coupé
22 mpg
city
No data
No data
highway
No data
18.5 gal
Fuel Tank Capacity
7.9 gal
557 mi
Range
888 mi
640i Gran Coupé
557 mi
888 mi
i8 Coupé
Environmental Impact
147.7 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).
39.8 kWh
640i Gran Coupé
147.7 kWh
39.8 kWh
i8 Coupé
Euro 6b (NEFZ)
Emission Standard
Euro 6b (NEFZ)
291 g/mi (NEFZ)
CO2 Emissions
79 g/mi (NEFZ)
Practical Convenience
640i Gran Coupé
i8 Coupé
4
Doors
3
5
No. of Seats
4
1179 lb
Maximum Payload
650 lb
13 cu ft
Trunk Volume
4.4 cu ft
No data
Cargo Volume (Seats Down)
No data
