The Comparative Analysis :

BMW 318i Coupé (10 - 13) vs. BMW 420i Coupé Steptronic (16 - 17)

€ 31,700
BMW 318i Coupé (10 - 13) 318i Coupé
€ 39,700
BMW 420i Coupé Steptronic (16 - 17) 420i Coupé
€ 31,700
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 39,700

Base price of a new vehicle with standard equipment in Germany at market launch. Price Info

Vehicle Dimensions

The dimensions of these vehicles differ a little. The 318i Coupé is an inch shorter, 1.7 inches narrower and 0.7 inches taller than the 420i Coupé.
318i Coupé
420i Coupé
54.9
Blueprint BMW 318i Coupé (10 - 13)
70.2
78.1
54.2
Blueprint BMW 420i Coupé Steptronic (16 - 17)
71.9
79.4
70.2 in
Width
71.9 in
78.1 in
Width Incl. Mirrors
79.4 in
54.9 in
Height
54.2 in
Blueprint BMW 318i Coupé (10 - 13)
108.7
181.6
Blueprint BMW 420i Coupé Steptronic (16 - 17)
110.6
182.6
181.6 in
Length
182.6 in
108.7 in
Wheelbase
110.6 in

Vehicle Weight

318i Coupé
420i Coupé
3164 lb
Curb Weight
3461 lb
3990 lb
Gross Vehicle
Weight
4442 lb
BMW 318i Coupé (10 - 13)
Weight Difference:
298 lb
8.61 %
BMW 420i Coupé Steptronic (16 - 17)

General

318i Coupé
420i Coupé
E92
Generation
F32
Coupe
Car Body Style
Coupe
Premium Unleaded
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
Rear-wheel drive
6-speed manual transmission
Transmission
8-speed automatic transmission

Engine

318i Coupé
420i Coupé
Straight-four gasoline engine (nat­u­ral­ly as­pi­rat­ed engine)
Engine Type
Straight-four gasoline engine with tur­bo­charger
BMW N43
Engine Series
BMW B48
N43-B20
Engine Code
B48-B20
4
Valves
4
4
Cylinders
4
2 L / 98 cu in
Displacement
2 L / 98 cu in
141 hp
at 6000 rpm
Power
181 hp
at 5000 rpm
318i Coupé
141 hp
181 hp
420i Coupé
140 lb‑ft
at 4250 rpm
Max. Torque
199 lb‑ft
at 1350 rpm
318i Coupé
140 lb‑ft
199 lb‑ft
420i Coupé

Performance

318i Coupé
420i Coupé
130 mph
Maximum Speed
147 mph
9.1 sec
Acceleration 0 to 62 mph
7.5 sec
62 mph 62
mph

413 ft
0.000 sec

318i Coupé

62 mph 62
mph

341 ft
0.000 sec

420i Coupé

 REPLAY
22.44 lb/hp
Weight-to-Power Ratio
19.12 lb/hp
318i Coupé
22.44 lb/hp
19.12 lb/hp
420i Coupé

Fuel Economy / Emissions

318i Coupé
420i Coupé
Fuel Economy
37 mpg
combined
43 mpg
318i Coupé
37 mpg
43 mpg
420i Coupé
29 mpg
city
33 mpg
No data
highway
No data
Kraftstoffanzeige
16.6 gal
Fuel Tank Capacity
15.9 gal
Kraftstoffanzeige
621 mi
Range
678 mi
318i Coupé
621 mi
678 mi
420i Coupé
Environmental Impact
119.4 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).
104.1 kWh
318i Coupé
119.4 kWh
104.1 kWh
420i Coupé
Euro 5
Emission Standard
Euro 6b (NEFZ)
235 g/mi (NEFZ)
CO2 Emissions
204 g/mi (NEFZ)

Practical Convenience

318i Coupé
420i Coupé
2
Doors
2
4
No. of Seats
4
827 lb
Maximum Payload
981 lb
12.5 cu ft
Trunk Volume
12.6 cu ft
No data
Cargo Volume (Seats Down)
No data