The Comparative Analysis :
BMW M3 (14 - 18) vs. BMW 320i Steptronic (15 - 18)
€ 71,800
€ 40,000
€ 71,800
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 40,000
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The dimensions of these vehicles differ slightly. The M3 is 1.5 inches longer, 2.6 inches wider and 0.2 inches lower than the 320i.
M3
320i
56.1
73.9
80.2
56.3
71.3
80
73.9 in
Width
71.3 in
80.2 in
Width Incl. Mirrors
80 in
56.1 in
Height
56.3 in
110.7
183.9
110.6
182.4
183.9 in
Length
182.4 in
110.7 in
Wheelbase
110.6 in
Vehicle Weight
M3
320i
3516 lb
Curb Weight
3362 lb
4630 lb
Gross Vehicle
Weight
Weight
4464 lb
Weight Difference:
154 lb
4.38 %
General
M3
320i
F80
Generation
F30
Sedan
Car Body Style
Sedan
Premium Unleaded
Fuel Type
Premium Unleaded

Rear-wheel drive
Drivetrain
Rear-wheel drive

6-speed manual transmission
Transmission
8-speed automatic transmission
Engine
M3
320i
Straight-six gasoline engine with two turbochargers (biturbo)
Engine Type
Straight-four gasoline engine with turbocharger
BMW S55
Engine Series
BMW B48
S55-B30
Engine Code
B48-B20

4
Valves
4
6
Cylinders
4
3 L / 147 cu in
Displacement
2 L / 98 cu in
425 hp
at 5500 rpm
Power
181 hp
at 5000 rpm
M3
425 hp
181 hp
320i
406 lb‑ft
at 1850 rpm
Max. Torque
199 lb‑ft
at 1350 rpm
M3
406 lb‑ft
199 lb‑ft
320i
Performance
M3
320i
155 mph
Maximum Speed
146 mph
4.3 sec
Acceleration 0 to 62 mph
7.3 sec
62 mph
62
mph
mph
197 ft
0.000 sec
M3
62 mph
62
mph
mph
331 ft
0.000 sec
320i
▶ REPLAY
8.27 lb/hp
Weight-to-Power Ratio
18.57 lb/hp
M3
8.27 lb/hp
18.57 lb/hp
320i
Fuel Economy / Emissions
M3
320i
Fuel Economy
27 mpg
combined
44 mpg
M3
27 mpg
44 mpg
320i
20 mpg
city
34 mpg
No data
highway
No data
15.9 gal
Fuel Tank Capacity
15.9 gal
424 mi
Range
703 mi
M3
424 mi
703 mi
320i
Environmental Impact
166.7 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).
100.4 kWh
M3
166.7 kWh
100.4 kWh
320i
Euro 6b (NEFZ)
Emission Standard
Euro 6b (NEFZ)
328 g/mi (NEFZ)
CO2 Emissions
200 g/mi (NEFZ)
Practical Convenience
M3
320i
4
Doors
4
5
No. of Seats
5
1113 lb
Maximum Payload
1102 lb
13.6 cu ft
Trunk Volume
13.6 cu ft










No data
Cargo Volume (Seats Down)
No data











