The Comparative Analysis :
BMW 320i Automatic (05 - 07) vs. BMW M3 (14 - 18)
€ 31,000
€ 71,800
€ 31,000
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 71,800
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The 320i is considerably smaller in every dimension. It's 5.9 inches shorter, 2.4 inches narrower and 0.1 inches lower than the M3.
320i
M3
55.9
71.5
78.3
56.1
73.9
80.2
71.5 in
Width
73.9 in
78.3 in
Width Incl. Mirrors
80.2 in
55.9 in
Height
56.1 in
108.7
178
110.7
183.9
178 in
Length
183.9 in
108.7 in
Wheelbase
110.7 in
Vehicle Weight
320i
M3
3142 lb
Curb Weight
3516 lb
4123 lb
Gross Vehicle
Weight
Weight
4630 lb
Weight Difference:
375 lb
10.66 %
General
320i
M3
E90
Generation
F80
Sedan
Car Body Style
Sedan
Mid-Grade Unleaded
Fuel Type
Premium Unleaded

Rear-wheel drive
Drivetrain
Rear-wheel drive

6-speed automatic transmission
Transmission
6-speed manual transmission
Engine
320i
M3
Straight-four gasoline engine (naturally aspirated engine)
Engine Type
Straight-six gasoline engine with two turbochargers (biturbo)
BMW N46
Engine Series
BMW S55
N46-B20
Engine Code
S55-B30

4
Valves
4
4
Cylinders
6
2 L / 98 cu in
Displacement
3 L / 147 cu in
148 hp
at 6200 rpm
Power
425 hp
at 5500 rpm
320i
148 hp
425 hp
M3
148 lb‑ft
at 3600 rpm
Max. Torque
406 lb‑ft
at 1850 rpm
320i
148 lb‑ft
406 lb‑ft
M3
Performance
320i
M3
134 mph
Maximum Speed
155 mph
9.7 sec
Acceleration 0 to 62 mph
4.3 sec
62 mph
62
mph
mph
443 ft
0.000 sec
320i
62 mph
62
mph
mph
197 ft
0.000 sec
M3
▶ REPLAY
21.23 lb/hp
Weight-to-Power Ratio
8.27 lb/hp
320i
21.23 lb/hp
8.27 lb/hp
M3
Fuel Economy / Emissions
320i
M3
Fuel Economy
30 mpg
combined
27 mpg
320i
30 mpg
27 mpg
M3
21 mpg
city
20 mpg
No data
highway
No data
16.6 gal
Fuel Tank Capacity
15.9 gal
495 mi
Range
424 mi
320i
495 mi
424 mi
M3
Environmental Impact
149.7 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).
166.7 kWh
320i
149.7 kWh
166.7 kWh
M3
Euro 4
Emission Standard
Euro 6b (NEFZ)
306 g/mi (NEFZ)
CO2 Emissions
328 g/mi (NEFZ)
Practical Convenience
320i
M3
4
Doors
4
5
No. of Seats
5
981 lb
Maximum Payload
1113 lb
13 cu ft
Trunk Volume
13.6 cu ft










No data
Cargo Volume (Seats Down)
No data
















