The Comparative Analysis :
BMW 320si (06 - 07) vs. BMW M3 M DKG (08 - 11)
€ 33,000

€ 69,800

€ 33,000
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 69,800
ⓘ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. Both cars are the same width, but the 320si is 2.4 inches shorter and an inch lower.
320si
M3
55.9
71.5
78.3
57
71.5
78.9
71.5 in
Width
71.5 in
78.3 in
Width Incl. Mirrors
78.9 in
55.9 in
Height
57 in
108.7
178
108.7
180.3
178 in
Length
180.3 in
108.7 in
Wheelbase
108.7 in
Vehicle Weight
320si
M3
3075 lb
Curb Weight
3748 lb
4057 lb
Gross Vehicle
Weight
Weight
4740 lb

Weight Difference:
672 lb
17.93 %

General
320si
M3
E90
Generation
E90
Sedan
Car Body Style
Sedan
Premium Unleaded
Fuel Type
Premium Unleaded

Rear-wheel drive
Drivetrain
Rear-wheel drive

6-speed manual transmission
Transmission
7-speed dual clutch transmission
Engine
320si
M3
Straight-four gasoline engine (naturally aspirated engine)
Engine Type
V8 gasoline engine (naturally aspirated engine)
BMW N45
Engine Series
BMW S65
N45-B20
Engine Code
S65-B40

4
Valves
4
4
Cylinders
8
2 L / 98 cu in
Displacement
4 L / 196 cu in
171 hp
at 7000 rpm
Power
414 hp
at 8300 rpm
320si
171 hp
414 hp
M3
148 lb‑ft
at 4250 rpm
Max. Torque
295 lb‑ft
at 3900 rpm
320si
148 lb‑ft
295 lb‑ft
M3
Performance
320si
M3
140 mph
Maximum Speed
155 mph
8.1 sec
Acceleration 0 to 62 mph
4.7 sec
62 mph
62
mph
mph
371 ft
0.000 sec

320si
62 mph
62
mph
mph
213 ft
0.000 sec

M3
▶ REPLAY
17.98 lb/hp
Weight-to-Power Ratio
9.05 lb/hp
320si
17.98 lb/hp
9.05 lb/hp
M3
Fuel Economy / Emissions
320si
M3
Fuel Economy
26 mpg
combined
20 mpg
320si
26 mpg
20 mpg
M3
18 mpg
city
14 mpg
No data
highway
No data
16.6 gal
Fuel Tank Capacity
16.6 gal
440 mi
Range
329 mi
320si
440 mi
329 mi
M3
Environmental Impact
168.7 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).
225.5 kWh
320si
168.7 kWh
225.5 kWh
M3
Euro 4
Emission Standard
Euro 4
344 g/mi (NEFZ)
CO2 Emissions
459 g/mi (NEFZ)
Practical Convenience
320si
M3
4
Doors
4
5
No. of Seats
5
981 lb
Maximum Payload
992 lb
13 cu ft
Trunk Volume
12.7 cu ft









No data
Cargo Volume (Seats Down)
No data