The Comparative Analysis :
BMW 318i Steptronic (15 - 18) vs. BMW 320si (06 - 07)
€ 35,600

€ 33,000

€ 35,600
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 33,000
ⓘ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 318i is 11.3 cm longer, 0.6 cm narrower and 0.8 cm taller than the 320si.
318i
320si
1429
1811
2031
1421
1817
1989
1811 mm
Width
1817 mm
2031 mm
Width Incl. Mirrors
1989 mm
1429 mm
Height
1421 mm
2810
4633
2760
4520
4633 mm
Length
4520 mm
2810 mm
Wheelbase
2760 mm
Vehicle Weight
318i
320si
1500 kg
Kerb Weight
1395 kg
2000 kg
Gross Vehicle
Weight
Weight
1840 kg

Weight Difference:
105 kg
7 %

General
318i
320si
F30
Generation
E90
Saloon
Car Body Style
Saloon
Super Unleaded (98 RON)
Fuel Type
Super Unleaded (98 RON)

Rear-wheel drive
Drive
Rear-wheel drive

8-speed automatic transmission
Transmission
6-speed manual transmission
Engine
318i
320si
Straight-three petrol engine with turbocharger
Engine Type
Straight-four petrol engine (naturally aspirated engine)
BMW B38
Engine Series
BMW N45
B38-B15
Engine Code
N45-B20

4
Valves
4
3
Cylinders
4
1499 CC
Engine Capacity
1997 CC
134 bhp
at 4400 rpm
Power
171 bhp
at 7000 rpm
318i
134 bhp
171 bhp
320si
220 NM
at 1250 rpm
Max. Torque
200 NM
at 4250 rpm
318i
220 NM
200 NM
320si
Performance
318i
320si
130 mph
Maximum Speed
140 mph
9.1 sec
Acceleration 0 to 62 mph
8.1 sec
62 mph
62
mph
mph
126 m
0.000 sec

318i
62 mph
62
mph
mph
113 m
0.000 sec

320si
▶ REPLAY
11.19 kg/bhp
Weight-to-Power Ratio
8.16 kg/bhp
318i
11.19 kg/bhp
8.16 kg/bhp
320si
Fuel Economy / Emissions
318i
320si
Fuel Economy
56 mpg
combined
32 mpg
318i
56 mpg
32 mpg
320si
46 mpg
city
22 mpg
No data
motorway
No data
60 L
Fuel Tank Capacity
63 L
746 mi
Range
440 mi
318i
746 mi
440 mi
320si
Environmental Impact
94.8 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).
168.7 kWh
318i
94.8 kWh
168.7 kWh
320si
Euro 6b (NEFZ)
Emission Standard
Euro 4
116 g/km (NEFZ)
CO2 Emissions
214 g/km (NEFZ)
Practical Convenience
318i
320si
4
Doors
4
5
No. of Seats
5
500 kg
Maximum Payload
445 kg
480 L
Boot Capacity
460 L










No data
Boot Capacity (Seats Down)
No data