The Comparative Analysis :
BMW 123d Automatic (07 - 12) vs. BMW 120i Steptronic 5-door (16 - 17)
€ 34,200

€ 32,600

€ 34,200
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 32,600
ⓘ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. Both cars are the same height, but the 123d is 9 cm shorter and 1.7 cm narrower.
123d
120i
1421
1748
1934
1421
1765
1984
1748 mm
Width
1765 mm
1934 mm
Width Incl. Mirrors
1984 mm
1421 mm
Height
1421 mm
2660
4239
2690
4329
4239 mm
Length
4329 mm
2660 mm
Wheelbase
2690 mm
Vehicle Weight
123d
120i
1485 kg
Kerb Weight
1455 kg
1910 kg
Gross Vehicle
Weight
Weight
1940 kg

Weight Difference:
30 kg
2.02 %

General
123d
120i
E81
Generation
F20
Hatchback
Car Body Style
Hatchback
Diesel
Fuel Type
Super Unleaded (98 RON)

Rear-wheel drive
Drive
Rear-wheel drive

6-speed automatic transmission
Transmission
8-speed automatic transmission
Engine
123d
120i
Straight-four diesel engine with two turbochargers (biturbo)
Engine Type
Straight-four petrol engine with turbocharger
BMW
Engine Series
BMW
4
Valves
4
4
Cylinders
4
1995 CC
Engine Capacity
1998 CC
201 bhp
at 4400 rpm
Power
181 bhp
at 5000 rpm
123d
201 bhp
181 bhp
120i
400 NM
at 2000 rpm
Max. Torque
290 NM
at 1350 rpm
123d
400 NM
290 NM
120i
Performance
123d
120i
147 mph
Maximum Speed
140 mph
7 sec
Acceleration 0 to 62 mph
7.1 sec
62 mph
62
mph
mph
97 m
0.000 sec

123d
62 mph
62
mph
mph
99 m
0.000 sec

120i
▶ REPLAY
7.39 kg/bhp
Weight-to-Power Ratio
8.04 kg/bhp
123d
7.39 kg/bhp
8.04 kg/bhp
120i
Fuel Economy / Emissions
123d
120i
Fuel Economy
51 mpg
combined
51 mpg
123d
51 mpg
51 mpg
120i
41 mpg
city
40 mpg
No data
motorway
No data
51 L
Fuel Tank Capacity
52 L
576 mi
Range
587 mi
123d
576 mi
587 mi
120i
Environmental Impact
113.1 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).
104.1 kWh
123d
113.1 kWh
104.1 kWh
120i
Euro 5
Emission Standard
Euro 6b (NEFZ)
145 g/km (NEFZ)
CO2 Emissions
126 g/km (NEFZ)
Practical Convenience
123d
120i
3
Doors
5
4
No. of Seats
5
425 kg
Maximum Payload
485 kg
330 L
Boot Capacity
360 L








1150 L
Boot Capacity (Seats Down)
1200 L