The Comparative Analysis :
BMW M135i Steptronic (12 - 15) vs. BMW 120i Automatic (07 - 12)
€ 42,100
€ 28,600
€ 42,100
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 28,600
ⓘ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. The M135i is 3.3 inches longer, 0.7 inches wider and 0.4 inches lower than the 120i.
M135i
120i
55.6
69.5
78.1
55.9
68.8
76.1
69.5 in
Width
68.8 in
78.1 in
Width Incl. Mirrors
76.1 in
55.6 in
Height
55.9 in
105.9
170.2
104.7
166.9
170.2 in
Length
166.9 in
105.9 in
Wheelbase
104.7 in
Vehicle Weight
M135i
120i
3340 lb
Curb Weight
3053 lb
4343 lb
Gross Vehicle
Weight
Weight
3990 lb
Weight Difference:
287 lb
8.59 %
General
M135i
120i
F21
Generation
E81
Hatchback
Car Body Style
Hatchback
Premium Unleaded
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
Rear-wheel drive
8-speed automatic transmission
Transmission
6-speed automatic transmission
Engine
M135i
120i
Straight-six gasoline engine with turbocharger
Engine Type
Straight-four gasoline engine (naturally aspirated engine)
BMW
Engine Series
BMW
4
Valves
4
6
Cylinders
4
3 L / 147 cu in
Displacement
2 L / 98 cu in
316 hp
at 5800 rpm
Power
168 hp
at 6700 rpm
M135i
316 hp
168 hp
120i
332 lb‑ft
at 1300 rpm
Max. Torque
155 lb‑ft
at 4250 rpm
M135i
332 lb‑ft
155 lb‑ft
120i
Performance
M135i
120i
155 mph
Maximum Speed
138 mph
4.9 sec
Acceleration 0 to 62 mph
8.3 sec
62 mph
62
mph
mph
223 ft
0.000 sec
M135i
62 mph
62
mph
mph
377 ft
0.000 sec
120i
▶ REPLAY
10.57 lb/hp
Weight-to-Power Ratio
18.17 lb/hp
M135i
10.57 lb/hp
18.17 lb/hp
120i
Fuel Economy / Emissions
M135i
120i
Fuel Economy
31 mpg
combined
36 mpg
M135i
31 mpg
36 mpg
120i
23 mpg
city
26 mpg
No data
highway
No data
13.7 gal
Fuel Tank Capacity
14 gal
431 mi
Range
499 mi
M135i
431 mi
499 mi
120i
Environmental Impact
142.1 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).
125 kWh
M135i
142.1 kWh
125 kWh
120i
Euro 5
Emission Standard
Euro 5
282 g/mi (NEFZ)
CO2 Emissions
249 g/mi (NEFZ)
Practical Convenience
M135i
120i
3
Doors
3
4
No. of Seats
4
1003 lb
Maximum Payload
937 lb
10.2 cu ft
Trunk Volume
9.3 cu ft
34 cu ft
Cargo Volume (Seats Down)
32.6 cu ft
