The Comparative Analysis :

BMW M135i Steptronic Sport (15 - 16) vs. BMW 125i Steptronic (12 - 15)

€ 44,500
BMW M135i Steptronic Sport (15 - 16) M135i
€ 34,300
BMW 125i Steptronic (12 - 15) 125i
€ 44,500
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 34,300

Base price of a new vehicle with standard equipment in Germany at market launch. Price Info

Vehicle Dimensions

Тhere is barely any difference in dimensions between the two vehicles. Both cars are the same length and width, but the M135i is 0.4 inches lower.
M135i
125i
55.6
Blueprint BMW M135i Steptronic Sport (15 - 16)
69.5
78.1
55.9
Blueprint BMW 125i Steptronic (12 - 15)
69.5
78.1
69.5 in
Width
69.5 in
78.1 in
Width Incl. Mirrors
78.1 in
55.6 in
Height
55.9 in
Blueprint BMW M135i Steptronic Sport (15 - 16)
105.9
170.2
Blueprint BMW 125i Steptronic (12 - 15)
105.9
170.2
170.2 in
Length
170.2 in
105.9 in
Wheelbase
105.9 in

Vehicle Weight

M135i
125i
3351 lb
Curb Weight
3186 lb
4431 lb
Gross Vehicle
Weight
4189 lb
BMW M135i Steptronic Sport (15 - 16)
Weight Difference:
165 lb
4.92 %
BMW 125i Steptronic (12 - 15)

General

M135i
125i
F21
Generation
F21
Hatchback
Car Body Style
Hatchback
Premium Unleaded
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
Rear-wheel drive
8-speed automatic transmission
Transmission
8-speed automatic transmission

Engine

M135i
125i
Straight-six gasoline engine with tur­bo­charger
Engine Type
Straight-four gasoline engine with tur­bo­charger
BMW
Engine Series
BMW
4
Valves
4
6
Cylinders
4
3 L / 147 cu in
Displacement
2 L / 98 cu in
322 hp
at 5800 rpm
Power
215 hp
at 5000 rpm
M135i
322 hp
215 hp
125i
332 lb‑ft
at 1300 rpm
Max. Torque
229 lb‑ft
at 1350 rpm
M135i
332 lb‑ft
229 lb‑ft
125i

Performance

M135i
125i
155 mph
Maximum Speed
151 mph
4.9 sec
Acceleration 0 to 62 mph
6.2 sec
62 mph 62
mph

223 ft
0.000 sec

M135i

62 mph 62
mph

282 ft
0.000 sec

125i

 REPLAY
10.41 lb/hp
Weight-to-Power Ratio
14.82 lb/hp
M135i
10.41 lb/hp
14.82 lb/hp
125i

Fuel Economy / Emissions

M135i
125i
Fuel Economy
31 mpg
combined
37 mpg
M135i
31 mpg
37 mpg
125i
23 mpg
city
28 mpg
No data
highway
No data
Kraftstoffanzeige
13.7 gal
Fuel Tank Capacity
13.7 gal
Kraftstoffanzeige
431 mi
Range
513 mi
M135i
431 mi
513 mi
125i
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).
119.4 kWh
M135i
142.1 kWh
119.4 kWh
125i
Euro 6b (NEFZ)
Emission Standard
Euro 6b (NEFZ)
282 g/mi (NEFZ)
CO2 Emissions
238 g/mi (NEFZ)

Practical Convenience

M135i
125i
3
Doors
3
4
No. of Seats
4
1080 lb
Maximum Payload
1003 lb
10.2 cu ft
Trunk Volume
10.2 cu ft
34 cu ft
Cargo Volume (Seats Down)
34 cu ft