The Comparative Analysis :
BMW M135i Steptronic (12 - 15) vs. BMW 123d Automatic (07 - 12)
€ 42,100
€ 34,200
€ 42,100
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 34,200
ⓘ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 123d.
M135i
123d
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
123d
3340 lb
Curb Weight
3274 lb
4343 lb
Gross Vehicle
Weight
Weight
4211 lb
Weight Difference:
66 lb
1.98 %
General
M135i
123d
F21
Generation
E81
Hatchback
Car Body Style
Hatchback
Premium Unleaded
Fuel Type
Diesel
Rear-wheel drive
Drivetrain
Rear-wheel drive
8-speed automatic transmission
Transmission
6-speed automatic transmission
Engine
M135i
123d
Straight-six gasoline engine with turbocharger
Engine Type
Straight-four diesel engine with two turbochargers (biturbo)
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
201 hp
at 4400 rpm
M135i
316 hp
201 hp
123d
332 lb‑ft
at 1300 rpm
Max. Torque
295 lb‑ft
at 2000 rpm
M135i
332 lb‑ft
295 lb‑ft
123d
Performance
M135i
123d
155 mph
Maximum Speed
147 mph
4.9 sec
Acceleration 0 to 62 mph
7 sec
62 mph
62
mph
mph
223 ft
0.000 sec
M135i
62 mph
62
mph
mph
318 ft
0.000 sec
123d
▶ REPLAY
10.57 lb/hp
Weight-to-Power Ratio
16.29 lb/hp
M135i
10.57 lb/hp
16.29 lb/hp
123d
Fuel Economy / Emissions
M135i
123d
Fuel Economy
31 mpg
combined
43 mpg
M135i
31 mpg
43 mpg
123d
23 mpg
city
34 mpg
No data
highway
No data
13.7 gal
Fuel Tank Capacity
13.5 gal
431 mi
Range
576 mi
M135i
431 mi
576 mi
123d
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).
113.1 kWh
M135i
142.1 kWh
113.1 kWh
123d
Euro 5
Emission Standard
Euro 5
282 g/mi (NEFZ)
CO2 Emissions
233 g/mi (NEFZ)
Practical Convenience
M135i
123d
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
