The Comparative Analysis :
Opel Astra 1.4 ECOTEC CNG (17 - 18) vs. BMW 120i Automatic (07 - 12)
€ 25,100

€ 28,600

€ 25,100
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 Opel Astra 1.4 ECOTEC CNG is considerably bigger in every dimension. It's 5.2 inches longer, 2.4 inches wider and 2.5 inches taller than the BMW 120i.
Opel Astra 1.4 ECOTEC CNG
BMW 120i
58.5
71.2
80.4
55.9
68.8
76.1
71.2 in
Width
68.8 in
80.4 in
Width Incl. Mirrors
76.1 in
58.5 in
Height
55.9 in
104.8
172
104.7
166.9
172 in
Length
166.9 in
104.8 in
Wheelbase
104.7 in
Vehicle Weight
Opel Astra 1.4 ECOTEC CNG
BMW 120i
3007 lb
Curb Weight
3053 lb
4167 lb
Gross Vehicle
Weight
Weight
3990 lb

Weight Difference:
46 lb
1.51 %

General
Opel Astra 1.4 ECOTEC CNG
BMW 120i
B-K
Generation
E81
Hatchback
Car Body Style
Hatchback
Natural Gas (CNG)
Fuel Type
Premium Unleaded

Front-wheel drive
Drivetrain
Rear-wheel drive

6-speed manual transmission
Transmission
6-speed automatic transmission
Engine
Opel Astra 1.4 ECOTEC CNG
BMW 120i
Straight-four engine (naturally aspirated engine)
Engine Type
Straight-four gasoline engine (naturally aspirated engine)
Engine Series
BMW
4
Valves
4
4
Cylinders
4
1.4 L / 69 cu in
Displacement
2 L / 98 cu in
108 hp
at 5600 rpm
Power
168 hp
at 6700 rpm
Opel Astra 1.4 ECOTEC CNG
108 hp
168 hp
BMW 120i
148 lb‑ft
at 2000 rpm
Max. Torque
155 lb‑ft
at 4250 rpm
Opel Astra 1.4 ECOTEC CNG
148 lb‑ft
155 lb‑ft
BMW 120i
Performance
Opel Astra 1.4 ECOTEC CNG
BMW 120i
124 mph
Maximum Speed
138 mph
10.9 sec
Acceleration 0 to 62 mph
8.3 sec
62 mph
62
mph
mph
495 ft
0.000 sec

Opel Astra 1.4 ECOTEC CNG
62 mph
62
mph
mph
377 ft
0.000 sec

BMW 120i
▶ REPLAY
27.84 lb/hp
Weight-to-Power Ratio
18.17 lb/hp
Opel Astra 1.4 ECOTEC CNG
27.84 lb/hp
18.17 lb/hp
BMW 120i
Fuel Economy / Emissions
Opel Astra 1.4 ECOTEC CNG
BMW 120i
Fuel Economy
14.5 lb✽
( 6 MPGe ⓘ Miles per gallon gasoline equivalent (MPGe) is a measure of the average distance traveled per unit of energy consumed. MPGe, specified in miles per U.S. gallon, is used to compare the energy consumption of vehicles that use different energy sources.)
combined ✽ per 100 miles
36 mpg
Opel Astra 1.4 ECOTEC CNG
6 MPGe
36 mpg
BMW 120i
19.9 lb
city
26 mpg
11.7 lb
highway
No data
42 lb
Fuel Tank Capacity
14 gal
288 mi
Range
499 mi
Opel Astra 1.4 ECOTEC CNG
288 mi
499 mi
BMW 120i
Environmental Impact
30.1 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
Opel Astra 1.4 ECOTEC CNG
30.1 kWh
125 kWh
BMW 120i
Euro 6b (NEFZ)
Emission Standard
Euro 5
182 g/mi (NEFZ)
CO2 Emissions
249 g/mi (NEFZ)
Practical Convenience
Opel Astra 1.4 ECOTEC CNG
BMW 120i
5
Doors
3
5
No. of Seats
4
1160 lb
Maximum Payload
937 lb
10.5 cu ft
Trunk Volume
9.3 cu ft









34.3 cu ft
Cargo Volume (Seats Down)
32.6 cu ft