The Comparative Analysis :
Opel Astra 1.4 ECOTEC CNG (17 - 18) vs. Mazda 3 SKYACTIV-G 120 SKYACTIV-Drive (17 - 19)
€ 25,100

€ 23,100

€ 25,100
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 23,100
ⓘ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 Opel Astra 1.4 ECOTEC CNG is 3.9 inches shorter, 0.6 inches wider and 0.8 inches taller than the Mazda 3 SKYACTIV-G 120.
Opel Astra 1.4 ECOTEC CNG
Mazda 3 SKYACTIV-G 120
58.5
71.2
80.4
57.7
70.7
80.8
71.2 in
Width
70.7 in
80.4 in
Width Incl. Mirrors
80.8 in
58.5 in
Height
57.7 in
104.8
172
106.3
176
172 in
Length
176 in
104.8 in
Wheelbase
106.3 in
Vehicle Weight
Opel Astra 1.4 ECOTEC CNG
Mazda 3 SKYACTIV-G 120
3007 lb
Curb Weight
2910 lb
4167 lb
Gross Vehicle
Weight
Weight
4045 lb

Weight Difference:
97 lb
3.23 %

General
Opel Astra 1.4 ECOTEC CNG
Mazda 3 SKYACTIV-G 120
B-K
Generation
BM
Hatchback
Car Body Style
Hatchback
Natural Gas (CNG)
Fuel Type
Mid-Grade Unleaded

Front-wheel drive
Drivetrain
Front-wheel drive

6-speed manual transmission
Transmission
6-speed automatic transmission
Engine
Opel Astra 1.4 ECOTEC CNG
Mazda 3 SKYACTIV-G 120
Straight-four engine (naturally aspirated engine)
Engine Type
Straight-four gasoline engine (naturally aspirated engine)
4
Valves
4
4
Cylinders
4
1.4 L / 69 cu in
Displacement
2 L / 98 cu in
108 hp
at 5600 rpm
Power
118 hp
at 6000 rpm
Opel Astra 1.4 ECOTEC CNG
108 hp
118 hp
Mazda 3 SKYACTIV-G 120
148 lb‑ft
at 2000 rpm
Max. Torque
155 lb‑ft
at 4000 rpm
Opel Astra 1.4 ECOTEC CNG
148 lb‑ft
155 lb‑ft
Mazda 3 SKYACTIV-G 120
Performance
Opel Astra 1.4 ECOTEC CNG
Mazda 3 SKYACTIV-G 120
124 mph
Maximum Speed
121 mph
10.9 sec
Acceleration 0 to 62 mph
10.4 sec
62 mph
62
mph
mph
495 ft
0.000 sec

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

Mazda 3 SKYACTIV-G 120
▶ REPLAY
27.84 lb/hp
Weight-to-Power Ratio
24.66 lb/hp
Opel Astra 1.4 ECOTEC CNG
27.84 lb/hp
24.66 lb/hp
Mazda 3 SKYACTIV-G 120
Fuel Economy / Emissions
Opel Astra 1.4 ECOTEC CNG
Mazda 3 SKYACTIV-G 120
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
42 mpg
Opel Astra 1.4 ECOTEC CNG
6 MPGe
42 mpg
Mazda 3 SKYACTIV-G 120
19.9 lb
city
34 mpg
11.7 lb
highway
49 mpg
42 lb
Fuel Tank Capacity
13.5 gal
288 mi
Range
566 mi
Opel Astra 1.4 ECOTEC CNG
288 mi
566 mi
Mazda 3 SKYACTIV-G 120
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).
106.1 kWh
Opel Astra 1.4 ECOTEC CNG
30.1 kWh
106.1 kWh
Mazda 3 SKYACTIV-G 120
Euro 6b (NEFZ)
Emission Standard
Euro 6b (NEFZ)
182 g/mi (NEFZ)
CO2 Emissions
208 g/mi (NEFZ)
Practical Convenience
Opel Astra 1.4 ECOTEC CNG
Mazda 3 SKYACTIV-G 120
5
Doors
5
5
No. of Seats
5
1160 lb
Maximum Payload
1135 lb
10.5 cu ft
Trunk Volume
10.3 cu ft









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