2007 Citroen C4 vs. 2009 Opel Astra
To start off, 2009 Opel Astra is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Citroen C4. In addition, the cost of maintenance, including insurance, on 2007 Citroen C4 would be higher. At 1,747 cc (4 cylinders), 2007 Citroen C4 is equipped with a bigger engine. In terms of performance, 2007 Citroen C4 (123 HP @ 6000 RPM) has 19 more horse power than 2009 Opel Astra. (104 HP @ 6000 RPM). In normal driving conditions, 2007 Citroen C4 should accelerate faster than 2009 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2007 Citroen C4 weights approximately 355 kg more than 2009 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2007 Citroen C4 (170 Nm @ 3750 RPM) has 20 more torque (in Nm) than 2009 Opel Astra. (150 Nm @ 3900 RPM). This means 2007 Citroen C4 will have an easier job in driving up hills or pulling heavy equipment than 2009 Opel Astra.
Compare all specifications:
| 2007 Citroen C4 | 2009 Opel Astra | |
| Make | Citroen | Opel |
| Model | C4 | Astra |
| Year Released | 2007 | 2009 |
| Engine Position | Front | Front |
| Engine Size | 1747 cc | 1589 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 123 HP | 104 HP |
| Engine RPM | 6000 RPM | 6000 RPM |
| Torque | 170 Nm | 150 Nm |
| Torque RPM | 3750 RPM | 3900 RPM |
| Engine Bore Size | 82.7 mm | 79.1 mm |
| Engine Stroke Size | 81.4 mm | 81.5 mm |
| Engine Compression Ratio | 11.0:1 | 10.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Acceleration 0-100mph | 13.4 seconds | 12.3 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1585 kg | 1230 kg |
| Vehicle Length | 4280 mm | 4260 mm |
| Vehicle Width | 1840 mm | 1760 mm |
| Vehicle Height | 1630 mm | 1470 mm |
| Wheelbase Size | 2730 mm | 2620 mm |
| Fuel Consumption Overall | 8 L/100km | 6.6 L/100km |
| Fuel Tank Capacity | 60 L | 52 L |
