2007 Citroen C4 vs. 2005 Opel Astra
To start off, 2007 Citroen C4 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Opel Astra. In addition, the cost of maintenance, including insurance, on 2005 Opel Astra 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 34 more horse power than 2005 Opel Astra. (89 HP @ 5600 RPM). In normal driving conditions, 2007 Citroen C4 should accelerate faster than 2005 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2007 Citroen C4 weights approximately 430 kg more than 2005 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 45 more torque (in Nm) than 2005 Opel Astra. (125 Nm @ 4000 RPM). This means 2007 Citroen C4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Astra.
Compare all specifications:
| 2007 Citroen C4 | 2005 Opel Astra | |
| Make | Citroen | Opel |
| Model | C4 | Astra |
| Year Released | 2007 | 2005 |
| Engine Position | Front | Front |
| Engine Size | 1747 cc | 1362 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 123 HP | 89 HP |
| Engine RPM | 6000 RPM | 5600 RPM |
| Torque | 170 Nm | 125 Nm |
| Torque RPM | 3750 RPM | 4000 RPM |
| Engine Bore Size | 82.7 mm | 73.4 mm |
| Engine Stroke Size | 81.4 mm | 80.6 mm |
| Engine Compression Ratio | 11.0:1 | 10.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 185 km/hour | 178 km/hour |
| Acceleration 0-100mph | 13.4 seconds | 13.7 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 | 1155 kg |
| Vehicle Length | 4280 mm | 4260 mm |
| Vehicle Width | 1840 mm | 1760 mm |
| Vehicle Height | 1630 mm | 1470 mm |
| Wheelbase Size | 2730 mm | 2710 mm |
| Fuel Consumption Overall | 8 L/100km | 6.3 L/100km |
| Fuel Tank Capacity | 60 L | 52 L |
