2009 Citroen C4 vs. 2007 Opel Astra
To start off, 2009 Citroen C4 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Opel Astra. In addition, the cost of maintenance, including insurance, on 2007 Opel Astra would be higher. At 1,995 cc (4 cylinders), 2009 Citroen C4 is equipped with a bigger engine. In terms of performance, 2009 Citroen C4 (134 HP @ 4000 RPM) has 44 more horse power than 2007 Opel Astra. (90 HP @ 4000 RPM). In normal driving conditions, 2009 Citroen C4 should accelerate faster than 2007 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2009 Citroen C4 weights approximately 126 kg more than 2007 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, 2009 Citroen C4 (320 Nm @ 2000 RPM) has 120 more torque (in Nm) than 2007 Opel Astra. (200 Nm @ 1750 RPM). This means 2009 Citroen C4 will have an easier job in driving up hills or pulling heavy equipment than 2007 Opel Astra. 2007 Opel Astra has automatic transmission and 2009 Citroen C4 has manual transmission. 2009 Citroen C4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Opel Astra will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Citroen C4 | 2007 Opel Astra | |
| Make | Citroen | Opel |
| Model | C4 | Astra |
| Year Released | 2009 | 2007 |
| Body Type | Hatchback | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 1248 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 134 HP | 90 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Torque | 320 Nm | 200 Nm |
| Torque RPM | 2000 RPM | 1750 RPM |
| Engine Bore Size | 85 mm | 69.6 mm |
| Engine Stroke Size | 88 mm | 82 mm |
| Engine Compression Ratio | 18.0:1 | 18.0:1 |
| Fuel Type | Diesel | Diesel |
| Top Speed | 207 km/hour | 174 km/hour |
| Acceleration 0-100mph | 10.5 seconds | 13.6 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 3 doors |
| Vehicle Weight | 1456 kg | 1330 kg |
| Vehicle Length | 4270 mm | 4300 mm |
| Vehicle Width | 1780 mm | 1760 mm |
| Vehicle Height | 1460 mm | 1440 mm |
| Wheelbase Size | 2610 mm | 2620 mm |
| Fuel Consumption Overall | 5.4 L/100km | 4.8 L/100km |
| Fuel Tank Capacity | 60 L | 52 L |
