2003 Alfa Romeo GT vs. 2006 Opel Astra
To start off, 2006 Opel Astra is newer by 3 year(s). Which means there will be less support and parts availability for 2003 Alfa Romeo GT. In addition, the cost of maintenance, including insurance, on 2003 Alfa Romeo GT would be higher. At 3,172 cc (6 cylinders), 2003 Alfa Romeo GT is equipped with a bigger engine. In terms of performance, 2003 Alfa Romeo GT (237 HP @ 6200 RPM) has 138 more horse power than 2006 Opel Astra. (99 HP @ 4400 RPM). In normal driving conditions, 2003 Alfa Romeo GT should accelerate faster than 2006 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2003 Alfa Romeo GT weights approximately 17 kg more than 2006 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, 2003 Alfa Romeo GT (305 Nm @ 4800 RPM) has 65 more torque (in Nm) than 2006 Opel Astra. (240 Nm @ 2300 RPM). This means 2003 Alfa Romeo GT will have an easier job in driving up hills or pulling heavy equipment than 2006 Opel Astra.
Compare all specifications:
| 2003 Alfa Romeo GT | 2006 Opel Astra | |
| Make | Alfa Romeo | Opel |
| Model | GT | Astra |
| Year Released | 2003 | 2006 |
| Body Type | Coupe | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 3172 cc | 1686 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 237 HP | 99 HP |
| Engine RPM | 6200 RPM | 4400 RPM |
| Torque | 305 Nm | 240 Nm |
| Torque RPM | 4800 RPM | 2300 RPM |
| Engine Bore Size | 93 mm | 79 mm |
| Engine Stroke Size | 78 mm | 86 mm |
| Engine Compression Ratio | 10.0:1 | 18.4:1 |
| Top Speed | 243 km/hour | 180 km/hour |
| Acceleration 0-100mph | 6.7 seconds | 12.5 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1410 kg | 1393 kg |
| Vehicle Length | 4500 mm | 4520 mm |
| Vehicle Width | 1770 mm | 1760 mm |
| Vehicle Height | 1360 mm | 1510 mm |
| Wheelbase Size | 2550 mm | 2710 mm |
| Fuel Consumption Overall | 12.4 L/100km | 5 L/100km |
| Fuel Tank Capacity | 63 L | 52 L |
