2003 Alfa Romeo Spider vs. 2005 Opel Astra
To start off, 2005 Opel Astra is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Alfa Romeo Spider. In addition, the cost of maintenance, including insurance, on 2003 Alfa Romeo Spider would be higher. At 3,179 cc (6 cylinders), 2003 Alfa Romeo Spider is equipped with a bigger engine. In terms of performance, 2003 Alfa Romeo Spider (236 HP @ 6200 RPM) has 136 more horse power than 2005 Opel Astra. (100 HP @ 4300 RPM). In normal driving conditions, 2003 Alfa Romeo Spider should accelerate faster than 2005 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2003 Alfa Romeo Spider weights approximately 125 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, 2003 Alfa Romeo Spider (289 Nm @ 4800 RPM) has 59 more torque (in Nm) than 2005 Opel Astra. (230 Nm @ 1950 RPM). This means 2003 Alfa Romeo Spider will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Astra.
Compare all specifications:
| 2003 Alfa Romeo Spider | 2005 Opel Astra | |
| Make | Alfa Romeo | Opel |
| Model | Spider | Astra |
| Year Released | 2003 | 2005 |
| Body Type | Roadster | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 3179 cc | 1908 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 236 HP | 100 HP |
| Engine RPM | 6200 RPM | 4300 RPM |
| Torque | 289 Nm | 230 Nm |
| Torque RPM | 4800 RPM | 1950 RPM |
| Engine Bore Size | 93.1 mm | 84 mm |
| Engine Stroke Size | 78 mm | 90 mm |
| Engine Compression Ratio | 10.5:1 | 18.5:1 |
| Acceleration 0-100mph | 6.3 seconds | 12 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 3 doors |
| Vehicle Weight | 1470 kg | 1345 kg |
| Vehicle Length | 4310 mm | 4120 mm |
| Vehicle Width | 1790 mm | 1720 mm |
| Vehicle Height | 1320 mm | 1430 mm |
| Wheelbase Size | 2710 mm | 2610 mm |
| Fuel Tank Capacity | 70 L | 52 L |
