2005 Opel Astra vs. 1991 Porsche 928
To start off, 2005 Opel Astra is newer by 14 year(s). Which means there will be less support and parts availability for 1991 Porsche 928. In addition, the cost of maintenance, including insurance, on 1991 Porsche 928 would be higher. At 5,397 cc (8 cylinders), 1991 Porsche 928 is equipped with a bigger engine. In terms of performance, 1991 Porsche 928 (345 HP @ 5700 RPM) has 197 more horse power than 2005 Opel Astra. (148 HP @ 4000 RPM) In normal driving conditions, 1991 Porsche 928 should accelerate faster than 2005 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 1991 Porsche 928 weights approximately 400 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.
Because 1991 Porsche 928 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 1991 Porsche 928. However, in wet, icy, snow, or gravel driving conditions, 2005 Opel Astra, being front wheel drive (FWD), will offer much better control with better grip. 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, 1991 Porsche 928 (500 Nm @ 4250 RPM) has 180 more torque (in Nm) than 2005 Opel Astra. (320 Nm @ 2000 RPM). This means 1991 Porsche 928 will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Astra.
Compare all specifications:
| 2005 Opel Astra | 1991 Porsche 928 | |
| Make | Opel | Porsche |
| Model | Astra | 928 |
| Year Released | 2005 | 1991 |
| Body Type | Hatchback | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 5397 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 148 HP | 345 HP |
| Engine RPM | 4000 RPM | 5700 RPM |
| Torque | 320 Nm | 500 Nm |
| Torque RPM | 2000 RPM | 4250 RPM |
| Engine Bore Size | 82.1 mm | 100.1 mm |
| Engine Stroke Size | 90.4 mm | 85.9 mm |
| Engine Compression Ratio | 17.5:1 | 10.4:1 |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 3 doors | 2 doors |
| Vehicle Weight | 1200 kg | 1600 kg |
| Vehicle Length | 4300 mm | 4450 mm |
| Vehicle Width | 1800 mm | 1860 mm |
| Vehicle Height | 1440 mm | 1290 mm |
| Wheelbase Size | 2400 mm | 2510 mm |
| Fuel Tank Capacity | 52 L | 86 L |
