1991 Opel Astra vs. 1999 Opel Omega
To start off, 1999 Opel Omega is newer by 8 year(s). Which means there will be less support and parts availability for 1991 Opel Astra. In addition, the cost of maintenance, including insurance, on 1991 Opel Astra would be higher. At 2,497 cc (6 cylinders), 1999 Opel Omega is equipped with a bigger engine. In terms of performance, 1999 Opel Omega (130 HP @ 4400 RPM) has 48 more horse power than 1991 Opel Astra. (82 HP @ 4400 RPM) In normal driving conditions, 1999 Opel Omega should accelerate faster than 1991 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 1999 Opel Omega weights approximately 545 kg more than 1991 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1999 Opel Omega 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 1999 Opel Omega. However, in wet, icy, snow, or gravel driving conditions, 1991 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, 1999 Opel Omega (250 Nm @ 2200 RPM) has 82 more torque (in Nm) than 1991 Opel Astra. (168 Nm @ 2400 RPM). This means 1999 Opel Omega will have an easier job in driving up hills or pulling heavy equipment than 1991 Opel Astra.
Compare all specifications:
| 1991 Opel Astra | 1999 Opel Omega | |
| Make | Opel | Opel |
| Model | Astra | Omega |
| Year Released | 1991 | 1999 |
| Engine Position | Front | Front |
| Engine Size | 1686 cc | 2497 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 82 HP | 130 HP |
| Engine RPM | 4400 RPM | 4400 RPM |
| Torque | 168 Nm | 250 Nm |
| Torque RPM | 2400 RPM | 2200 RPM |
| Engine Compression Ratio | 22.0:1 | 22.5:1 |
| Fuel Type | Diesel | Diesel |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1130 kg | 1675 kg |
| Vehicle Length | 4060 mm | 4900 mm |
| Vehicle Width | 1690 mm | 1790 mm |
| Vehicle Height | 1430 mm | 1460 mm |
| Wheelbase Size | 2640 mm | 2740 mm |
