1991 Alfa Romeo SZ vs. 1990 Opel Omega
To start off, 1991 Alfa Romeo SZ is newer by 1 year(s). Which means there will be less support and parts availability for 1990 Opel Omega. In addition, the cost of maintenance, including insurance, on 1990 Opel Omega would be higher. At 2,967 cc (6 cylinders), 1990 Opel Omega is equipped with a bigger engine. In terms of performance, 1991 Alfa Romeo SZ (208 HP @ 6200 RPM) has 4 more horse power than 1990 Opel Omega. (204 HP @ 6000 RPM). In normal driving conditions, 1991 Alfa Romeo SZ should accelerate faster than 1990 Opel Omega. With that said, vehicle weight also plays an important factor in acceleration. 1990 Opel Omega weights approximately 173 kg more than 1991 Alfa Romeo SZ.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front 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, 1990 Opel Omega (270 Nm @ 3000 RPM) has 25 more torque (in Nm) than 1991 Alfa Romeo SZ. (245 Nm @ 4500 RPM). This means 1990 Opel Omega will have an easier job in driving up hills or pulling heavy equipment than 1991 Alfa Romeo SZ.
Compare all specifications:
| 1991 Alfa Romeo SZ | 1990 Opel Omega | |
| Make | Alfa Romeo | Opel |
| Model | SZ | Omega |
| Year Released | 1991 | 1990 |
| Engine Position | Front | Front |
| Engine Size | 2959 cc | 2967 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 208 HP | 204 HP |
| Engine RPM | 6200 RPM | 6000 RPM |
| Torque | 245 Nm | 270 Nm |
| Torque RPM | 4500 RPM | 3000 RPM |
| Engine Bore Size | 93 mm | 95 mm |
| Engine Stroke Size | 72.6 mm | 69.8 mm |
| Engine Compression Ratio | 10.0:1 | 10.0:1 |
| Top Speed | 233 km/hour | 235 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1260 kg | 1433 kg |
| Vehicle Length | 4670 mm | 4690 mm |
| Vehicle Width | 1740 mm | 1780 mm |
| Vehicle Height | 1320 mm | 1460 mm |
| Wheelbase Size | 2520 mm | 2740 mm |
