1991 Alfa Romeo SZ vs. 2006 Opel Speedster
To start off, 2006 Opel Speedster is newer by 15 year(s). Which means there will be less support and parts availability for 1991 Alfa Romeo SZ. In addition, the cost of maintenance, including insurance, on 1991 Alfa Romeo SZ would be higher. At 2,959 cc (6 cylinders), 1991 Alfa Romeo SZ is equipped with a bigger engine. In terms of performance, 1991 Alfa Romeo SZ (208 HP @ 6200 RPM) has 11 more horse power than 2006 Opel Speedster. (197 HP @ 5500 RPM). In normal driving conditions, 1991 Alfa Romeo SZ should accelerate faster than 2006 Opel Speedster. With that said, vehicle weight also plays an important factor in acceleration. 1991 Alfa Romeo SZ weights approximately 255 kg more than 2006 Opel Speedster. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2006 Opel Speedster (250 Nm @ 1950 RPM) has 5 more torque (in Nm) than 1991 Alfa Romeo SZ. (245 Nm @ 4500 RPM). This means 2006 Opel Speedster 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 | 2006 Opel Speedster | |
| Make | Alfa Romeo | Opel |
| Model | SZ | Speedster |
| Year Released | 1991 | 2006 |
| Engine Position | Front | Middle |
| Engine Size | 2959 cc | 1998 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 208 HP | 197 HP |
| Engine RPM | 6200 RPM | 5500 RPM |
| Torque | 245 Nm | 250 Nm |
| Torque RPM | 4500 RPM | 1950 RPM |
| Engine Bore Size | 93 mm | 86.1 mm |
| Engine Stroke Size | 72.6 mm | 86 mm |
| Engine Compression Ratio | 10.0:1 | 8.8:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1260 kg | 1005 kg |
| Vehicle Length | 4670 mm | 3790 mm |
| Vehicle Width | 1740 mm | 1710 mm |
| Vehicle Height | 1320 mm | 1120 mm |
| Wheelbase Size | 2520 mm | 2340 mm |
| Fuel Tank Capacity | 50 L | 36 L |
