1991 Alfa Romeo SZ vs. 1990 Porsche 911
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 Porsche 911. In addition, the cost of maintenance, including insurance, on 1990 Porsche 911 would be higher. At 3,164 cc (6 cylinders), 1990 Porsche 911 is equipped with a bigger engine. In terms of performance, 1990 Porsche 911 (228 HP @ 5900 RPM) has 20 more horse power than 1991 Alfa Romeo SZ. (208 HP @ 6200 RPM) In normal driving conditions, 1990 Porsche 911 should accelerate faster than 1991 Alfa Romeo SZ. With that said, vehicle weight also plays an important factor in acceleration. 1991 Alfa Romeo SZ weights approximately 24 kg more than 1990 Porsche 911.
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 Porsche 911 (286 Nm @ 4800 RPM) has 41 more torque (in Nm) than 1991 Alfa Romeo SZ. (245 Nm @ 4500 RPM). This means 1990 Porsche 911 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 Porsche 911 | |
| Make | Alfa Romeo | Porsche |
| Model | SZ | 911 |
| Year Released | 1991 | 1990 |
| Engine Position | Front | Rear |
| Engine Size | 2959 cc | 3164 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 208 HP | 228 HP |
| Engine RPM | 6200 RPM | 5900 RPM |
| Torque | 245 Nm | 286 Nm |
| Torque RPM | 4500 RPM | 4800 RPM |
| Engine Bore Size | 93 mm | 95 mm |
| Engine Stroke Size | 72.6 mm | 74.4 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1260 kg | 1236 kg |
| Vehicle Length | 4670 mm | 4300 mm |
| Vehicle Width | 1740 mm | 1660 mm |
| Vehicle Height | 1320 mm | 1330 mm |
| Wheelbase Size | 2520 mm | 2280 mm |
| Fuel Tank Capacity | 50 L | 80 L |
