1991 Alfa Romeo SZ vs. 2007 Porsche 911
To start off, 2007 Porsche 911 is newer by 16 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 3,600 cc (6 cylinders), 2007 Porsche 911 is equipped with a bigger engine. In terms of performance, 2007 Porsche 911 (473 HP @ 6000 RPM) has 265 more horse power than 1991 Alfa Romeo SZ. (208 HP @ 6200 RPM) In normal driving conditions, 2007 Porsche 911 should accelerate faster than 1991 Alfa Romeo SZ. With that said, vehicle weight also plays an important factor in acceleration. 2007 Porsche 911 weights approximately 330 kg more than 1991 Alfa Romeo SZ. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Porsche 911 is four wheel drive (4WD), it will have significant more traction and grip than 1991 Alfa Romeo SZ. In wet, icy, snow, or gravel driving conditions, 2007 Porsche 911 will offer significantly more control. 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, 2007 Porsche 911 (620 Nm @ 1950 RPM) has 375 more torque (in Nm) than 1991 Alfa Romeo SZ. (245 Nm @ 4500 RPM). This means 2007 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 1991 Alfa Romeo SZ. 2007 Porsche 911 has automatic transmission and 1991 Alfa Romeo SZ has manual transmission. 1991 Alfa Romeo SZ will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Porsche 911 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1991 Alfa Romeo SZ | 2007 Porsche 911 | |
| Make | Alfa Romeo | Porsche |
| Model | SZ | 911 |
| Year Released | 1991 | 2007 |
| Engine Position | Front | Rear |
| Engine Size | 2959 cc | 3600 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 208 HP | 473 HP |
| Engine RPM | 6200 RPM | 6000 RPM |
| Torque | 245 Nm | 620 Nm |
| Torque RPM | 4500 RPM | 1950 RPM |
| Engine Compression Ratio | 10.0:1 | 10.1:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 233 km/hour | 310 km/hour |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1260 kg | 1590 kg |
| Vehicle Length | 4670 mm | 4440 mm |
| Vehicle Width | 1740 mm | 1860 mm |
| Vehicle Height | 1320 mm | 1310 mm |
| Wheelbase Size | 2520 mm | 2360 mm |
| Fuel Tank Capacity | 50 L | 80 L |
