1991 Alfa Romeo SZ vs. 2011 BMW X5
To start off, 2011 BMW X5 is newer by 20 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 4,400 cc (8 cylinders), 2011 BMW X5 is equipped with a bigger engine. In terms of performance, 2011 BMW X5 (555 HP @ 6000 RPM) has 347 more horse power than 1991 Alfa Romeo SZ. (208 HP @ 6200 RPM) In normal driving conditions, 2011 BMW X5 should accelerate faster than 1991 Alfa Romeo SZ. With that said, vehicle weight also plays an important factor in acceleration. 2011 BMW X5 weights approximately 1175 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 2011 BMW X5 is all wheel drive (AWD), it will have significant more traction and grip than 1991 Alfa Romeo SZ. In wet, icy, snow, or gravel driving conditions, 2011 BMW X5 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, 2011 BMW X5 (677 Nm @ 1500 RPM) has 432 more torque (in Nm) than 1991 Alfa Romeo SZ. (245 Nm @ 4500 RPM). This means 2011 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 1991 Alfa Romeo SZ. 2011 BMW X5 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. 2011 BMW X5 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1991 Alfa Romeo SZ | 2011 BMW X5 | |
| Make | Alfa Romeo | BMW |
| Model | SZ | X5 |
| Year Released | 1991 | 2011 |
| Engine Position | Front | Front |
| Engine Size | 2959 cc | 4400 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 208 HP | 555 HP |
| Engine RPM | 6200 RPM | 6000 RPM |
| Torque | 245 Nm | 677 Nm |
| Torque RPM | 4500 RPM | 1500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | AWD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1260 kg | 2435 kg |
| Vehicle Length | 4670 mm | 4851 mm |
| Vehicle Width | 1740 mm | 1994 mm |
| Vehicle Height | 1320 mm | 1763 mm |
| Wheelbase Size | 2520 mm | 2934 mm |
| Fuel Tank Capacity | 50 L | 85 L |
