1991 Alfa Romeo SZ vs. 2003 Alpina B3
To start off, 2003 Alpina B3 is newer by 12 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 3,344 cc (6 cylinders), 2003 Alpina B3 is equipped with a bigger engine. In terms of performance, 2003 Alpina B3 (301 HP @ 6200 RPM) has 93 more horse power than 1991 Alfa Romeo SZ. (208 HP @ 6200 RPM) In normal driving conditions, 2003 Alpina B3 should accelerate faster than 1991 Alfa Romeo SZ. With that said, vehicle weight also plays an important factor in acceleration. 2003 Alpina B3 weights approximately 385 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.
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, 2003 Alpina B3 (362 Nm @ 4800 RPM) has 117 more torque (in Nm) than 1991 Alfa Romeo SZ. (245 Nm @ 4500 RPM). This means 2003 Alpina B3 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 | 2003 Alpina B3 | |
| Make | Alfa Romeo | Alpina |
| Model | SZ | B3 |
| Year Released | 1991 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 2959 cc | 3344 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 208 HP | 301 HP |
| Engine RPM | 6200 RPM | 6200 RPM |
| Torque | 245 Nm | 362 Nm |
| Torque RPM | 4500 RPM | 4800 RPM |
| Engine Bore Size | 93 mm | 87 mm |
| Engine Stroke Size | 72.6 mm | 93.8 mm |
| Engine Compression Ratio | 10.0:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1260 kg | 1645 kg |
| Vehicle Length | 4670 mm | 4490 mm |
| Vehicle Width | 1740 mm | 1760 mm |
| Vehicle Height | 1320 mm | 1360 mm |
| Wheelbase Size | 2520 mm | 2730 mm |
| Fuel Tank Capacity | 50 L | 63 L |
