1981 Alfa Romeo Spider vs. 1975 BMW 320
To start off, 1981 Alfa Romeo Spider is newer by 6 year(s). Which means there will be less support and parts availability for 1975 BMW 320. In addition, the cost of maintenance, including insurance, on 1975 BMW 320 would be higher. At 1,991 cc (6 cylinders), 1975 BMW 320 is equipped with a bigger engine. In terms of performance, 1975 BMW 320 (128 HP @ 6000 RPM) has 25 more horse power than 1981 Alfa Romeo Spider. (103 HP @ 5500 RPM) In normal driving conditions, 1975 BMW 320 should accelerate faster than 1981 Alfa Romeo Spider. With that said, vehicle weight also plays an important factor in acceleration. 1975 BMW 320 weights approximately 50 kg more than 1981 Alfa Romeo Spider. 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, 1975 BMW 320 (174 Nm @ 4000 RPM) has 29 more torque (in Nm) than 1981 Alfa Romeo Spider. (145 Nm @ 4500 RPM). This means 1975 BMW 320 will have an easier job in driving up hills or pulling heavy equipment than 1981 Alfa Romeo Spider.
Compare all specifications:
| 1981 Alfa Romeo Spider | 1975 BMW 320 | |
| Make | Alfa Romeo | BMW |
| Model | Spider | 320 |
| Year Released | 1981 | 1975 |
| Engine Position | Front | Front |
| Engine Size | 1570 cc | 1991 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 103 HP | 128 HP |
| Engine RPM | 5500 RPM | 6000 RPM |
| Torque | 145 Nm | 174 Nm |
| Torque RPM | 4500 RPM | 4000 RPM |
| Engine Bore Size | 78 mm | 80 mm |
| Engine Stroke Size | 82 mm | 66 mm |
| Engine Compression Ratio | 9.0:1 | 9.8:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1000 kg | 1050 kg |
| Vehicle Length | 4130 mm | 4330 mm |
| Vehicle Width | 1640 mm | 1650 mm |
| Vehicle Height | 1300 mm | 1390 mm |
| Wheelbase Size | 2260 mm | 2580 mm |
