1975 Alfa Romeo Spider vs. 1981 Porsche 928
To start off, 1981 Porsche 928 is newer by 6 year(s). Which means there will be less support and parts availability for 1975 Alfa Romeo Spider. In addition, the cost of maintenance, including insurance, on 1975 Alfa Romeo Spider would be higher. At 4,472 cc (8 cylinders), 1981 Porsche 928 is equipped with a bigger engine. In terms of performance, 1981 Porsche 928 (238 HP @ 5250 RPM) has 149 more horse power than 1975 Alfa Romeo Spider. (89 HP @ 6000 RPM) In normal driving conditions, 1981 Porsche 928 should accelerate faster than 1975 Alfa Romeo Spider. With that said, vehicle weight also plays an important factor in acceleration. 1981 Porsche 928 weights approximately 470 kg more than 1975 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, 1981 Porsche 928 (356 Nm) has 235 more torque (in Nm) than 1975 Alfa Romeo Spider. (121 Nm). This means 1981 Porsche 928 will have an easier job in driving up hills or pulling heavy equipment than 1975 Alfa Romeo Spider.
Compare all specifications:
| 1975 Alfa Romeo Spider | 1981 Porsche 928 | |
| Make | Alfa Romeo | Porsche |
| Model | Spider | 928 |
| Year Released | 1975 | 1981 |
| Body Type | Roadster | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1287 cc | 4472 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 89 HP | 238 HP |
| Engine RPM | 6000 RPM | 5250 RPM |
| Torque | 121 Nm | 356 Nm |
| Engine Bore Size | 80 mm | 95 mm |
| Engine Stroke Size | 67.5 mm | 78.9 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 980 kg | 1450 kg |
| Vehicle Length | 4130 mm | 4450 mm |
| Vehicle Width | 1640 mm | 1840 mm |
| Vehicle Height | 1300 mm | 1320 mm |
| Wheelbase Size | 2260 mm | 2510 mm |
