2009 Alfa Romeo Spider vs. 1972 McLaren M21
To start off, 2009 Alfa Romeo Spider is newer by 37 year(s). Which means there will be less support and parts availability for 1972 McLaren M21. In addition, the cost of maintenance, including insurance, on 1972 McLaren M21 would be higher. At 3,195 cc (6 cylinders), 2009 Alfa Romeo Spider is equipped with a bigger engine. In terms of performance, 1972 McLaren M21 (267 HP @ 10000 RPM) has 11 more horse power than 2009 Alfa Romeo Spider. (256 HP @ 6300 RPM) In normal driving conditions, 1972 McLaren M21 should accelerate faster than 2009 Alfa Romeo Spider. With that said, vehicle weight also plays an important factor in acceleration. 2009 Alfa Romeo Spider weights approximately 1300 kg more than 1972 McLaren M21.
Compare all specifications:
| 2009 Alfa Romeo Spider | 1972 McLaren M21 | |
| Make | Alfa Romeo | McLaren |
| Model | Spider | M21 |
| Year Released | 2009 | 1972 |
| Engine Size | 3195 cc | 1897 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 256 HP | 267 HP |
| Engine RPM | 6300 RPM | 10000 RPM |
| Fuel Type | Gasoline - Premium | Gasoline |
| Vehicle Weight | 1765 kg | 465 kg |
