1972 McLaren M21 vs. 2009 Porsche 911
To start off, 2009 Porsche 911 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 3,596 cc (6 cylinders), 2009 Porsche 911 is equipped with a bigger engine. In terms of performance, 2009 Porsche 911 (316 HP @ 6800 RPM) has 33 more horse power than 1972 McLaren M21. (283 HP @ 9000 RPM) In normal driving conditions, 2009 Porsche 911 should accelerate faster than 1972 McLaren M21. With that said, vehicle weight also plays an important factor in acceleration. 2009 Porsche 911 weights approximately 830 kg more than 1972 McLaren M21. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Compare all specifications:
| 1972 McLaren M21 | 2009 Porsche 911 | |
| Make | McLaren | Porsche |
| Model | M21 | 911 |
| Year Released | 1972 | 2009 |
| Engine Size | 1927 cc | 3596 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Horse Power | 283 HP | 316 HP |
| Engine RPM | 9000 RPM | 6800 RPM |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Weight | 465 kg | 1295 kg |
