1972 McLaren M21 vs. 1985 Porsche 911
To start off, 1985 Porsche 911 is newer by 13 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 3,164 cc (6 cylinders), 1985 Porsche 911 is equipped with a bigger engine. In terms of performance, 1972 McLaren M21 (267 HP @ 10000 RPM) has 39 more horse power than 1985 Porsche 911. (228 HP @ 5900 RPM). In normal driving conditions, 1972 McLaren M21 should accelerate faster than 1985 Porsche 911. With that said, vehicle weight also plays an important factor in acceleration. 1985 Porsche 911 weights approximately 745 kg more than 1972 McLaren M21.
Compare all specifications:
| 1972 McLaren M21 | 1985 Porsche 911 | |
| Make | McLaren | Porsche |
| Model | M21 | 911 |
| Year Released | 1972 | 1985 |
| Engine Size | 1897 cc | 3164 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Horse Power | 267 HP | 228 HP |
| Engine RPM | 10000 RPM | 5900 RPM |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Weight | 465 kg | 1210 kg |
