1972 McLaren M21 vs. 1957 Morris Isis
To start off, 1972 McLaren M21 is newer by 15 year(s). Which means there will be less support and parts availability for 1957 Morris Isis. In addition, the cost of maintenance, including insurance, on 1957 Morris Isis would be higher. At 2,639 cc (6 cylinders), 1957 Morris Isis is equipped with a bigger engine. In terms of performance, 1972 McLaren M21 (283 HP @ 9000 RPM) has 198 more horse power than 1957 Morris Isis. (85 HP @ 4250 RPM). In normal driving conditions, 1972 McLaren M21 should accelerate faster than 1957 Morris Isis. With that said, vehicle weight also plays an important factor in acceleration. 1957 Morris Isis weights approximately 850 kg more than 1972 McLaren M21.
Compare all specifications:
| 1972 McLaren M21 | 1957 Morris Isis | |
| Make | McLaren | Morris |
| Model | M21 | Isis |
| Year Released | 1972 | 1957 |
| Engine Size | 1927 cc | 2639 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 283 HP | 85 HP |
| Engine RPM | 9000 RPM | 4250 RPM |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Weight | 465 kg | 1315 kg |
