1972 McLaren M21 vs. 2005 Mercedes-Benz SLK
To start off, 2005 Mercedes-Benz SLK is newer by 33 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 3,491 cc (6 cylinders), 2005 Mercedes-Benz SLK is equipped with a bigger engine. In terms of performance, 2005 Mercedes-Benz SLK (269 HP @ 4200 RPM) has 2 more horse power than 1972 McLaren M21. (267 HP @ 10000 RPM) In normal driving conditions, 2005 Mercedes-Benz SLK should accelerate faster than 1972 McLaren M21. With that said, vehicle weight also plays an important factor in acceleration. 2005 Mercedes-Benz SLK weights approximately 940 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 | 2005 Mercedes-Benz SLK | |
| Make | McLaren | Mercedes-Benz |
| Model | M21 | SLK |
| Year Released | 1972 | 2005 |
| Engine Size | 1897 cc | 3491 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 267 HP | 269 HP |
| Engine RPM | 10000 RPM | 4200 RPM |
| Vehicle Weight | 465 kg | 1405 kg |
