1972 McLaren M21 vs. 2007 Mercedes-Benz SLK
To start off, 2007 Mercedes-Benz SLK is newer by 35 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 3,498 cc (6 cylinders), 2007 Mercedes-Benz SLK is equipped with a bigger engine. In terms of performance, 1972 McLaren M21 (283 HP @ 9000 RPM) has 14 more horse power than 2007 Mercedes-Benz SLK. (269 HP @ 6000 RPM). In normal driving conditions, 1972 McLaren M21 should accelerate faster than 2007 Mercedes-Benz SLK. With that said, vehicle weight also plays an important factor in acceleration. 2007 Mercedes-Benz SLK weights approximately 1740 kg more than 1972 McLaren M21.
Compare all specifications:
| 1972 McLaren M21 | 2007 Mercedes-Benz SLK | |
| Make | McLaren | Mercedes-Benz |
| Model | M21 | SLK |
| Year Released | 1972 | 2007 |
| Engine Size | 1927 cc | 3498 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 283 HP | 269 HP |
| Engine RPM | 9000 RPM | 6000 RPM |
| Fuel Type | Gasoline | Gasoline - Premium |
| Vehicle Weight | 465 kg | 2205 kg |
