2009 Cadillac XLR vs. 1972 McLaren M21
To start off, 2009 Cadillac XLR 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 4,369 cc (8 cylinders), 2009 Cadillac XLR is equipped with a bigger engine. In terms of performance, 2009 Cadillac XLR (444 HP @ 6400 RPM) has 177 more horse power than 1972 McLaren M21. (267 HP @ 10000 RPM). In normal driving conditions, 2009 Cadillac XLR should accelerate faster than 1972 McLaren M21. With that said, vehicle weight also plays an important factor in acceleration. 2009 Cadillac XLR weights approximately 1256 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:
| 2009 Cadillac XLR | 1972 McLaren M21 | |
| Make | Cadillac | McLaren |
| Model | XLR | M21 |
| Year Released | 2009 | 1972 |
| Engine Size | 4369 cc | 1897 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 444 HP | 267 HP |
| Engine RPM | 6400 RPM | 10000 RPM |
| Fuel Type | Gasoline - Premium | Gasoline |
| Vehicle Weight | 1721 kg | 465 kg |
