2005 GMC Sierra vs. 1972 McLaren M21
To start off, 2005 GMC Sierra 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 5,964 cc (8 cylinders), 2005 GMC Sierra is equipped with a bigger engine. In terms of performance, 2005 GMC Sierra (340 HP @ 5200 RPM) has 57 more horse power than 1972 McLaren M21. (283 HP @ 9000 RPM). In normal driving conditions, 2005 GMC Sierra should accelerate faster than 1972 McLaren M21. With that said, vehicle weight also plays an important factor in acceleration. 2005 GMC Sierra weights approximately 1880 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:
| 2005 GMC Sierra | 1972 McLaren M21 | |
| Make | GMC | McLaren |
| Model | Sierra | M21 |
| Year Released | 2005 | 1972 |
| Engine Size | 5964 cc | 1927 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 340 HP | 283 HP |
| Engine RPM | 5200 RPM | 9000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Weight | 2345 kg | 465 kg |
