1999 GMC Sierra vs. 1972 McLaren M21
To start off, 1999 GMC Sierra is newer by 27 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 5,325 cc (8 cylinders), 1999 GMC Sierra is equipped with a bigger engine. In terms of performance, 1999 GMC Sierra (282 HP @ 5200 RPM) has 15 more horse power than 1972 McLaren M21. (267 HP @ 10000 RPM). In normal driving conditions, 1999 GMC Sierra should accelerate faster than 1972 McLaren M21. With that said, vehicle weight also plays an important factor in acceleration. 1999 GMC Sierra weights approximately 1370 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:
| 1999 GMC Sierra | 1972 McLaren M21 | |
| Make | GMC | McLaren |
| Model | Sierra | M21 |
| Year Released | 1999 | 1972 |
| Engine Size | 5325 cc | 1897 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 282 HP | 267 HP |
| Engine RPM | 5200 RPM | 10000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Weight | 1835 kg | 465 kg |
