1981 Audi UR vs. 1972 McLaren M21
To start off, 1981 Audi UR is newer by 9 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 2,144 cc (5 cylinders), 1981 Audi UR is equipped with a bigger engine. In terms of performance, 1972 McLaren M21 (267 HP @ 10000 RPM) has 70 more horse power than 1981 Audi UR. (197 HP @ 5500 RPM) In normal driving conditions, 1972 McLaren M21 should accelerate faster than 1981 Audi UR. With that said, vehicle weight also plays an important factor in acceleration. 1981 Audi UR weights approximately 785 kg more than 1972 McLaren M21.
Compare all specifications:
| 1981 Audi UR | 1972 McLaren M21 | |
| Make | Audi | McLaren |
| Model | UR | M21 |
| Year Released | 1981 | 1972 |
| Engine Size | 2144 cc | 1897 cc |
| Engine Cylinders | 5 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 197 HP | 267 HP |
| Engine RPM | 5500 RPM | 10000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Weight | 1250 kg | 465 kg |
