1952 Alfa Romeo AR 51 vs. 1981 Monteverdi Sierra
To start off, 1981 Monteverdi Sierra is newer by 29 year(s). Which means there will be less support and parts availability for 1952 Alfa Romeo AR 51. In addition, the cost of maintenance, including insurance, on 1952 Alfa Romeo AR 51 would be higher. At 5,898 cc (8 cylinders), 1981 Monteverdi Sierra is equipped with a bigger engine. In terms of performance, 1981 Monteverdi Sierra (187 HP @ 4000 RPM) has 124 more horse power than 1952 Alfa Romeo AR 51. (63 HP @ 4400 RPM) In normal driving conditions, 1981 Monteverdi Sierra should accelerate faster than 1952 Alfa Romeo AR 51.
Compare all specifications:
| 1952 Alfa Romeo AR 51 | 1981 Monteverdi Sierra | |
| Make | Alfa Romeo | Monteverdi |
| Model | AR 51 | Sierra |
| Year Released | 1952 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 1884 cc | 5898 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 63 HP | 187 HP |
| Engine RPM | 4400 RPM | 4000 RPM |
| Vehicle Length | 3530 mm | 4690 mm |
| Wheelbase Size | 2210 mm | 2750 mm |
