1953 Alfa Romeo AR 51 vs. 1968 Alfa Romeo Spider
To start off, 1968 Alfa Romeo Spider is newer by 15 year(s). Which means there will be less support and parts availability for 1953 Alfa Romeo AR 51. In addition, the cost of maintenance, including insurance, on 1953 Alfa Romeo AR 51 would be higher. At 2,580 cc (6 cylinders), 1968 Alfa Romeo Spider is equipped with a bigger engine. In terms of performance, 1968 Alfa Romeo Spider (163 HP @ 5900 RPM) has 100 more horse power than 1953 Alfa Romeo AR 51. (63 HP @ 4400 RPM) In normal driving conditions, 1968 Alfa Romeo Spider should accelerate faster than 1953 Alfa Romeo AR 51. With that said, vehicle weight also plays an important factor in acceleration. 1968 Alfa Romeo Spider weights approximately 80 kg more than 1953 Alfa Romeo AR 51. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Compare all specifications:
| 1953 Alfa Romeo AR 51 | 1968 Alfa Romeo Spider | |
| Make | Alfa Romeo | Alfa Romeo |
| Model | AR 51 | Spider |
| Year Released | 1953 | 1968 |
| Engine Position | Front | Front |
| Engine Size | 1884 cc | 2580 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 63 HP | 163 HP |
| Engine RPM | 4400 RPM | 5900 RPM |
| Engine Bore Size | 82.6 mm | 83 mm |
| Engine Stroke Size | 88 mm | 79.6 mm |
| Engine Compression Ratio | 7.0:1 | 9.0:1 |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1250 kg | 1330 kg |
| Vehicle Length | 3530 mm | 4510 mm |
| Vehicle Width | 1580 mm | 1610 mm |
| Vehicle Height | 1830 mm | 1390 mm |
| Wheelbase Size | 2210 mm | 2510 mm |
