1954 Alfa Romeo AR 51 vs. 2005 Porsche 911
To start off, 2005 Porsche 911 is newer by 51 year(s). Which means there will be less support and parts availability for 1954 Alfa Romeo AR 51. In addition, the cost of maintenance, including insurance, on 1954 Alfa Romeo AR 51 would be higher. At 3,594 cc (6 cylinders), 2005 Porsche 911 is equipped with a bigger engine. In terms of performance, 2005 Porsche 911 (320 HP @ 6800 RPM) has 257 more horse power than 1954 Alfa Romeo AR 51. (63 HP @ 4400 RPM) In normal driving conditions, 2005 Porsche 911 should accelerate faster than 1954 Alfa Romeo AR 51. With that said, vehicle weight also plays an important factor in acceleration. 2005 Porsche 911 weights approximately 200 kg more than 1954 Alfa Romeo AR 51. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control.
Compare all specifications:
| 1954 Alfa Romeo AR 51 | 2005 Porsche 911 | |
| Make | Alfa Romeo | Porsche |
| Model | AR 51 | 911 |
| Year Released | 1954 | 2005 |
| Engine Position | Front | Rear |
| Engine Size | 1884 cc | 3594 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 63 HP | 320 HP |
| Engine RPM | 4400 RPM | 6800 RPM |
| Engine Bore Size | 82.6 mm | 96 mm |
| Engine Stroke Size | 88 mm | 82.8 mm |
| Engine Compression Ratio | 7.0:1 | 11.3:1 |
| Top Speed | 105 km/hour | 280 km/hour |
| Drive Type | 4WD | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1250 kg | 1450 kg |
| Vehicle Length | 3530 mm | 4430 mm |
| Vehicle Width | 1580 mm | 1860 mm |
| Vehicle Height | 1830 mm | 1320 mm |
| Wheelbase Size | 2210 mm | 2360 mm |
