1953 Alfa Romeo AR 51 vs. 2004 BMW X5
To start off, 2004 BMW X5 is newer by 51 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 4,799 cc (8 cylinders), 2004 BMW X5 is equipped with a bigger engine. In terms of performance, 2004 BMW X5 (355 HP @ 6200 RPM) has 292 more horse power than 1953 Alfa Romeo AR 51. (63 HP @ 4400 RPM) In normal driving conditions, 2004 BMW X5 should accelerate faster than 1953 Alfa Romeo AR 51. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW X5 weights approximately 1025 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.
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. 2004 BMW X5 has automatic transmission and 1953 Alfa Romeo AR 51 has manual transmission. 1953 Alfa Romeo AR 51 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2004 BMW X5 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1953 Alfa Romeo AR 51 | 2004 BMW X5 | |
| Make | Alfa Romeo | BMW |
| Model | AR 51 | X5 |
| Year Released | 1953 | 2004 |
| Engine Position | Front | Front |
| Engine Size | 1884 cc | 4799 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 63 HP | 355 HP |
| Engine RPM | 4400 RPM | 6200 RPM |
| Engine Bore Size | 82.6 mm | 93.1 mm |
| Engine Stroke Size | 88 mm | 88.3 mm |
| Drive Type | 4WD | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1250 kg | 2275 kg |
| Vehicle Length | 3530 mm | 4670 mm |
| Vehicle Width | 1580 mm | 1880 mm |
| Vehicle Height | 1830 mm | 1730 mm |
| Wheelbase Size | 2210 mm | 2940 mm |
