1952 Alfa Romeo AR 51 vs. 2009 BMW Z4
To start off, 2009 BMW Z4 is newer by 57 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 2,996 cc (6 cylinders), 2009 BMW Z4 is equipped with a bigger engine. In terms of performance, 2009 BMW Z4 (335 HP @ 7900 RPM) has 272 more horse power than 1952 Alfa Romeo AR 51. (63 HP @ 4400 RPM) In normal driving conditions, 2009 BMW Z4 should accelerate faster than 1952 Alfa Romeo AR 51. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW Z4 weights approximately 60 kg more than 1952 Alfa Romeo AR 51. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1952 Alfa Romeo AR 51 is four wheel drive (4WD), it will have significant more traction and grip than 2009 BMW Z4. In wet, icy, snow, or gravel driving conditions, 1952 Alfa Romeo AR 51 will offer significantly more control. 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. 2009 BMW Z4 has automatic transmission and 1952 Alfa Romeo AR 51 has manual transmission. 1952 Alfa Romeo AR 51 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 BMW Z4 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1952 Alfa Romeo AR 51 | 2009 BMW Z4 | |
| Make | Alfa Romeo | BMW |
| Model | AR 51 | Z4 |
| Year Released | 1952 | 2009 |
| Engine Position | Front | Front |
| Engine Size | 1884 cc | 2996 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 63 HP | 335 HP |
| Engine RPM | 4400 RPM | 7900 RPM |
| Engine Compression Ratio | 7.0:1 | 12.0:1 |
| Top Speed | 105 km/hour | 244 km/hour |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1250 kg | 1310 kg |
| Vehicle Length | 3530 mm | 4100 mm |
| Vehicle Width | 1580 mm | 1790 mm |
| Vehicle Height | 1830 mm | 1310 mm |
| Wheelbase Size | 2210 mm | 2500 mm |
| Fuel Tank Capacity | 77 L | 55 L |
