1953 Alfa Romeo AR 51 vs. 2007 Audi A4
To start off, 2007 Audi A4 is newer by 54 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 1,984 cc (4 cylinders), 2007 Audi A4 is equipped with a bigger engine. In terms of performance, 2007 Audi A4 (197 HP @ 5100 RPM) has 134 more horse power than 1953 Alfa Romeo AR 51. (63 HP @ 4400 RPM) In normal driving conditions, 2007 Audi A4 should accelerate faster than 1953 Alfa Romeo AR 51. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A4 weights approximately 380 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.
Because 1953 Alfa Romeo AR 51 is four wheel drive (4WD), it will have significant more traction and grip than 2007 Audi A4. In wet, icy, snow, or gravel driving conditions, 1953 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. 2007 Audi A4 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. 2007 Audi A4 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1953 Alfa Romeo AR 51 | 2007 Audi A4 | |
| Make | Alfa Romeo | Audi |
| Model | AR 51 | A4 |
| Year Released | 1953 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 1884 cc | 1984 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 63 HP | 197 HP |
| Engine RPM | 4400 RPM | 5100 RPM |
| Engine Bore Size | 82.6 mm | 82.5 mm |
| Engine Stroke Size | 88 mm | 92.8 mm |
| Engine Compression Ratio | 7.0:1 | 10.5:1 |
| Top Speed | 105 km/hour | 238 km/hour |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1250 kg | 1630 kg |
| Vehicle Length | 3530 mm | 4580 mm |
| Vehicle Width | 1580 mm | 1400 mm |
| Vehicle Height | 1830 mm | 1780 mm |
| Wheelbase Size | 2210 mm | 2660 mm |
