2005 Audi A4 vs. 1977 BMW 520
To start off, 2005 Audi A4 is newer by 28 year(s). Which means there will be less support and parts availability for 1977 BMW 520. In addition, the cost of maintenance, including insurance, on 1977 BMW 520 would be higher. At 1,990 cc (6 cylinders), 1977 BMW 520 is equipped with a bigger engine. In terms of performance, 2005 Audi A4 (180 HP @ 5700 RPM) has 60 more horse power than 1977 BMW 520. (120 HP @ 6000 RPM). In normal driving conditions, 2005 Audi A4 should accelerate faster than 1977 BMW 520. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A4 weights approximately 165 kg more than 1977 BMW 520. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 1977 BMW 520. In wet, icy, snow, or gravel driving conditions, 2005 Audi A4 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. Let's talk about torque, 2005 Audi A4 (240 Nm @ 1950 RPM) has 80 more torque (in Nm) than 1977 BMW 520. (160 Nm @ 4000 RPM). This means 2005 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1977 BMW 520.
Compare all specifications:
| 2005 Audi A4 | 1977 BMW 520 | |
| Make | Audi | BMW |
| Model | A4 | 520 |
| Year Released | 2005 | 1977 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1781 cc | 1990 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 5 valves | 2 valves |
| Horse Power | 180 HP | 120 HP |
| Engine RPM | 5700 RPM | 6000 RPM |
| Torque | 240 Nm | 160 Nm |
| Torque RPM | 1950 RPM | 4000 RPM |
| Engine Bore Size | 81 mm | 80 mm |
| Engine Stroke Size | 86.4 mm | 66 mm |
| Engine Compression Ratio | 9.3:1 | 9.2:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 234 km/hour | 180 km/hour |
| Acceleration 0-100mph | 8.3 seconds | 12 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1475 kg | 1310 kg |
| Vehicle Length | 4550 mm | 4630 mm |
| Vehicle Width | 1770 mm | 1700 mm |
| Vehicle Height | 1430 mm | 1430 mm |
| Wheelbase Size | 2660 mm | 2640 mm |
| Fuel Tank Capacity | 66 L | 70 L |
