2005 Audi A6 vs. 1978 BMW 520
To start off, 2005 Audi A6 is newer by 27 year(s). Which means there will be less support and parts availability for 1978 BMW 520. In addition, the cost of maintenance, including insurance, on 1978 BMW 520 would be higher. At 1,951 cc (4 cylinders), 1978 BMW 520 is equipped with a bigger engine. In terms of performance, 2005 Audi A6 (148 HP @ 5700 RPM) has 13 more horse power than 1978 BMW 520. (135 HP @ 4000 RPM). In normal driving conditions, 2005 Audi A6 should accelerate faster than 1978 BMW 520. With that said, vehicle weight also plays an important factor in acceleration. 1978 BMW 520 weights approximately 75 kg more than 2005 Audi A6.
Because 2005 Audi A6 is four wheel drive (4WD), it will have significant more traction and grip than 1978 BMW 520. In wet, icy, snow, or gravel driving conditions, 2005 Audi A6 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, 1978 BMW 520 (280 Nm @ 1750 RPM) has 70 more torque (in Nm) than 2005 Audi A6. (210 Nm @ 1750 RPM). This means 1978 BMW 520 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A6.
Compare all specifications:
| 2005 Audi A6 | 1978 BMW 520 | |
| Make | Audi | BMW |
| Model | A6 | 520 |
| Year Released | 2005 | 1978 |
| Body Type | Station Wagon | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 1779 cc | 1951 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 148 HP | 135 HP |
| Engine RPM | 5700 RPM | 4000 RPM |
| Torque | 210 Nm | 280 Nm |
| Torque RPM | 1750 RPM | 1750 RPM |
| Engine Bore Size | 81 mm | 84 mm |
| Engine Stroke Size | 86.4 mm | 88 mm |
| Engine Compression Ratio | 10.0:1 | 19.0:1 |
| Top Speed | 212 km/hour | 204 km/hour |
| Acceleration 0-100mph | 10 seconds | 10.9 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1595 kg | 1670 kg |
| Vehicle Length | 4800 mm | 4810 mm |
| Vehicle Width | 1820 mm | 1810 mm |
| Vehicle Height | 1460 mm | 1450 mm |
| Wheelbase Size | 2770 mm | 2770 mm |
| Fuel Consumption Overall | 9.4 L/100km | 6.1 L/100km |
| Fuel Tank Capacity | 70 L | 70 L |
