2009 Audi A4 vs. 1977 BMW 728
To start off, 2009 Audi A4 is newer by 32 year(s). Which means there will be less support and parts availability for 1977 BMW 728. In addition, the cost of maintenance, including insurance, on 1977 BMW 728 would be higher. At 2,788 cc (6 cylinders), 1977 BMW 728 is equipped with a bigger engine. In terms of performance, 1977 BMW 728 (170 HP @ 6000 RPM) has 56 more horse power than 2009 Audi A4. (114 HP @ 4000 RPM) In normal driving conditions, 1977 BMW 728 should accelerate faster than 2009 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 1977 BMW 728 weights approximately 106 kg more than 2009 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 1977 BMW 728. In wet, icy, snow, or gravel driving conditions, 2009 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, 2009 Audi A4 (285 Nm @ 1900 RPM) has 50 more torque (in Nm) than 1977 BMW 728. (235 Nm @ 3700 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1977 BMW 728.
Compare all specifications:
| 2009 Audi A4 | 1977 BMW 728 | |
| Make | Audi | BMW |
| Model | A4 | 728 |
| Year Released | 2009 | 1977 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1896 cc | 2788 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 114 HP | 170 HP |
| Engine RPM | 4000 RPM | 6000 RPM |
| Torque | 285 Nm | 235 Nm |
| Torque RPM | 1900 RPM | 3700 RPM |
| Engine Bore Size | 79.6 mm | 86 mm |
| Engine Stroke Size | 95.5 mm | 80 mm |
| Engine Compression Ratio | 19.0:1 | 9.0:1 |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1430 kg | 1536 kg |
| Vehicle Length | 4550 mm | 4870 mm |
| Vehicle Width | 1780 mm | 1810 mm |
| Vehicle Height | 1430 mm | 1440 mm |
| Wheelbase Size | 2660 mm | 2800 mm |
| Fuel Tank Capacity | 70 L | 85 L |
