2009 Audi RS4 vs. 1981 Porsche 928
To start off, 2009 Audi RS4 is newer by 28 year(s). Which means there will be less support and parts availability for 1981 Porsche 928. In addition, the cost of maintenance, including insurance, on 1981 Porsche 928 would be higher. At 4,472 cc (8 cylinders), 1981 Porsche 928 is equipped with a bigger engine. In terms of performance, 2009 Audi RS4 (414 HP @ 7800 RPM) has 176 more horse power than 1981 Porsche 928. (238 HP @ 5250 RPM). In normal driving conditions, 2009 Audi RS4 should accelerate faster than 1981 Porsche 928. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi RS4 weights approximately 260 kg more than 1981 Porsche 928. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Audi RS4 is four wheel drive (4WD), it will have significant more traction and grip than 1981 Porsche 928. In wet, icy, snow, or gravel driving conditions, 2009 Audi RS4 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 RS4 (430 Nm @ 5500 RPM) has 74 more torque (in Nm) than 1981 Porsche 928. (356 Nm @ 3600 RPM). This means 2009 Audi RS4 will have an easier job in driving up hills or pulling heavy equipment than 1981 Porsche 928.
Compare all specifications:
| 2009 Audi RS4 | 1981 Porsche 928 | |
| Make | Audi | Porsche |
| Model | RS4 | 928 |
| Year Released | 2009 | 1981 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 4472 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 414 HP | 238 HP |
| Engine RPM | 7800 RPM | 5250 RPM |
| Torque | 430 Nm | 356 Nm |
| Torque RPM | 5500 RPM | 3600 RPM |
| Engine Bore Size | 84.5 mm | 95 mm |
| Engine Stroke Size | 92.8 mm | 78.9 mm |
| Engine Compression Ratio | 12.5:1 | 10.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 250 km/hour | 229 km/hour |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1710 kg | 1450 kg |
| Vehicle Length | 4590 mm | 4450 mm |
| Vehicle Width | 1820 mm | 1840 mm |
| Vehicle Height | 1420 mm | 1320 mm |
| Wheelbase Size | 2660 mm | 2510 mm |
| Fuel Tank Capacity | 70 L | 85 L |
