1973 AC 428 vs. 2004 Audi RS4
To start off, 2004 Audi RS4 is newer by 31 year(s). Which means there will be less support and parts availability for 1973 AC 428. In addition, the cost of maintenance, including insurance, on 1973 AC 428 would be higher. At 7,002 cc (8 cylinders), 1973 AC 428 is equipped with a bigger engine. In terms of performance, 2004 Audi RS4 (376 HP @ 6300 RPM) has 78 more horse power than 1973 AC 428. (298 HP @ 4600 RPM) In normal driving conditions, 2004 Audi RS4 should accelerate faster than 1973 AC 428. With that said, vehicle weight also plays an important factor in acceleration. 2004 Audi RS4 weights approximately 155 kg more than 1973 AC 428. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2004 Audi RS4 is four wheel drive (4WD), it will have significant more traction and grip than 1973 AC 428. In wet, icy, snow, or gravel driving conditions, 2004 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, 1973 AC 428 (639 Nm @ 2800 RPM) has 189 more torque (in Nm) than 2004 Audi RS4. (450 Nm @ 2500 RPM). This means 1973 AC 428 will have an easier job in driving up hills or pulling heavy equipment than 2004 Audi RS4.
Compare all specifications:
| 1973 AC 428 | 2004 Audi RS4 | |
| Make | AC | Audi |
| Model | 428 | RS4 |
| Year Released | 1973 | 2004 |
| Engine Position | Front | Front |
| Engine Size | 7002 cc | 2671 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 298 HP | 376 HP |
| Engine RPM | 4600 RPM | 6300 RPM |
| Torque | 639 Nm | 450 Nm |
| Torque RPM | 2800 RPM | 2500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1430 kg | 1585 kg |
| Vehicle Length | 4430 mm | 4480 mm |
| Vehicle Width | 1710 mm | 1740 mm |
| Vehicle Height | 1310 mm | 1450 mm |
| Wheelbase Size | 2450 mm | 2610 mm |
