1975 Alfa Romeo Junior vs. 2004 Audi S4
To start off, 2004 Audi S4 is newer by 29 year(s). Which means there will be less support and parts availability for 1975 Alfa Romeo Junior. In addition, the cost of maintenance, including insurance, on 1975 Alfa Romeo Junior would be higher. At 4,172 cc (8 cylinders), 2004 Audi S4 is equipped with a bigger engine. In terms of performance, 2004 Audi S4 (339 HP @ 7000 RPM) has 231 more horse power than 1975 Alfa Romeo Junior. (108 HP @ 6000 RPM) In normal driving conditions, 2004 Audi S4 should accelerate faster than 1975 Alfa Romeo Junior. With that said, vehicle weight also plays an important factor in acceleration. 2004 Audi S4 weights approximately 690 kg more than 1975 Alfa Romeo Junior. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2004 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 1975 Alfa Romeo Junior. In wet, icy, snow, or gravel driving conditions, 2004 Audi S4 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, 2004 Audi S4 (410 Nm @ 3500 RPM) has 270 more torque (in Nm) than 1975 Alfa Romeo Junior. (140 Nm @ 2800 RPM). This means 2004 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1975 Alfa Romeo Junior.
Compare all specifications:
| 1975 Alfa Romeo Junior | 2004 Audi S4 | |
| Make | Alfa Romeo | Audi |
| Model | Junior | S4 |
| Year Released | 1975 | 2004 |
| Engine Position | Front | Front |
| Engine Size | 1568 cc | 4172 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 108 HP | 339 HP |
| Engine RPM | 6000 RPM | 7000 RPM |
| Torque | 140 Nm | 410 Nm |
| Torque RPM | 2800 RPM | 3500 RPM |
| Engine Bore Size | 78 mm | 84.5 mm |
| Engine Stroke Size | 82 mm | 92.8 mm |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Vehicle Weight | 1030 kg | 1720 kg |
| Vehicle Length | 3910 mm | 4590 mm |
| Vehicle Width | 1560 mm | 1780 mm |
| Vehicle Height | 1290 mm | 1430 mm |
| Wheelbase Size | 2260 mm | 2470 mm |
