2004 Audi S4 vs. 1998 Alfa Romeo 155
To start off, 2004 Audi S4 is newer by 6 year(s). Which means there will be less support and parts availability for 1998 Alfa Romeo 155. In addition, the cost of maintenance, including insurance, on 1998 Alfa Romeo 155 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 221 more horse power than 1998 Alfa Romeo 155. (118 HP @ 6300 RPM). In normal driving conditions, 2004 Audi S4 should accelerate faster than 1998 Alfa Romeo 155. With that said, vehicle weight also plays an important factor in acceleration. 2004 Audi S4 weights approximately 450 kg more than 1998 Alfa Romeo 155. 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 1998 Alfa Romeo 155. 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 266 more torque (in Nm) than 1998 Alfa Romeo 155. (144 Nm @ 4500 RPM). This means 2004 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1998 Alfa Romeo 155.
Compare all specifications:
| 2004 Audi S4 | 1998 Alfa Romeo 155 | |
| Make | Audi | Alfa Romeo |
| Model | S4 | 155 |
| Year Released | 2004 | 1998 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 1598 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 339 HP | 118 HP |
| Engine RPM | 7000 RPM | 6300 RPM |
| Torque | 410 Nm | 144 Nm |
| Torque RPM | 3500 RPM | 4500 RPM |
| Engine Bore Size | 84.5 mm | 82 mm |
| Engine Stroke Size | 92.8 mm | 75.7 mm |
| Engine Compression Ratio | 11.0:1 | 10.3:1 |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1720 kg | 1270 kg |
| Vehicle Length | 4590 mm | 4450 mm |
| Vehicle Width | 1780 mm | 1710 mm |
| Vehicle Height | 1430 mm | 1450 mm |
