2009 Audi S4 vs. 1998 Alfa Romeo 155
To start off, 2009 Audi S4 is newer by 11 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 4,161 cc (8 cylinders), 2009 Audi S4 is equipped with a bigger engine. In terms of performance, 1998 Alfa Romeo 155 (493 HP @ 11700 RPM) has 153 more horse power than 2009 Audi S4. (340 HP @ 6800 RPM) In normal driving conditions, 1998 Alfa Romeo 155 should accelerate faster than 2009 Audi S4. With that said, vehicle weight also plays an important factor in acceleration. 1998 Alfa Romeo 155 weights approximately 110 kg more than 2009 Audi S4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2009 Audi S4 (410 Nm @ 3500 RPM) has 110 more torque (in Nm) than 1998 Alfa Romeo 155. (300 Nm @ 9500 RPM). This means 2009 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1998 Alfa Romeo 155.
Compare all specifications:
| 2009 Audi S4 | 1998 Alfa Romeo 155 | |
| Make | Audi | Alfa Romeo |
| Model | S4 | 155 |
| Year Released | 2009 | 1998 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 2499 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 340 HP | 493 HP |
| Engine RPM | 6800 RPM | 11700 RPM |
| Torque | 410 Nm | 300 Nm |
| Torque RPM | 3500 RPM | 9500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 930 kg | 1040 kg |
| Vehicle Width | 1780 mm | 1750 mm |
