1998 Alfa Romeo 166 vs. 2005 Audi S4
To start off, 2005 Audi S4 is newer by 7 year(s). Which means there will be less support and parts availability for 1998 Alfa Romeo 166. In addition, the cost of maintenance, including insurance, on 1998 Alfa Romeo 166 would be higher. At 4,161 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2005 Audi S4 (340 HP @ 6300 RPM) has 185 more horse power than 1998 Alfa Romeo 166. (155 HP @ 6400 RPM) In normal driving conditions, 2005 Audi S4 should accelerate faster than 1998 Alfa Romeo 166. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 345 kg more than 1998 Alfa Romeo 166. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2005 Audi S4 (410 Nm) has 223 more torque (in Nm) than 1998 Alfa Romeo 166. (187 Nm). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1998 Alfa Romeo 166.
Compare all specifications:
| 1998 Alfa Romeo 166 | 2005 Audi S4 | |
| Make | Alfa Romeo | Audi |
| Model | 166 | S4 |
| Year Released | 1998 | 2005 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1970 cc | 4161 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 155 HP | 340 HP |
| Engine RPM | 6400 RPM | 6300 RPM |
| Torque | 187 Nm | 410 Nm |
| Engine Bore Size | 83.1 mm | 85 mm |
| Engine Stroke Size | 91 mm | 93 mm |
| Engine Compression Ratio | 10.0:1 | 11.0:1 |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1495 kg | 1840 kg |
| Vehicle Length | 4730 mm | 4580 mm |
| Vehicle Width | 1820 mm | 1780 mm |
| Vehicle Height | 1420 mm | 1400 mm |
| Wheelbase Size | 2710 mm | 2660 mm |
| Fuel Tank Capacity | 72 L | 63 L |
