2005 Audi S4 vs. 1990 Citroen BX
To start off, 2005 Audi S4 is newer by 15 year(s). Which means there will be less support and parts availability for 1990 Citroen BX. In addition, the cost of maintenance, including insurance, on 1990 Citroen BX 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 269 more horse power than 1990 Citroen BX. (71 HP @ 5600 RPM). In normal driving conditions, 2005 Audi S4 should accelerate faster than 1990 Citroen BX. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 910 kg more than 1990 Citroen BX. 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 300 more torque (in Nm) than 1990 Citroen BX. (110 Nm). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1990 Citroen BX.
Compare all specifications:
| 2005 Audi S4 | 1990 Citroen BX | |
| Make | Audi | Citroen |
| Model | S4 | BX |
| Year Released | 2005 | 1990 |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 1360 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 2 valves |
| Horse Power | 340 HP | 71 HP |
| Engine RPM | 6300 RPM | 5600 RPM |
| Torque | 410 Nm | 110 Nm |
| Engine Bore Size | 85 mm | 75 mm |
| Engine Stroke Size | 93 mm | 77 mm |
| Engine Compression Ratio | 11.0:1 | 10.2:1 |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1840 kg | 930 kg |
| Vehicle Length | 4580 mm | 4400 mm |
| Vehicle Width | 1780 mm | 1690 mm |
| Vehicle Height | 1400 mm | 1440 mm |
| Wheelbase Size | 2660 mm | 2660 mm |
| Fuel Tank Capacity | 63 L | 66 L |
