2005 Audi S4 vs. 1989 Citroen XM
To start off, 2005 Audi S4 is newer by 16 year(s). Which means there will be less support and parts availability for 1989 Citroen XM. In addition, the cost of maintenance, including insurance, on 1989 Citroen XM would be higher. At 4,172 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2005 Audi S4 (340 HP @ 4000 RPM) has 230 more horse power than 1989 Citroen XM. (110 HP @ 4300 RPM). In normal driving conditions, 2005 Audi S4 should accelerate faster than 1989 Citroen XM. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 405 kg more than 1989 Citroen XM. 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 155 more torque (in Nm) than 1989 Citroen XM. (255 Nm). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1989 Citroen XM.
Compare all specifications:
| 2005 Audi S4 | 1989 Citroen XM | |
| Make | Audi | Citroen |
| Model | S4 | XM |
| Year Released | 2005 | 1989 |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 2088 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 340 HP | 110 HP |
| Engine RPM | 4000 RPM | 4300 RPM |
| Torque | 410 Nm | 255 Nm |
| Engine Bore Size | 85 mm | 85 mm |
| Engine Stroke Size | 93 mm | 92 mm |
| Engine Compression Ratio | 11.0:1 | 21.5:1 |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1785 kg | 1380 kg |
| Vehicle Length | 4550 mm | 4720 mm |
| Vehicle Width | 1770 mm | 1800 mm |
| Vehicle Height | 1430 mm | 1400 mm |
| Wheelbase Size | 2470 mm | 2860 mm |
| Fuel Tank Capacity | 66 L | 80 L |
