2006 Audi A8 vs. 1991 Citroen ZX
To start off, 2006 Audi A8 is newer by 15 year(s). Which means there will be less support and parts availability for 1991 Citroen ZX. In addition, the cost of maintenance, including insurance, on 1991 Citroen ZX would be higher. At 4,172 cc (8 cylinders), 2006 Audi A8 is equipped with a bigger engine. In terms of performance, 2006 Audi A8 (329 HP @ 6500 RPM) has 254 more horse power than 1991 Citroen ZX. (75 HP @ 5800 RPM). In normal driving conditions, 2006 Audi A8 should accelerate faster than 1991 Citroen ZX. With that said, vehicle weight also plays an important factor in acceleration. 2006 Audi A8 weights approximately 855 kg more than 1991 Citroen ZX. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 1991 Citroen ZX. In wet, icy, snow, or gravel driving conditions, 2006 Audi A8 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, 2006 Audi A8 (430 Nm @ 3500 RPM) has 320 more torque (in Nm) than 1991 Citroen ZX. (110 Nm @ 3400 RPM). This means 2006 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 1991 Citroen ZX.
Compare all specifications:
| 2006 Audi A8 | 1991 Citroen ZX | |
| Make | Audi | Citroen |
| Model | A8 | ZX |
| Year Released | 2006 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 1360 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 329 HP | 75 HP |
| Engine RPM | 6500 RPM | 5800 RPM |
| Torque | 430 Nm | 110 Nm |
| Torque RPM | 3500 RPM | 3400 RPM |
| Engine Bore Size | 84.6 mm | 75 mm |
| Engine Stroke Size | 93 mm | 77 mm |
| Engine Compression Ratio | 11.0:1 | 9.3:1 |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1855 kg | 1000 kg |
| Vehicle Length | 5060 mm | 4070 mm |
| Vehicle Width | 1900 mm | 1710 mm |
| Vehicle Height | 1450 mm | 1410 mm |
| Wheelbase Size | 2950 mm | 2550 mm |
| Fuel Tank Capacity | 90 L | 56 L |
