2007 Audi A4 vs. 1991 Citroen ZX
To start off, 2007 Audi A4 is newer by 16 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 3,123 cc, 2007 Audi A4 is equipped with a bigger engine. In terms of performance, 2007 Audi A4 (252 HP @ 5100 RPM) has 122 more horse power than 1991 Citroen ZX. (130 HP @ 6000 RPM). In normal driving conditions, 2007 Audi A4 should accelerate faster than 1991 Citroen ZX. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A4 weights approximately 594 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.
Let's talk about torque, 2007 Audi A4 (330 Nm @ 3250 RPM) has 170 more torque (in Nm) than 1991 Citroen ZX. (160 Nm @ 4750 RPM). This means 2007 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1991 Citroen ZX.
Compare all specifications:
| 2007 Audi A4 | 1991 Citroen ZX | |
| Make | Audi | Citroen |
| Model | A4 | ZX |
| Year Released | 2007 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 3123 cc | 1905 cc |
| Horse Power | 252 HP | 130 HP |
| Engine RPM | 5100 RPM | 6000 RPM |
| Torque | 330 Nm | 160 Nm |
| Torque RPM | 3250 RPM | 4750 RPM |
| Engine Bore Size | 84.5 mm | 83 mm |
| Engine Stroke Size | 92.8 mm | 88 mm |
| Engine Compression Ratio | 12.5:1 | 9.6:1 |
| Top Speed | 250 km/hour | 200 km/hour |
| Acceleration 0-100mph | 6.8 seconds | 9.5 seconds |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Vehicle Weight | 1698 kg | 1104 kg |
| Vehicle Length | 4580 mm | 4090 mm |
| Vehicle Width | 1400 mm | 1710 mm |
| Vehicle Height | 1780 mm | 1410 mm |
| Wheelbase Size | 2660 mm | 2550 mm |
