2006 Audi A4 vs. 1991 Citroen BX
To start off, 2006 Audi A4 is newer by 15 year(s). Which means there will be less support and parts availability for 1991 Citroen BX. In addition, the cost of maintenance, including insurance, on 1991 Citroen BX would be higher. At 2,967 cc (6 cylinders), 2006 Audi A4 is equipped with a bigger engine. In terms of performance, 2006 Audi A4 (201 HP @ 4000 RPM) has 127 more horse power than 1991 Citroen BX. (74 HP @ 5600 RPM). In normal driving conditions, 2006 Audi A4 should accelerate faster than 1991 Citroen BX. With that said, vehicle weight also plays an important factor in acceleration. 2006 Audi A4 weights approximately 375 kg more than 1991 Citroen BX. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 1991 Citroen BX. In wet, icy, snow, or gravel driving conditions, 2006 Audi A4 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 A4 (450 Nm @ 1400 RPM) has 339 more torque (in Nm) than 1991 Citroen BX. (111 Nm @ 3400 RPM). This means 2006 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1991 Citroen BX.
Compare all specifications:
| 2006 Audi A4 | 1991 Citroen BX | |
| Make | Audi | Citroen |
| Model | A4 | BX |
| Year Released | 2006 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 2967 cc | 1360 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 201 HP | 74 HP |
| Engine RPM | 4000 RPM | 5600 RPM |
| Torque | 450 Nm | 111 Nm |
| Torque RPM | 1400 RPM | 3400 RPM |
| Engine Bore Size | 83 mm | 75.1 mm |
| Engine Stroke Size | 91.4 mm | 77 mm |
| Engine Compression Ratio | 17.0:1 | 10.2:1 |
| Fuel Type | Diesel | Gasoline |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1275 kg | 900 kg |
| Vehicle Length | 4590 mm | 4240 mm |
| Vehicle Width | 1780 mm | 1680 mm |
| Vehicle Height | 1430 mm | 1370 mm |
| Wheelbase Size | 2650 mm | 2660 mm |
| Fuel Tank Capacity | 63 L | 43 L |
