2009 Audi A4 vs. 1981 Citroen CX
To start off, 2009 Audi A4 is newer by 28 year(s). Which means there will be less support and parts availability for 1981 Citroen CX. In addition, the cost of maintenance, including insurance, on 1981 Citroen CX would be higher. At 2,965 cc (6 cylinders), 2009 Audi A4 is equipped with a bigger engine. In terms of performance, 2009 Audi A4 (237 HP @ 4000 RPM) has 132 more horse power than 1981 Citroen CX. (105 HP @ 5500 RPM). In normal driving conditions, 2009 Audi A4 should accelerate faster than 1981 Citroen CX. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A4 weights approximately 470 kg more than 1981 Citroen CX. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 1981 Citroen CX. In wet, icy, snow, or gravel driving conditions, 2009 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, 2009 Audi A4 (500 Nm @ 1500 RPM) has 348 more torque (in Nm) than 1981 Citroen CX. (152 Nm @ 3250 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1981 Citroen CX.
Compare all specifications:
| 2009 Audi A4 | 1981 Citroen CX | |
| Make | Audi | Citroen |
| Model | A4 | CX |
| Year Released | 2009 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 2965 cc | 1995 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 237 HP | 105 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 500 Nm | 152 Nm |
| Torque RPM | 1500 RPM | 3250 RPM |
| Engine Bore Size | 83 mm | 86 mm |
| Engine Stroke Size | 91.4 mm | 85.5 mm |
| Engine Compression Ratio | 16.8:1 | 9.0:1 |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 250 km/hour | 175 km/hour |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1695 kg | 1225 kg |
| Vehicle Length | 4710 mm | 4670 mm |
| Vehicle Width | 1830 mm | 1770 mm |
| Vehicle Height | 1440 mm | 1370 mm |
| Wheelbase Size | 2810 mm | 2750 mm |
| Fuel Consumption Overall | 7.1 L/100km | 5.2 L/100km |
| Fuel Tank Capacity | 64 L | 80 L |
