2009 Audi A4 vs. 1978 Citroen CX
To start off, 2009 Audi A4 is newer by 31 year(s). Which means there will be less support and parts availability for 1978 Citroen CX. In addition, the cost of maintenance, including insurance, on 1978 Citroen CX would be higher. At 1,905 cc (4 cylinders), 1978 Citroen CX is equipped with a bigger engine. In terms of performance, 2009 Audi A4 (187 HP @ 5700 RPM) has 86 more horse power than 1978 Citroen CX. (101 HP @ 5600 RPM). In normal driving conditions, 2009 Audi A4 should accelerate faster than 1978 Citroen CX. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A4 weights approximately 210 kg more than 1978 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 1978 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 (240 Nm @ 1950 RPM) has 79 more torque (in Nm) than 1978 Citroen CX. (161 Nm @ 3000 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1978 Citroen CX.
Compare all specifications:
| 2009 Audi A4 | 1978 Citroen CX | |
| Make | Audi | Citroen |
| Model | A4 | CX |
| Year Released | 2009 | 1978 |
| Engine Position | Front | Front |
| Engine Size | 1781 cc | 1905 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 5 valves | 2 valves |
| Horse Power | 187 HP | 101 HP |
| Engine RPM | 5700 RPM | 5600 RPM |
| Torque | 240 Nm | 161 Nm |
| Torque RPM | 1950 RPM | 3000 RPM |
| Engine Bore Size | 81 mm | 83 mm |
| Engine Stroke Size | 86.4 mm | 88 mm |
| Engine Compression Ratio | 9.3:1 | 9.3:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1475 kg | 1265 kg |
| Vehicle Length | 4550 mm | 4670 mm |
| Vehicle Width | 1780 mm | 1770 mm |
| Vehicle Height | 1430 mm | 1370 mm |
| Wheelbase Size | 2660 mm | 2850 mm |
| Fuel Tank Capacity | 66 L | 68 L |
