2009 Audi S4 vs. 1981 Citroen CX
To start off, 2009 Audi S4 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 4,163 cc (8 cylinders), 2009 Audi S4 is equipped with a bigger engine. In terms of performance, 2009 Audi S4 (340 HP @ 7000 RPM) has 235 more horse power than 1981 Citroen CX. (105 HP @ 5500 RPM). In normal driving conditions, 2009 Audi S4 should accelerate faster than 1981 Citroen CX. With that said, vehicle weight also plays an important factor in acceleration. 1981 Citroen CX weights approximately 295 kg more than 2009 Audi S4.
Because 2009 Audi S4 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 S4 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 S4 (410 Nm @ 3500 RPM) has 258 more torque (in Nm) than 1981 Citroen CX. (152 Nm @ 3250 RPM). This means 2009 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1981 Citroen CX.
Compare all specifications:
| 2009 Audi S4 | 1981 Citroen CX | |
| Make | Audi | Citroen |
| Model | S4 | CX |
| Year Released | 2009 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 1995 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 2 valves |
| Horse Power | 340 HP | 105 HP |
| Engine RPM | 7000 RPM | 5500 RPM |
| Torque | 410 Nm | 152 Nm |
| Torque RPM | 3500 RPM | 3250 RPM |
| Engine Bore Size | 84.6 mm | 86 mm |
| Engine Stroke Size | 92.8 mm | 85.5 mm |
| Engine Compression Ratio | 18.0:1 | 9.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 930 kg | 1225 kg |
| Vehicle Length | 4580 mm | 4670 mm |
| Vehicle Width | 1780 mm | 1770 mm |
| Vehicle Height | 1400 mm | 1370 mm |
| Wheelbase Size | 2660 mm | 2750 mm |
| Fuel Consumption Overall | 15.7 L/100km | 5.2 L/100km |
| Fuel Tank Capacity | 63 L | 80 L |
