2009 Citroen C6 vs. 1971 Riley 4
To start off, 2009 Citroen C6 is newer by 38 year(s). Which means there will be less support and parts availability for 1971 Riley 4. In addition, the cost of maintenance, including insurance, on 1971 Riley 4 would be higher. At 2,993 cc (6 cylinders), 2009 Citroen C6 is equipped with a bigger engine. In terms of performance, 2009 Citroen C6 (209 HP @ 6000 RPM) has 142 more horse power than 1971 Riley 4. (67 HP @ 5000 RPM). In normal driving conditions, 2009 Citroen C6 should accelerate faster than 1971 Riley 4. With that said, vehicle weight also plays an important factor in acceleration. 2009 Citroen C6 weights approximately 667 kg more than 1971 Riley 4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1971 Riley 4 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 1971 Riley 4. However, in wet, icy, snow, or gravel driving conditions, 2009 Citroen C6, being front wheel drive (FWD), will offer much better control with better grip. 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 Citroen C6 (290 Nm @ 3750 RPM) has 169 more torque (in Nm) than 1971 Riley 4. (121 Nm @ 2500 RPM). This means 2009 Citroen C6 will have an easier job in driving up hills or pulling heavy equipment than 1971 Riley 4.
Compare all specifications:
| 2009 Citroen C6 | 1971 Riley 4 | |
| Make | Citroen | Riley |
| Model | C6 | 4 |
| Year Released | 2009 | 1971 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 1622 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 209 HP | 67 HP |
| Engine RPM | 6000 RPM | 5000 RPM |
| Torque | 290 Nm | 121 Nm |
| Torque RPM | 3750 RPM | 2500 RPM |
| Engine Bore Size | 87 mm | 76.3 mm |
| Engine Stroke Size | 82.6 mm | 88.9 mm |
| Engine Compression Ratio | 10.9:1 | 8.3:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Front | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1815 kg | 1148 kg |
| Vehicle Length | 4910 mm | 4540 mm |
| Vehicle Width | 1870 mm | 1620 mm |
| Vehicle Height | 1470 mm | 1510 mm |
| Wheelbase Size | 2910 mm | 2530 mm |
