1989 Citroen XM vs. 1951 Rover P4
To start off, 1989 Citroen XM is newer by 38 year(s). Which means there will be less support and parts availability for 1951 Rover P4. In addition, the cost of maintenance, including insurance, on 1951 Rover P4 would be higher. At 2,975 cc (6 cylinders), 1989 Citroen XM is equipped with a bigger engine. In terms of performance, 1989 Citroen XM (168 HP @ 5600 RPM) has 93 more horse power than 1951 Rover P4. (75 HP @ 4200 RPM). In normal driving conditions, 1989 Citroen XM should accelerate faster than 1951 Rover P4. With that said, vehicle weight also plays an important factor in acceleration. 1989 Citroen XM weights approximately 30 kg more than 1951 Rover P4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1951 Rover P4 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 1951 Rover P4. However, in wet, icy, snow, or gravel driving conditions, 1989 Citroen XM, 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, 1989 Citroen XM (235 Nm @ 4800 RPM) has 85 more torque (in Nm) than 1951 Rover P4. (150 Nm @ 2500 RPM). This means 1989 Citroen XM will have an easier job in driving up hills or pulling heavy equipment than 1951 Rover P4.
Compare all specifications:
| 1989 Citroen XM | 1951 Rover P4 | |
| Make | Citroen | Rover |
| Model | XM | P4 |
| Year Released | 1989 | 1951 |
| Engine Position | Front | Front |
| Engine Size | 2975 cc | 2103 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 168 HP | 75 HP |
| Engine RPM | 5600 RPM | 4200 RPM |
| Torque | 235 Nm | 150 Nm |
| Torque RPM | 4800 RPM | 2500 RPM |
| Engine Bore Size | 93 mm | 65.2 mm |
| Engine Stroke Size | 73 mm | 105 mm |
| Engine Compression Ratio | 9.5:1 | 7.3:1 |
| Drive Type | Front | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1420 kg | 1390 kg |
| Vehicle Length | 4720 mm | 4590 mm |
| Vehicle Width | 1800 mm | 1670 mm |
| Vehicle Height | 1400 mm | 1620 mm |
| Wheelbase Size | 2860 mm | 2830 mm |
| Fuel Tank Capacity | 80 L | 52 L |
