2009 Cadillac XLR vs. 1956 Rover P4
To start off, 2009 Cadillac XLR is newer by 53 year(s). Which means there will be less support and parts availability for 1956 Rover P4. In addition, the cost of maintenance, including insurance, on 1956 Rover P4 would be higher. At 4,565 cc (8 cylinders), 2009 Cadillac XLR is equipped with a bigger engine. In terms of performance, 2009 Cadillac XLR (322 HP @ 6450 RPM) has 214 more horse power than 1956 Rover P4. (108 HP @ 4250 RPM). In normal driving conditions, 2009 Cadillac XLR should accelerate faster than 1956 Rover P4. With that said, vehicle weight also plays an important factor in acceleration. 2009 Cadillac XLR weights approximately 274 kg more than 1956 Rover P4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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 Cadillac XLR (423 Nm @ 4400 RPM) has 217 more torque (in Nm) than 1956 Rover P4. (206 Nm @ 2500 RPM). This means 2009 Cadillac XLR will have an easier job in driving up hills or pulling heavy equipment than 1956 Rover P4. 2009 Cadillac XLR has automatic transmission and 1956 Rover P4 has manual transmission. 1956 Rover P4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Cadillac XLR will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Cadillac XLR | 1956 Rover P4 | |
| Make | Cadillac | Rover |
| Model | XLR | P4 |
| Year Released | 2009 | 1956 |
| Engine Position | Front | Front |
| Engine Size | 4565 cc | 2636 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 322 HP | 108 HP |
| Engine RPM | 6450 RPM | 4250 RPM |
| Torque | 423 Nm | 206 Nm |
| Torque RPM | 4400 RPM | 2500 RPM |
| Engine Bore Size | 93 mm | 73 mm |
| Engine Stroke Size | 84 mm | 105 mm |
| Engine Compression Ratio | 10.5:1 | 8.5:1 |
| Top Speed | 250 km/hour | 153 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1722 kg | 1448 kg |
| Vehicle Length | 4520 mm | 4530 mm |
| Vehicle Width | 1840 mm | 1670 mm |
| Vehicle Height | 1290 mm | 1320 mm |
| Wheelbase Size | 2690 mm | 2830 mm |
| Fuel Tank Capacity | 68 L | 52 L |
