1957 Armstrong Siddeley Sapphire vs. 2011 Jaguar XJ
To start off, 2011 Jaguar XJ is newer by 54 year(s). Which means there will be less support and parts availability for 1957 Armstrong Siddeley Sapphire. In addition, the cost of maintenance, including insurance, on 1957 Armstrong Siddeley Sapphire would be higher. At 5,000 cc (8 cylinders), 2011 Jaguar XJ is equipped with a bigger engine. In terms of performance, 2011 Jaguar XJ (385 HP @ 6500 RPM) has 300 more horse power than 1957 Armstrong Siddeley Sapphire. (85 HP @ 4400 RPM) In normal driving conditions, 2011 Jaguar XJ should accelerate faster than 1957 Armstrong Siddeley Sapphire. With that said, vehicle weight also plays an important factor in acceleration. 2011 Jaguar XJ weights approximately 475 kg more than 1957 Armstrong Siddeley Sapphire. 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, 2011 Jaguar XJ (515 Nm @ 3500 RPM) has 354 more torque (in Nm) than 1957 Armstrong Siddeley Sapphire. (161 Nm @ 1750 RPM). This means 2011 Jaguar XJ will have an easier job in driving up hills or pulling heavy equipment than 1957 Armstrong Siddeley Sapphire.
Compare all specifications:
| 1957 Armstrong Siddeley Sapphire | 2011 Jaguar XJ | |
| Make | Armstrong Siddeley | Jaguar |
| Model | Sapphire | XJ |
| Year Released | 1957 | 2011 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2309 cc | 5000 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 85 HP | 385 HP |
| Engine RPM | 4400 RPM | 6500 RPM |
| Torque | 161 Nm | 515 Nm |
| Torque RPM | 1750 RPM | 3500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1360 kg | 1835 kg |
| Vehicle Length | 4580 mm | 5123 mm |
| Vehicle Width | 1750 mm | 1895 mm |
| Vehicle Height | 1570 mm | 1448 mm |
| Wheelbase Size | 2900 mm | 3033 mm |
| Fuel Tank Capacity | 72 L | 82 L |
