1958 Armstrong Siddeley Star Sapphire vs. 2011 BMW X5
To start off, 2011 BMW X5 is newer by 53 year(s). Which means there will be less support and parts availability for 1958 Armstrong Siddeley Star Sapphire. In addition, the cost of maintenance, including insurance, on 1958 Armstrong Siddeley Star Sapphire would be higher. At 4,400 cc (8 cylinders), 2011 BMW X5 is equipped with a bigger engine. In terms of performance, 2011 BMW X5 (400 HP @ 5500 RPM) has 255 more horse power than 1958 Armstrong Siddeley Star Sapphire. (145 HP @ 4250 RPM) In normal driving conditions, 2011 BMW X5 should accelerate faster than 1958 Armstrong Siddeley Star Sapphire. With that said, vehicle weight also plays an important factor in acceleration. 2011 BMW X5 weights approximately 662 kg more than 1958 Armstrong Siddeley Star Sapphire. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2011 BMW X5 is all wheel drive (AWD), it will have significant more traction and grip than 1958 Armstrong Siddeley Star Sapphire. In wet, icy, snow, or gravel driving conditions, 2011 BMW X5 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, 2011 BMW X5 (609 Nm @ 1750 RPM) has 297 more torque (in Nm) than 1958 Armstrong Siddeley Star Sapphire. (312 Nm @ 2000 RPM). This means 2011 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 1958 Armstrong Siddeley Star Sapphire.
Compare all specifications:
| 1958 Armstrong Siddeley Star Sapphire | 2011 BMW X5 | |
| Make | Armstrong Siddeley | BMW |
| Model | Star Sapphire | X5 |
| Year Released | 1958 | 2011 |
| Engine Position | Front | Front |
| Engine Size | 3990 cc | 4400 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 145 HP | 400 HP |
| Engine RPM | 4250 RPM | 5500 RPM |
| Torque | 312 Nm | 609 Nm |
| Torque RPM | 2000 RPM | 1750 RPM |
| Drive Type | Rear | AWD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1778 kg | 2440 kg |
| Vehicle Length | 4940 mm | 4857 mm |
| Vehicle Width | 1890 mm | 1933 mm |
| Vehicle Height | 1580 mm | 1776 mm |
| Wheelbase Size | 2900 mm | 2934 mm |
| Fuel Tank Capacity | 72 L | 85 L |
