1958 Armstrong Siddeley Star Sapphire vs. 2006 BMW X5
To start off, 2006 BMW X5 is newer by 48 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 3,990 cc (6 cylinders), 1958 Armstrong Siddeley Star Sapphire is equipped with a bigger engine. In terms of performance, 2006 BMW X5 (228 HP @ 3500 RPM) has 83 more horse power than 1958 Armstrong Siddeley Star Sapphire. (145 HP @ 4250 RPM) In normal driving conditions, 2006 BMW X5 should accelerate faster than 1958 Armstrong Siddeley Star Sapphire. With that said, vehicle weight also plays an important factor in acceleration. 1958 Armstrong Siddeley Star Sapphire weights approximately 148 kg more than 2006 BMW X5.
Because 2006 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 1958 Armstrong Siddeley Star Sapphire. In wet, icy, snow, or gravel driving conditions, 2006 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, 1958 Armstrong Siddeley Star Sapphire (312 Nm @ 2000 RPM) has 12 more torque (in Nm) than 2006 BMW X5. (300 Nm @ 3500 RPM). This means 1958 Armstrong Siddeley Star Sapphire will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW X5. 1958 Armstrong Siddeley Star Sapphire has automatic transmission and 2006 BMW X5 has manual transmission. 2006 BMW X5 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1958 Armstrong Siddeley Star Sapphire will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1958 Armstrong Siddeley Star Sapphire | 2006 BMW X5 | |
| Make | Armstrong Siddeley | BMW |
| Model | Star Sapphire | X5 |
| Year Released | 1958 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 3990 cc | 2979 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 145 HP | 228 HP |
| Engine RPM | 4250 RPM | 3500 RPM |
| Torque | 312 Nm | 300 Nm |
| Torque RPM | 2000 RPM | 3500 RPM |
| Engine Bore Size | 97.1 mm | 84 mm |
| Engine Stroke Size | 90 mm | 89.6 mm |
| Engine Compression Ratio | 7.5:1 | 10.2:1 |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1778 kg | 1630 kg |
| Vehicle Length | 4940 mm | 4670 mm |
| Vehicle Width | 1890 mm | 1880 mm |
| Vehicle Height | 1580 mm | 1720 mm |
| Wheelbase Size | 2900 mm | 2830 mm |
| Fuel Tank Capacity | 72 L | 93 L |
