1955 Armstrong Siddeley Sapphire vs. 2005 BMW X5
To start off, 2005 BMW X5 is newer by 50 year(s). Which means there will be less support and parts availability for 1955 Armstrong Siddeley Sapphire. In addition, the cost of maintenance, including insurance, on 1955 Armstrong Siddeley Sapphire would be higher. At 3,435 cc (6 cylinders), 1955 Armstrong Siddeley Sapphire is equipped with a bigger engine. In terms of performance, 2005 BMW X5 (215 HP @ 4000 RPM) has 90 more horse power than 1955 Armstrong Siddeley Sapphire. (125 HP @ 4700 RPM) In normal driving conditions, 2005 BMW X5 should accelerate faster than 1955 Armstrong Siddeley Sapphire. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW X5 weights approximately 340 kg more than 1955 Armstrong Siddeley Sapphire. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 1955 Armstrong Siddeley Sapphire. In wet, icy, snow, or gravel driving conditions, 2005 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, 2005 BMW X5 (520 Nm @ 2000 RPM) has 273 more torque (in Nm) than 1955 Armstrong Siddeley Sapphire. (247 Nm @ 2000 RPM). This means 2005 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 1955 Armstrong Siddeley Sapphire.
Compare all specifications:
| 1955 Armstrong Siddeley Sapphire | 2005 BMW X5 | |
| Make | Armstrong Siddeley | BMW |
| Model | Sapphire | X5 |
| Year Released | 1955 | 2005 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 3435 cc | 2926 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 125 HP | 215 HP |
| Engine RPM | 4700 RPM | 4000 RPM |
| Torque | 247 Nm | 520 Nm |
| Torque RPM | 2000 RPM | 2000 RPM |
| Engine Bore Size | 90 mm | 84 mm |
| Engine Stroke Size | 90 mm | 90 mm |
| Engine Compression Ratio | 7.0:1 | 18.0:1 |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 7 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1830 kg | 2170 kg |
| Vehicle Length | 5390 mm | 4670 mm |
| Vehicle Width | 1840 mm | 1880 mm |
| Vehicle Height | 1680 mm | 1720 mm |
| Wheelbase Size | 3380 mm | 2830 mm |
| Fuel Tank Capacity | 72 L | 93 L |
