1956 Armstrong Siddeley Sapphire vs. 2006 BMW Z4
To start off, 2006 BMW Z4 is newer by 50 year(s). Which means there will be less support and parts availability for 1956 Armstrong Siddeley Sapphire. In addition, the cost of maintenance, including insurance, on 1956 Armstrong Siddeley Sapphire would be higher. At 3,246 cc (6 cylinders), 2006 BMW Z4 is equipped with a bigger engine. In terms of performance, 2006 BMW Z4 (343 HP @ 7900 RPM) has 258 more horse power than 1956 Armstrong Siddeley Sapphire. (85 HP @ 4400 RPM) In normal driving conditions, 2006 BMW Z4 should accelerate faster than 1956 Armstrong Siddeley Sapphire. With that said, vehicle weight also plays an important factor in acceleration. 1956 Armstrong Siddeley Sapphire weights approximately 28 kg more than 2006 BMW Z4.
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, 2006 BMW Z4 (495 Nm @ 4900 RPM) has 335 more torque (in Nm) than 1956 Armstrong Siddeley Sapphire. (160 Nm @ 1750 RPM). This means 2006 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 1956 Armstrong Siddeley Sapphire.
Compare all specifications:
| 1956 Armstrong Siddeley Sapphire | 2006 BMW Z4 | |
| Make | Armstrong Siddeley | BMW |
| Model | Sapphire | Z4 |
| Year Released | 1956 | 2006 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2307 cc | 3246 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 85 HP | 343 HP |
| Engine RPM | 4400 RPM | 7900 RPM |
| Torque | 160 Nm | 495 Nm |
| Torque RPM | 1750 RPM | 4900 RPM |
| Engine Compression Ratio | 7.5:1 | 11.5:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1360 kg | 1332 kg |
| Vehicle Length | 4580 mm | 4100 mm |
| Vehicle Width | 1730 mm | 1790 mm |
| Vehicle Height | 1570 mm | 1300 mm |
| Wheelbase Size | 2900 mm | 2500 mm |
