2007 Alpina B7 vs. 1955 Armstrong Siddeley Sapphire
To start off, 2007 Alpina B7 is newer by 52 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 4,396 cc (8 cylinders), 2007 Alpina B7 is equipped with a bigger engine. In terms of performance, 2007 Alpina B7 (493 HP @ 5500 RPM) has 368 more horse power than 1955 Armstrong Siddeley Sapphire. (125 HP @ 4700 RPM). In normal driving conditions, 2007 Alpina B7 should accelerate faster than 1955 Armstrong Siddeley Sapphire. With that said, vehicle weight also plays an important factor in acceleration. 2007 Alpina B7 weights approximately 130 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.
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, 2007 Alpina B7 (700 Nm @ 4250 RPM) has 453 more torque (in Nm) than 1955 Armstrong Siddeley Sapphire. (247 Nm @ 2000 RPM). This means 2007 Alpina B7 will have an easier job in driving up hills or pulling heavy equipment than 1955 Armstrong Siddeley Sapphire. 2007 Alpina B7 has automatic transmission and 1955 Armstrong Siddeley Sapphire has manual transmission. 1955 Armstrong Siddeley Sapphire will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Alpina B7 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 Alpina B7 | 1955 Armstrong Siddeley Sapphire | |
| Make | Alpina | Armstrong Siddeley |
| Model | B7 | Sapphire |
| Year Released | 2007 | 1955 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4396 cc | 3435 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 493 HP | 125 HP |
| Engine RPM | 5500 RPM | 4700 RPM |
| Torque | 700 Nm | 247 Nm |
| Torque RPM | 4250 RPM | 2000 RPM |
| Engine Bore Size | 92 mm | 90 mm |
| Engine Stroke Size | 82.7 mm | 90 mm |
| Engine Compression Ratio | 9.0:1 | 7.0:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 7 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1960 kg | 1830 kg |
| Vehicle Length | 5040 mm | 5390 mm |
| Vehicle Width | 1910 mm | 1840 mm |
| Vehicle Height | 1480 mm | 1680 mm |
| Wheelbase Size | 3000 mm | 3380 mm |
| Fuel Tank Capacity | 88 L | 72 L |
