1955 Armstrong Siddeley Sapphire vs. 2005 Audi S4
To start off, 2005 Audi S4 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 4,163 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2005 Audi S4 (340 HP @ 6300 RPM) has 255 more horse power than 1955 Armstrong Siddeley Sapphire. (85 HP @ 4400 RPM) In normal driving conditions, 2005 Audi S4 should accelerate faster than 1955 Armstrong Siddeley Sapphire. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 375 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.
Let's talk about torque, 2005 Audi S4 (410 Nm) has 250 more torque (in Nm) than 1955 Armstrong Siddeley Sapphire. (160 Nm). This means 2005 Audi S4 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 Audi S4 | |
| Make | Armstrong Siddeley | Audi |
| Model | Sapphire | S4 |
| Year Released | 1955 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2309 cc | 4163 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 5 valves |
| Horse Power | 85 HP | 340 HP |
| Engine RPM | 4400 RPM | 6300 RPM |
| Torque | 160 Nm | 410 Nm |
| Engine Bore Size | 70 mm | 85.1 mm |
| Engine Stroke Size | 100 mm | 93 mm |
| Engine Compression Ratio | 7.5:1 | 11.0:1 |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1360 kg | 1735 kg |
| Vehicle Length | 4580 mm | 4550 mm |
| Vehicle Width | 1730 mm | 1770 mm |
| Vehicle Height | 1570 mm | 1430 mm |
| Wheelbase Size | 2900 mm | 2660 mm |
