2008 Acura RDX vs. 1956 Armstrong Siddeley Sapphire
To start off, 2008 Acura RDX is newer by 52 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 2,307 cc (6 cylinders), 1956 Armstrong Siddeley Sapphire is equipped with a bigger engine. In terms of performance, 2008 Acura RDX (240 HP @ 6000 RPM) has 155 more horse power than 1956 Armstrong Siddeley Sapphire. (85 HP @ 4400 RPM). In normal driving conditions, 2008 Acura RDX should accelerate faster than 1956 Armstrong Siddeley Sapphire. With that said, vehicle weight also plays an important factor in acceleration. 2008 Acura RDX weights approximately 90 kg more than 1956 Armstrong Siddeley Sapphire. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 Acura RDX is four wheel drive (4WD), it will have significant more traction and grip than 1956 Armstrong Siddeley Sapphire. In wet, icy, snow, or gravel driving conditions, 2008 Acura RDX 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, 2008 Acura RDX (353 Nm @ 4500 RPM) has 193 more torque (in Nm) than 1956 Armstrong Siddeley Sapphire. (160 Nm @ 1750 RPM). This means 2008 Acura RDX will have an easier job in driving up hills or pulling heavy equipment than 1956 Armstrong Siddeley Sapphire. 2008 Acura RDX has automatic transmission and 1956 Armstrong Siddeley Sapphire has manual transmission. 1956 Armstrong Siddeley Sapphire will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2008 Acura RDX will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 Acura RDX | 1956 Armstrong Siddeley Sapphire | |
| Make | Acura | Armstrong Siddeley |
| Model | RDX | Sapphire |
| Year Released | 2008 | 1956 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2299 cc | 2307 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 240 HP | 85 HP |
| Engine RPM | 6000 RPM | 4400 RPM |
| Torque | 353 Nm | 160 Nm |
| Torque RPM | 4500 RPM | 1750 RPM |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1450 kg | 1360 kg |
| Vehicle Length | 4600 mm | 4580 mm |
| Vehicle Width | 1880 mm | 1730 mm |
| Vehicle Height | 1660 mm | 1570 mm |
| Wheelbase Size | 2660 mm | 2900 mm |
