2006 Cadillac STS vs. 1973 Sunbeam Rapier
To start off, 2006 Cadillac STS is newer by 33 year(s). Which means there will be less support and parts availability for 1973 Sunbeam Rapier. In addition, the cost of maintenance, including insurance, on 1973 Sunbeam Rapier would be higher. At 3,563 cc (6 cylinders), 2006 Cadillac STS is equipped with a bigger engine. In terms of performance, 2006 Cadillac STS (253 HP @ 6500 RPM) has 174 more horse power than 1973 Sunbeam Rapier. (79 HP @ 5200 RPM). In normal driving conditions, 2006 Cadillac STS should accelerate faster than 1973 Sunbeam Rapier. With that said, vehicle weight also plays an important factor in acceleration. 2006 Cadillac STS weights approximately 752 kg more than 1973 Sunbeam Rapier. 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, 2006 Cadillac STS (342 Nm @ 3200 RPM) has 216 more torque (in Nm) than 1973 Sunbeam Rapier. (126 Nm @ 3800 RPM). This means 2006 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 1973 Sunbeam Rapier.
Compare all specifications:
| 2006 Cadillac STS | 1973 Sunbeam Rapier | |
| Make | Cadillac | Sunbeam |
| Model | STS | Rapier |
| Year Released | 2006 | 1973 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 3563 cc | 1725 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 253 HP | 79 HP |
| Engine RPM | 6500 RPM | 5200 RPM |
| Torque | 342 Nm | 126 Nm |
| Torque RPM | 3200 RPM | 3800 RPM |
| Engine Bore Size | 94 mm | 81.5 mm |
| Engine Stroke Size | 85.6 mm | 82.7 mm |
| Engine Compression Ratio | 10.2:1 | 9.2:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1782 kg | 1030 kg |
| Vehicle Length | 4990 mm | 4440 mm |
| Vehicle Width | 1850 mm | 1670 mm |
| Vehicle Height | 1470 mm | 1390 mm |
| Wheelbase Size | 2960 mm | 2510 mm |
| Fuel Tank Capacity | 66 L | 68 L |
