1956 Cadillac 6239D vs. 2006 Smart Roadster
To start off, 2006 Smart Roadster is newer by 50 year(s). Which means there will be less support and parts availability for 1956 Cadillac 6239D. In addition, the cost of maintenance, including insurance, on 1956 Cadillac 6239D would be higher. At 5,972 cc (8 cylinders), 1956 Cadillac 6239D is equipped with a bigger engine. In terms of performance, 1956 Cadillac 6239D (285 HP @ 4600 RPM) has 204 more horse power than 2006 Smart Roadster. (81 HP @ 5250 RPM). In normal driving conditions, 1956 Cadillac 6239D should accelerate faster than 2006 Smart Roadster. With that said, vehicle weight also plays an important factor in acceleration. 1956 Cadillac 6239D weights approximately 1125 kg more than 2006 Smart Roadster. 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, 1956 Cadillac 6239D (543 Nm @ 2800 RPM) has 433 more torque (in Nm) than 2006 Smart Roadster. (110 Nm @ 3000 RPM). This means 1956 Cadillac 6239D will have an easier job in driving up hills or pulling heavy equipment than 2006 Smart Roadster.
Compare all specifications:
| 1956 Cadillac 6239D | 2006 Smart Roadster | |
| Make | Cadillac | Smart |
| Model | 6239D | Roadster |
| Year Released | 1956 | 2006 |
| Engine Position | Front | Rear |
| Engine Size | 5972 cc | 698 cc |
| Engine Cylinders | 8 cylinders | 3 cylinders |
| Engine Type | V | in-line |
| Horse Power | 285 HP | 81 HP |
| Engine RPM | 4600 RPM | 5250 RPM |
| Torque | 543 Nm | 110 Nm |
| Torque RPM | 2800 RPM | 3000 RPM |
| Engine Bore Size | 101.6 mm | 66.5 mm |
| Engine Stroke Size | 92.1 mm | 67 mm |
| Engine Compression Ratio | 9.7:1 | 9.0:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 2010 kg | 885 kg |
| Vehicle Length | 5650 mm | 3430 mm |
| Vehicle Width | 2040 mm | 1620 mm |
| Vehicle Height | 1520 mm | 1200 mm |
| Wheelbase Size | 3280 mm | 2370 mm |
| Fuel Tank Capacity | 75 L | 35 L |
