1951 Alfa Romeo 6C vs. 2009 Cadillac STS
To start off, 2009 Cadillac STS is newer by 58 year(s). Which means there will be less support and parts availability for 1951 Alfa Romeo 6C. In addition, the cost of maintenance, including insurance, on 1951 Alfa Romeo 6C would be higher. At 4,565 cc (8 cylinders), 2009 Cadillac STS is equipped with a bigger engine. In terms of performance, 2009 Cadillac STS (321 HP @ 6400 RPM) has 217 more horse power than 1951 Alfa Romeo 6C. (104 HP @ 4800 RPM) In normal driving conditions, 2009 Cadillac STS should accelerate faster than 1951 Alfa Romeo 6C. With that said, vehicle weight also plays an important factor in acceleration. 2009 Cadillac STS weights approximately 420 kg more than 1951 Alfa Romeo 6C. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Cadillac STS is four wheel drive (4WD), it will have significant more traction and grip than 1951 Alfa Romeo 6C. In wet, icy, snow, or gravel driving conditions, 2009 Cadillac STS 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. 2009 Cadillac STS has automatic transmission and 1951 Alfa Romeo 6C has manual transmission. 1951 Alfa Romeo 6C will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Cadillac STS will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1951 Alfa Romeo 6C | 2009 Cadillac STS | |
| Make | Alfa Romeo | Cadillac |
| Model | 6C | STS |
| Year Released | 1951 | 2009 |
| Engine Position | Front | Front |
| Engine Size | 2443 cc | 4565 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 104 HP | 321 HP |
| Engine RPM | 4800 RPM | 6400 RPM |
| Engine Bore Size | 72 mm | 93 mm |
| Engine Stroke Size | 100 mm | 84 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 165 km/hour | 250 km/hour |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1400 kg | 1820 kg |
| Vehicle Length | 4690 mm | 4990 mm |
| Vehicle Width | 1910 mm | 1850 mm |
| Vehicle Height | 1510 mm | 1470 mm |
| Wheelbase Size | 2710 mm | 2960 mm |
