1956 AC Ace vs. 2009 Cadillac STS
To start off, 2009 Cadillac STS is newer by 53 year(s). Which means there will be less support and parts availability for 1956 AC Ace. In addition, the cost of maintenance, including insurance, on 1956 AC Ace would be higher. At 3,600 cc (6 cylinders), 2009 Cadillac STS is equipped with a bigger engine. In terms of performance, 2009 Cadillac STS (302 HP @ 6300 RPM) has 179 more horse power than 1956 AC Ace. (123 HP @ 6000 RPM) In normal driving conditions, 2009 Cadillac STS should accelerate faster than 1956 AC Ace. With that said, vehicle weight also plays an important factor in acceleration. 2009 Cadillac STS weights approximately 666 kg more than 1956 AC Ace. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2009 Cadillac STS (369 Nm) has 202 more torque (in Nm) than 1956 AC Ace. (167 Nm). This means 2009 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 1956 AC Ace. 2009 Cadillac STS has automatic transmission and 1956 AC Ace has manual transmission. 1956 AC Ace 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:
| 1956 AC Ace | 2009 Cadillac STS | |
| Make | AC | Cadillac |
| Model | Ace | STS |
| Year Released | 1956 | 2009 |
| Body Type | Roadster | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1971 cc | 3600 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 123 HP | 302 HP |
| Engine RPM | 6000 RPM | 6300 RPM |
| Torque | 167 Nm | 369 Nm |
| Fuel Type | Gasoline | Gasoline |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 894 kg | 1560 kg |
| Vehicle Length | 3850 mm | 5000 mm |
| Vehicle Width | 1520 mm | 1850 mm |
| Vehicle Height | 1250 mm | 1470 mm |
| Wheelbase Size | 2290 mm | 2960 mm |
| Fuel Tank Capacity | 59 L | 64 L |
