2003 AC Cobra vs. 2009 Cadillac STS
To start off, 2009 Cadillac STS is newer by 6 year(s). Which means there will be less support and parts availability for 2003 AC Cobra. In addition, the cost of maintenance, including insurance, on 2003 AC Cobra would be higher. At 4,565 cc (8 cylinders), 2009 Cadillac STS is equipped with a bigger engine. In terms of performance, 2003 AC Cobra (350 HP @ 6500 RPM) has 29 more horse power than 2009 Cadillac STS. (321 HP @ 6400 RPM). In normal driving conditions, 2003 AC Cobra should accelerate faster than 2009 Cadillac STS. With that said, vehicle weight also plays an important factor in acceleration. 2009 Cadillac STS weights approximately 758 kg more than 2003 AC Cobra.
Because 2009 Cadillac STS is four wheel drive (4WD), it will have significant more traction and grip than 2003 AC Cobra. 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. Let's talk about torque, 2009 Cadillac STS (427 Nm @ 4400 RPM) has 27 more torque (in Nm) than 2003 AC Cobra. (400 Nm @ 4000 RPM). This means 2009 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2003 AC Cobra. 2009 Cadillac STS has automatic transmission and 2003 AC Cobra has manual transmission. 2003 AC Cobra 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:
| 2003 AC Cobra | 2009 Cadillac STS | |
| Make | AC | Cadillac |
| Model | Cobra | STS |
| Year Released | 2003 | 2009 |
| Body Type | Roadster | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3506 cc | 4565 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 350 HP | 321 HP |
| Engine RPM | 6500 RPM | 6400 RPM |
| Torque | 400 Nm | 427 Nm |
| Torque RPM | 4000 RPM | 4400 RPM |
| Engine Bore Size | 83 mm | 93 mm |
| Engine Stroke Size | 81 mm | 84 mm |
| Engine Compression Ratio | 8.0:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1062 kg | 1820 kg |
| Vehicle Length | 4210 mm | 4990 mm |
| Vehicle Width | 1750 mm | 1850 mm |
| Vehicle Height | 1210 mm | 1470 mm |
| Wheelbase Size | 2300 mm | 2960 mm |
