2009 Cadillac CTS vs. 2007 Cadillac STS
To start off, 2009 Cadillac CTS is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Cadillac STS. In addition, the cost of maintenance, including insurance, on 2007 Cadillac STS would be higher. At 5,664 cc (8 cylinders), 2009 Cadillac CTS is equipped with a bigger engine. In terms of performance, 2009 Cadillac CTS (395 HP @ 6000 RPM) has 74 more horse power than 2007 Cadillac STS. (321 HP @ 6400 RPM). In normal driving conditions, 2009 Cadillac CTS should accelerate faster than 2007 Cadillac STS. With that said, vehicle weight also plays an important factor in acceleration. 2009 Cadillac CTS weights approximately 110 kg more than 2007 Cadillac STS. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Cadillac CTS is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2009 Cadillac CTS. However, in wet, icy, snow, or gravel driving conditions, 2007 Cadillac STS, being front wheel drive (FWD), will offer much better control with better grip. 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 CTS (536 Nm @ 4800 RPM) has 109 more torque (in Nm) than 2007 Cadillac STS. (427 Nm @ 4400 RPM). This means 2009 Cadillac CTS will have an easier job in driving up hills or pulling heavy equipment than 2007 Cadillac STS.
Compare all specifications:
| 2009 Cadillac CTS | 2007 Cadillac STS | |
| Make | Cadillac | Cadillac |
| Model | CTS | STS |
| Year Released | 2009 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5664 cc | 4565 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 395 HP | 321 HP |
| Engine RPM | 6000 RPM | 6400 RPM |
| Torque | 536 Nm | 427 Nm |
| Torque RPM | 4800 RPM | 4400 RPM |
| Engine Bore Size | 99 mm | 93 mm |
| Engine Stroke Size | 92 mm | 84 mm |
| Engine Compression Ratio | 10.0:1 | 10.5:1 |
| Drive Type | Rear | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1745 kg | 1635 kg |
| Vehicle Length | 4870 mm | 4990 mm |
| Vehicle Width | 1800 mm | 1850 mm |
| Vehicle Height | 1460 mm | 1470 mm |
| Wheelbase Size | 2890 mm | 2960 mm |
| Fuel Consumption Overall | 14 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 68 L | 64 L |
