2005 Cadillac CTS vs. 2009 Cadillac STS
To start off, 2009 Cadillac STS is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Cadillac CTS. In addition, the cost of maintenance, including insurance, on 2005 Cadillac CTS 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 111 more horse power than 2005 Cadillac CTS. (210 HP @ 6000 RPM) In normal driving conditions, 2009 Cadillac STS should accelerate faster than 2005 Cadillac CTS. With that said, vehicle weight also plays an important factor in acceleration. 2009 Cadillac STS weights approximately 228 kg more than 2005 Cadillac CTS. 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 2005 Cadillac CTS. 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) has 163 more torque (in Nm) than 2005 Cadillac CTS. (264 Nm). This means 2009 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2005 Cadillac CTS.
Compare all specifications:
| 2005 Cadillac CTS | 2009 Cadillac STS | |
| Make | Cadillac | Cadillac |
| Model | CTS | STS |
| Year Released | 2005 | 2009 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2786 cc | 4565 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 210 HP | 321 HP |
| Engine RPM | 6000 RPM | 6400 RPM |
| Torque | 264 Nm | 427 Nm |
| Engine Bore Size | 89 mm | 93 mm |
| Engine Stroke Size | 75 mm | 84 mm |
| Engine Compression Ratio | 10.0:1 | 10.5:1 |
| Drive Type | Rear | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1592 kg | 1820 kg |
| Vehicle Length | 4840 mm | 4990 mm |
| Vehicle Width | 1800 mm | 1850 mm |
| Vehicle Height | 1450 mm | 1470 mm |
| Wheelbase Size | 2890 mm | 2960 mm |
| Fuel Consumption | 8.9 L/100km | 9.1 L/100km |
| Fuel Consumption City | 14 L/100km | 13.8 L/100km |
| Fuel Consumption Overall | 11.4 L/100km | 16.8 L/100km |
| Fuel Tank Capacity | 64 L | 66 L |
