2006 Cadillac CTS vs. 2008 Cadillac STS
To start off, 2008 Cadillac STS is newer by 2 year(s). Which means there will be less support and parts availability for 2006 Cadillac CTS. In addition, the cost of maintenance, including insurance, on 2006 Cadillac CTS would be higher. At 4,565 cc (8 cylinders), 2008 Cadillac STS is equipped with a bigger engine. In terms of performance, 2008 Cadillac STS (320 HP @ 6400 RPM) has 109 more horse power than 2006 Cadillac CTS. (211 HP @ 6500 RPM) In normal driving conditions, 2008 Cadillac STS should accelerate faster than 2006 Cadillac CTS. With that said, vehicle weight also plays an important factor in acceleration. 2008 Cadillac STS weights approximately 43 kg more than 2006 Cadillac CTS. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 Cadillac STS is four wheel drive (4WD), it will have significant more traction and grip than 2006 Cadillac CTS. In wet, icy, snow, or gravel driving conditions, 2008 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, 2008 Cadillac STS (427 Nm @ 4400 RPM) has 164 more torque (in Nm) than 2006 Cadillac CTS. (263 Nm @ 3300 RPM). This means 2008 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2006 Cadillac CTS.
Compare all specifications:
| 2006 Cadillac CTS | 2008 Cadillac STS | |
| Make | Cadillac | Cadillac |
| Model | CTS | STS |
| Year Released | 2006 | 2008 |
| 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 | 211 HP | 320 HP |
| Engine RPM | 6500 RPM | 6400 RPM |
| Torque | 263 Nm | 427 Nm |
| Torque RPM | 3300 RPM | 4400 RPM |
| Engine Compression Ratio | 9.5:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1592 kg | 1635 kg |
| Vehicle Length | 4840 mm | 5000 mm |
| Vehicle Width | 1800 mm | 1850 mm |
| Vehicle Height | 1450 mm | 1470 mm |
| Wheelbase Size | 2890 mm | 2960 mm |
| Fuel Consumption | 8.7 L/100km | 9.8 L/100km |
| Fuel Consumption City | 13.8 L/100km | 15.7 L/100km |
| Fuel Consumption Overall | 11.2 L/100km | 13.1 L/100km |
| Fuel Tank Capacity | 64 L | 64 L |
