2009 Audi RS6 vs. 2006 Cadillac CTS
To start off, 2009 Audi RS6 is newer by 3 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 4,991 cc (10 cylinders), 2009 Audi RS6 is equipped with a bigger engine. In terms of performance, 2009 Audi RS6 (572 HP @ 6250 RPM) has 361 more horse power than 2006 Cadillac CTS. (211 HP @ 6500 RPM). In normal driving conditions, 2009 Audi RS6 should accelerate faster than 2006 Cadillac CTS. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi RS6 weights approximately 436 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 2009 Audi RS6 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, 2009 Audi RS6 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 Audi RS6 (650 Nm @ 1500 RPM) has 387 more torque (in Nm) than 2006 Cadillac CTS. (263 Nm @ 3300 RPM). This means 2009 Audi RS6 will have an easier job in driving up hills or pulling heavy equipment than 2006 Cadillac CTS.
Compare all specifications:
| 2009 Audi RS6 | 2006 Cadillac CTS | |
| Make | Audi | Cadillac |
| Model | RS6 | CTS |
| Year Released | 2009 | 2006 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4991 cc | 2786 cc |
| Engine Cylinders | 10 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 572 HP | 211 HP |
| Engine RPM | 6250 RPM | 6500 RPM |
| Torque | 650 Nm | 263 Nm |
| Torque RPM | 1500 RPM | 3300 RPM |
| Engine Compression Ratio | 10.5:1 | 9.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 2028 kg | 1592 kg |
| Vehicle Length | 4930 mm | 4840 mm |
| Vehicle Width | 1900 mm | 1800 mm |
| Vehicle Height | 1470 mm | 1450 mm |
| Wheelbase Size | 2850 mm | 2890 mm |
| Fuel Consumption Overall | 14 L/100km | 11.2 L/100km |
| Fuel Tank Capacity | 80 L | 64 L |
