2009 Audi A6 vs. 2007 Cadillac STS
To start off, 2009 Audi A6 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 4,565 cc (8 cylinders), 2007 Cadillac STS is equipped with a bigger engine. In terms of performance, 2007 Cadillac STS (320 HP @ 6400 RPM) has 91 more horse power than 2009 Audi A6. (229 HP @ 4000 RPM) In normal driving conditions, 2007 Cadillac STS should accelerate faster than 2009 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 2007 Cadillac STS weights approximately 708 kg more than 2009 Audi A6. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Audi A6 is four wheel drive (4WD), it will have significant more traction and grip than 2007 Cadillac STS. In wet, icy, snow, or gravel driving conditions, 2009 Audi A6 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 A6 (450 Nm @ 1400 RPM) has 23 more torque (in Nm) than 2007 Cadillac STS. (427 Nm @ 4400 RPM). This means 2009 Audi A6 will have an easier job in driving up hills or pulling heavy equipment than 2007 Cadillac STS.
Compare all specifications:
| 2009 Audi A6 | 2007 Cadillac STS | |
| Make | Audi | Cadillac |
| Model | A6 | STS |
| Year Released | 2009 | 2007 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2966 cc | 4565 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 229 HP | 320 HP |
| Engine RPM | 4000 RPM | 6400 RPM |
| Torque | 450 Nm | 427 Nm |
| Torque RPM | 1400 RPM | 4400 RPM |
| Engine Bore Size | 83 mm | 93 mm |
| Engine Stroke Size | 91.4 mm | 84 mm |
| Engine Compression Ratio | 17.0:1 | 10.5:1 |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 930 kg | 1638 kg |
| Vehicle Length | 4940 mm | 4990 mm |
| Vehicle Width | 1470 mm | 1850 mm |
| Vehicle Height | 1860 mm | 1470 mm |
| Wheelbase Size | 2850 mm | 2960 mm |
| Fuel Consumption Overall | 8.4 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 70 L | 64 L |
