2009 Audi A4 vs. 2007 Cadillac STS
To start off, 2009 Audi A4 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 (321 HP @ 6400 RPM) has 163 more horse power than 2009 Audi A4. (158 HP @ 4500 RPM) In normal driving conditions, 2007 Cadillac STS should accelerate faster than 2009 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2007 Cadillac STS weights approximately 705 kg more than 2009 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. 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, 2007 Cadillac STS (427 Nm @ 4400 RPM) has 177 more torque (in Nm) than 2009 Audi A4. (250 Nm @ 1500 RPM). This means 2007 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A4.
Compare all specifications:
| 2009 Audi A4 | 2007 Cadillac STS | |
| Make | Audi | Cadillac |
| Model | A4 | STS |
| Year Released | 2009 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1798 cc | 4565 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 158 HP | 321 HP |
| Engine RPM | 4500 RPM | 6400 RPM |
| Torque | 250 Nm | 427 Nm |
| Torque RPM | 1500 RPM | 4400 RPM |
| Engine Bore Size | 82.5 mm | 93 mm |
| Engine Stroke Size | 84.1 mm | 84 mm |
| Engine Compression Ratio | 9.6:1 | 10.5:1 |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 930 kg | 1635 kg |
| Vehicle Length | 4710 mm | 4990 mm |
| Vehicle Width | 2010 mm | 1850 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2810 mm | 2960 mm |
| Fuel Consumption Overall | 7.4 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 65 L | 64 L |
