2009 Audi A3 vs. 2007 Cadillac STS
To start off, 2009 Audi A3 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 3,556 cc (6 cylinders), 2007 Cadillac STS is equipped with a bigger engine. In terms of performance, 2007 Cadillac STS (254 HP @ 6500 RPM) has 54 more horse power than 2009 Audi A3. (200 HP @ 5100 RPM) In normal driving conditions, 2007 Cadillac STS should accelerate faster than 2009 Audi A3. With that said, vehicle weight also plays an important factor in acceleration. 2007 Cadillac STS weights approximately 752 kg more than 2009 Audi A3. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Cadillac STS is four wheel drive (4WD), it will have significant more traction and grip than 2009 Audi A3. In wet, icy, snow, or gravel driving conditions, 2007 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, 2007 Cadillac STS (342 Nm @ 3200 RPM) has 61 more torque (in Nm) than 2009 Audi A3. (281 Nm @ 1800 RPM). This means 2007 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A3.
Compare all specifications:
| 2009 Audi A3 | 2007 Cadillac STS | |
| Make | Audi | Cadillac |
| Model | A3 | STS |
| Year Released | 2009 | 2007 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1983 cc | 3556 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 200 HP | 254 HP |
| Engine RPM | 5100 RPM | 6500 RPM |
| Torque | 281 Nm | 342 Nm |
| Torque RPM | 1800 RPM | 3200 RPM |
| Engine Bore Size | 82.6 mm | 94 mm |
| Engine Stroke Size | 92.8 mm | 85.6 mm |
| Engine Compression Ratio | 10.5:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 3 doors | 4 doors |
| Vehicle Weight | 1030 kg | 1782 kg |
| Vehicle Length | 4290 mm | 4990 mm |
| Vehicle Width | 1970 mm | 1850 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2580 mm | 2960 mm |
| Fuel Consumption City | 10.7 L/100km | 13.1 L/100km |
| Fuel Consumption Overall | 9.8 L/100km | 12.4 L/100km |
| Fuel Tank Capacity | 55 L | 66 L |
