2003 Audi A3 vs. 2009 Cadillac STS
To start off, 2009 Cadillac STS is newer by 6 year(s). Which means there will be less support and parts availability for 2003 Audi A3. In addition, the cost of maintenance, including insurance, on 2003 Audi A3 would be higher. At 4,565 cc (8 cylinders), 2009 Cadillac STS is equipped with a bigger engine. In terms of performance, 2009 Cadillac STS (321 HP @ 6400 RPM) has 75 more horse power than 2003 Audi A3. (246 HP @ 6300 RPM) In normal driving conditions, 2009 Cadillac STS should accelerate faster than 2003 Audi A3. With that said, vehicle weight also plays an important factor in acceleration. 2003 Audi A3 weights approximately 60 kg more than 2009 Cadillac STS.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or 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, 2009 Cadillac STS (427 Nm @ 4400 RPM) has 117 more torque (in Nm) than 2003 Audi A3. (310 Nm @ 2500 RPM). This means 2009 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2003 Audi A3.
Compare all specifications:
| 2003 Audi A3 | 2009 Cadillac STS | |
| Make | Audi | Cadillac |
| Model | A3 | STS |
| Year Released | 2003 | 2009 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3188 cc | 4565 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 246 HP | 321 HP |
| Engine RPM | 6300 RPM | 6400 RPM |
| Torque | 310 Nm | 427 Nm |
| Torque RPM | 2500 RPM | 4400 RPM |
| Engine Bore Size | 84 mm | 93 mm |
| Engine Stroke Size | 95.9 mm | 84 mm |
| Top Speed | 245 km/hour | 250 km/hour |
| Acceleration 0-100mph | 6.7 seconds | 6.2 seconds |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 3 doors | 4 doors |
| Vehicle Weight | 1880 kg | 1820 kg |
| Vehicle Length | 4210 mm | 4990 mm |
| Vehicle Width | 1770 mm | 1850 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2580 mm | 2960 mm |
| Fuel Tank Capacity | 55 L | 66 L |
