2003 Audi A6 vs. 2006 Cadillac STS
To start off, 2006 Cadillac STS is newer by 3 year(s). Which means there will be less support and parts availability for 2003 Audi A6. In addition, the cost of maintenance, including insurance, on 2003 Audi A6 would be higher. At 4,556 cc (8 cylinders), 2006 Cadillac STS is equipped with a bigger engine. In terms of performance, 2006 Cadillac STS (320 HP @ 6400 RPM) has 73 more horse power than 2003 Audi A6. (247 HP @ 6300 RPM) In normal driving conditions, 2006 Cadillac STS should accelerate faster than 2003 Audi A6.
Because 2003 Audi A6 is four wheel drive (4WD), it will have significant more traction and grip than 2006 Cadillac STS. In wet, icy, snow, or gravel driving conditions, 2003 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, 2006 Cadillac STS (428 Nm @ 4400 RPM) has 89 more torque (in Nm) than 2003 Audi A6. (339 Nm @ 1800 RPM). This means 2006 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2003 Audi A6. 2006 Cadillac STS has automatic transmission and 2003 Audi A6 has manual transmission. 2003 Audi A6 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2006 Cadillac STS will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 Audi A6 | 2006 Cadillac STS | |
| Make | Audi | Cadillac |
| Model | A6 | STS |
| Year Released | 2003 | 2006 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2671 cc | 4556 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 247 HP | 320 HP |
| Engine RPM | 6300 RPM | 6400 RPM |
| Torque | 339 Nm | 428 Nm |
| Torque RPM | 1800 RPM | 4400 RPM |
| Engine Bore Size | 81 mm | 93 mm |
| Engine Stroke Size | 86 mm | 84 mm |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Length | 4800 mm | 4990 mm |
| Vehicle Width | 1860 mm | 1850 mm |
| Vehicle Height | 1560 mm | 1470 mm |
| Wheelbase Size | 2770 mm | 2960 mm |
| Fuel Tank Capacity | 70 L | 64 L |
