2007 Audi RS4 vs. 2009 Cadillac STS
To start off, 2009 Cadillac STS is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Audi RS4. In addition, the cost of maintenance, including insurance, on 2007 Audi RS4 would be higher. At 4,564 cc (8 cylinders), 2009 Cadillac STS is equipped with a bigger engine. In terms of performance, 2007 Audi RS4 (414 HP @ 7800 RPM) has 94 more horse power than 2009 Cadillac STS. (320 HP @ 6400 RPM). In normal driving conditions, 2007 Audi RS4 should accelerate faster than 2009 Cadillac STS. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi RS4 weights approximately 15 kg more than 2009 Cadillac STS. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Audi RS4 is four wheel drive (4WD), it will have significant more traction and grip than 2009 Cadillac STS. In wet, icy, snow, or gravel driving conditions, 2007 Audi RS4 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 Audi RS4 (431 Nm @ 5500 RPM) has 4 more torque (in Nm) than 2009 Cadillac STS. (427 Nm @ 4400 RPM). This means 2007 Audi RS4 will have an easier job in driving up hills or pulling heavy equipment than 2009 Cadillac STS. 2009 Cadillac STS has automatic transmission and 2007 Audi RS4 has manual transmission. 2007 Audi RS4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Cadillac STS will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 Audi RS4 | 2009 Cadillac STS | |
| Make | Audi | Cadillac |
| Model | RS4 | STS |
| Year Released | 2007 | 2009 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 4564 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 414 HP | 320 HP |
| Engine RPM | 7800 RPM | 6400 RPM |
| Torque | 431 Nm | 427 Nm |
| Torque RPM | 5500 RPM | 4400 RPM |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1650 kg | 1635 kg |
| Vehicle Length | 4590 mm | 5000 mm |
| Vehicle Width | 1820 mm | 1850 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2660 mm | 2960 mm |
| Fuel Consumption Overall | 13.6 L/100km | 13.1 L/100km |
| Fuel Tank Capacity | 63 L | 64 L |
