2009 Audi A5 vs. 2008 Cadillac STS
To start off, 2009 Audi A5 is newer by 1 year(s). Which means there will be less support and parts availability for 2008 Cadillac STS. In addition, the cost of maintenance, including insurance, on 2008 Cadillac STS would be higher. At 4,565 cc (8 cylinders), 2008 Cadillac STS is equipped with a bigger engine. In terms of performance, 2008 Cadillac STS (321 HP @ 6400 RPM) has 134 more horse power than 2009 Audi A5. (187 HP @ 3500 RPM) In normal driving conditions, 2008 Cadillac STS should accelerate faster than 2009 Audi A5. With that said, vehicle weight also plays an important factor in acceleration. 2008 Cadillac STS weights approximately 237 kg more than 2009 Audi A5. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 Cadillac STS is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2008 Cadillac STS. However, in wet, icy, snow, or gravel driving conditions, 2009 Audi A5, being front wheel drive (FWD), will offer much better control with better grip. 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, 2008 Cadillac STS (427 Nm @ 4400 RPM) has 27 more torque (in Nm) than 2009 Audi A5. (400 Nm @ 1400 RPM). This means 2008 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A5.
Compare all specifications:
| 2009 Audi A5 | 2008 Cadillac STS | |
| Make | Audi | Cadillac |
| Model | A5 | STS |
| Year Released | 2009 | 2008 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2698 cc | 4565 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 187 HP | 321 HP |
| Engine RPM | 3500 RPM | 6400 RPM |
| Torque | 400 Nm | 427 Nm |
| Torque RPM | 1400 RPM | 4400 RPM |
| Engine Bore Size | 83 mm | 93 mm |
| Engine Stroke Size | 83.1 mm | 84 mm |
| Engine Compression Ratio | 16.8:1 | 10.5:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 232 km/hour | 250 km/hour |
| Acceleration 0-100mph | 7.9 seconds | 6.5 seconds |
| Drive Type | Front | Rear |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1575 kg | 1812 kg |
| Vehicle Length | 4630 mm | 4990 mm |
| Vehicle Width | 1860 mm | 1850 mm |
| Vehicle Height | 1380 mm | 1470 mm |
| Wheelbase Size | 2760 mm | 2960 mm |
| Fuel Consumption Overall | 6.7 L/100km | 14.5 L/100km |
| Fuel Tank Capacity | 65 L | 66 L |
