2009 Cadillac STS vs. 2007 Audi R8
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 R8. In addition, the cost of maintenance, including insurance, on 2007 Audi R8 would be higher. At 4,565 cc (8 cylinders), 2009 Cadillac STS is equipped with a bigger engine. In terms of performance, 2007 Audi R8 (414 HP @ 7800 RPM) has 93 more horse power than 2009 Cadillac STS. (321 HP @ 6400 RPM) In normal driving conditions, 2007 Audi R8 should accelerate faster than 2009 Cadillac STS. With that said, vehicle weight also plays an important factor in acceleration. 2009 Cadillac STS weights approximately 255 kg more than 2007 Audi R8.
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 R8 (430 Nm @ 4500 RPM) has 3 more torque (in Nm) than 2009 Cadillac STS. (427 Nm @ 4400 RPM). This means 2007 Audi R8 will have an easier job in driving up hills or pulling heavy equipment than 2009 Cadillac STS.
Compare all specifications:
| 2009 Cadillac STS | 2007 Audi R8 | |
| Make | Cadillac | Audi |
| Model | STS | R8 |
| Year Released | 2009 | 2007 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Middle |
| Engine Size | 4565 cc | 4163 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 321 HP | 414 HP |
| Engine RPM | 6400 RPM | 7800 RPM |
| Torque | 427 Nm | 430 Nm |
| Torque RPM | 4400 RPM | 4500 RPM |
| Engine Bore Size | 93 mm | 84.5 mm |
| Engine Stroke Size | 84 mm | 92.8 mm |
| Engine Compression Ratio | 10.5:1 | 12.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 250 km/hour | 301 km/hour |
| Acceleration 0-100mph | 6.2 seconds | 4.6 seconds |
| Drive Type | 4WD | AWD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1820 kg | 1565 kg |
| Vehicle Length | 4990 mm | 4590 mm |
| Vehicle Width | 1850 mm | 1910 mm |
| Vehicle Height | 1470 mm | 1260 mm |
| Wheelbase Size | 2960 mm | 2660 mm |
| Fuel Consumption Overall | 16.8 L/100km | 13.6 L/100km |
| Fuel Tank Capacity | 66 L | 75 L |
