2009 Cadillac STS vs. 2013 Cadillac ATS
To start off, 2013 Cadillac ATS is newer by 4 year(s). Which means there will be less support and parts availability for 2009 Cadillac STS. In addition, the cost of maintenance, including insurance, on 2009 Cadillac STS would be higher. At 3,600 cc (6 cylinders), 2013 Cadillac ATS is equipped with a bigger engine. In terms of performance, 2013 Cadillac ATS (317 HP @ 6800 RPM) has 15 more horse power than 2009 Cadillac STS. (302 HP @ 6300 RPM) In normal driving conditions, 2013 Cadillac ATS should accelerate faster than 2009 Cadillac STS. With that said, vehicle weight also plays an important factor in acceleration. 2009 Cadillac STS weights approximately 65 kg more than 2013 Cadillac ATS.
Because 2013 Cadillac ATS is all wheel drive (AWD), it will have significant more traction and grip than 2009 Cadillac STS. In wet, icy, snow, or gravel driving conditions, 2013 Cadillac ATS 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, 2013 Cadillac ATS (373 Nm @ 4800 RPM) has 4 more torque (in Nm) than 2009 Cadillac STS. (369 Nm @ 5200 RPM). This means 2013 Cadillac ATS will have an easier job in driving up hills or pulling heavy equipment than 2009 Cadillac STS.
Compare all specifications:
| 2009 Cadillac STS | 2013 Cadillac ATS | |
| Make | Cadillac | Cadillac |
| Model | STS | ATS |
| Year Released | 2009 | 2013 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3599 cc | 3600 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 302 HP | 317 HP |
| Engine RPM | 6300 RPM | 6800 RPM |
| Torque | 369 Nm | 373 Nm |
| Torque RPM | 5200 RPM | 4800 RPM |
| Engine Compression Ratio | 11.3:1 | 11.5 |
| Fuel Type | Gasoline | Flex Fuel |
| Drive Type | Rear | AWD |
| Transmission Type | Automatic | 6-speed automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1635 kg | 1570 kg |
| Vehicle Length | 5000 mm | 4643 mm |
| Vehicle Width | 1850 mm | 1806 mm |
| Vehicle Height | 1470 mm | 1420 mm |
| Wheelbase Size | 2960 mm | 2776 mm |
| Fuel Consumption Highway | 9.1 L/100km | 9 L/100km |
| Fuel Consumption City | 13.8 L/100km | 13 L/100km |
| Fuel Tank Capacity | 64 L | 61 L |
