2009 Cadillac STS vs. 2007 GMC Sierra
To start off, 2009 Cadillac STS is newer by 2 year(s). Which means there will be less support and parts availability for 2007 GMC Sierra. In addition, the cost of maintenance, including insurance, on 2007 GMC Sierra would be higher. At 4,802 cc (8 cylinders), 2007 GMC Sierra is equipped with a bigger engine. In terms of performance, 2009 Cadillac STS (302 HP @ 6300 RPM) has 7 more horse power than 2007 GMC Sierra. (295 HP @ 5600 RPM). In normal driving conditions, 2009 Cadillac STS should accelerate faster than 2007 GMC Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2007 GMC Sierra weights approximately 633 kg more than 2009 Cadillac STS.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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 GMC Sierra (414 Nm @ 4800 RPM) has 45 more torque (in Nm) than 2009 Cadillac STS. (369 Nm @ 5200 RPM). This means 2007 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2009 Cadillac STS.
Compare all specifications:
| 2009 Cadillac STS | 2007 GMC Sierra | |
| Make | Cadillac | GMC |
| Model | STS | Sierra |
| Year Released | 2009 | 2007 |
| Body Type | Sedan | Pickup |
| Engine Position | Front | Front |
| Engine Size | 3599 cc | 4802 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 302 HP | 295 HP |
| Engine RPM | 6300 RPM | 5600 RPM |
| Torque | 369 Nm | 414 Nm |
| Torque RPM | 5200 RPM | 4800 RPM |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 6 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1635 kg | 2268 kg |
| Vehicle Length | 5000 mm | 5850 mm |
| Vehicle Width | 1850 mm | 2040 mm |
| Vehicle Height | 1470 mm | 1880 mm |
| Wheelbase Size | 2960 mm | 3650 mm |
| Fuel Consumption | 9.1 L/100km | 11.8 L/100km |
| Fuel Consumption City | 13.8 L/100km | 14.7 L/100km |
| Fuel Consumption Overall | 11.8 L/100km | 13.1 L/100km |
| Fuel Tank Capacity | 64 L | 98 L |
