2007 Cadillac STS vs. 2007 GMC Sierra
To start off, both 2007 Cadillac STS and 2007 GMC Sierra were released in the same year (2007). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 5,357 cc (8 cylinders), 2007 GMC Sierra is equipped with a bigger engine. In terms of performance, 2007 Cadillac STS (320 HP @ 6400 RPM) has 5 more horse power than 2007 GMC Sierra. (315 HP @ 5200 RPM). In normal driving conditions, 2007 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 797 kg more than 2007 Cadillac STS.
Because 2007 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 2007 Cadillac STS. In wet, icy, snow, or gravel driving conditions, 2007 GMC Sierra 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 GMC Sierra (458 Nm @ 4400 RPM) has 31 more torque (in Nm) than 2007 Cadillac STS. (427 Nm @ 4400 RPM). This means 2007 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2007 Cadillac STS.
Compare all specifications:
| 2007 Cadillac STS | 2007 GMC Sierra | |
| Make | Cadillac | GMC |
| Model | STS | Sierra |
| Year Released | 2007 | 2007 |
| Body Type | Sedan | Pickup |
| Engine Position | Front | Front |
| Engine Size | 4565 cc | 5357 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 320 HP | 315 HP |
| Engine RPM | 6400 RPM | 5200 RPM |
| Torque | 427 Nm | 458 Nm |
| Torque RPM | 4400 RPM | 4400 RPM |
| Engine Bore Size | 93 mm | 96 mm |
| Engine Stroke Size | 84 mm | 92 mm |
| Engine Compression Ratio | 10.5:1 | 9.4:1 |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 6 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1638 kg | 2435 kg |
| Vehicle Length | 4990 mm | 6320 mm |
| Vehicle Width | 1850 mm | 2040 mm |
| Vehicle Height | 1470 mm | 1880 mm |
| Wheelbase Size | 2960 mm | 4010 mm |
| Fuel Consumption | 8.7 L/100km | 10.7 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 | 129 L |
