2006 Cadillac STS vs. 2005 GMC Sierra
To start off, 2006 Cadillac STS is newer by 1 year(s). Which means there will be less support and parts availability for 2005 GMC Sierra. In addition, the cost of maintenance, including insurance, on 2005 GMC Sierra would be higher. At 5,965 cc (8 cylinders), 2005 GMC Sierra is equipped with a bigger engine. In terms of performance, 2006 Cadillac STS (321 HP) has 21 more horse power than 2005 GMC Sierra. (300 HP). In normal driving conditions, 2006 Cadillac STS should accelerate faster than 2005 GMC Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2005 GMC Sierra weights approximately 1056 kg more than 2006 Cadillac STS.
Because 2005 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 2006 Cadillac STS. In wet, icy, snow, or gravel driving conditions, 2005 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, 2005 GMC Sierra (488 Nm) has 61 more torque (in Nm) than 2006 Cadillac STS. (427 Nm). This means 2005 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2006 Cadillac STS.
Compare all specifications:
| 2006 Cadillac STS | 2005 GMC Sierra | |
| Make | Cadillac | GMC |
| Model | STS | Sierra |
| Year Released | 2006 | 2005 |
| Body Type | Sedan | Pickup |
| Engine Position | Front | Front |
| Engine Size | 4565 cc | 5965 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 321 HP | 300 HP |
| Torque | 427 Nm | 488 Nm |
| Engine Bore Size | 93 mm | 102 mm |
| Engine Stroke Size | 84 mm | 92 mm |
| Engine Compression Ratio | 10.5:1 | 9.4:1 |
| Drive Type | Rear | 4WD |
| Number of Seats | 5 seats | 6 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1818 kg | 2874 kg |
| Vehicle Length | 4990 mm | 6510 mm |
| Vehicle Width | 1850 mm | 2030 mm |
| Vehicle Height | 1470 mm | 1960 mm |
| Wheelbase Size | 2960 mm | 4250 mm |
| Fuel Tank Capacity | 66 L | 129 L |
