2007 Cadillac STS vs. 2005 GMC Sierra
To start off, 2007 Cadillac STS is newer by 2 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, 2007 Cadillac STS (322 HP) has 22 more horse power than 2005 GMC Sierra. (300 HP). In normal driving conditions, 2007 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 1013 kg more than 2007 Cadillac STS.
Because 2007 Cadillac STS is four wheel drive (4WD), it will have significant more traction and grip than 2005 GMC Sierra. In wet, icy, snow, or gravel driving conditions, 2007 Cadillac STS 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 2007 Cadillac STS. (427 Nm). This means 2005 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2007 Cadillac STS. 2007 Cadillac STS has automatic transmission and 2005 GMC Sierra has manual transmission. 2005 GMC Sierra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Cadillac STS will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 Cadillac STS | 2005 GMC Sierra | |
| Make | Cadillac | GMC |
| Model | STS | Sierra |
| Year Released | 2007 | 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 | 322 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 | 4WD | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 6 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1820 kg | 2833 kg |
| Vehicle Length | 4990 mm | 6510 mm |
| Vehicle Width | 1850 mm | 2450 mm |
| Vehicle Height | 1470 mm | 1970 mm |
| Wheelbase Size | 2960 mm | 4250 mm |
| Fuel Tank Capacity | 66 L | 132 L |
