2005 Cadillac STS vs. 2006 Hummer H2
To start off, 2006 Hummer H2 is newer by 1 year(s). Which means there will be less support and parts availability for 2005 Cadillac STS. In addition, the cost of maintenance, including insurance, on 2005 Cadillac STS would be higher. At 5,965 cc (8 cylinders), 2006 Hummer H2 is equipped with a bigger engine. In terms of performance, 2006 Hummer H2 (326 HP @ 5200 RPM) has 71 more horse power than 2005 Cadillac STS. (255 HP @ 6500 RPM) In normal driving conditions, 2006 Hummer H2 should accelerate faster than 2005 Cadillac STS. With that said, vehicle weight also plays an important factor in acceleration. 2006 Hummer H2 weights approximately 1107 kg more than 2005 Cadillac STS. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 Hummer H2 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Cadillac STS. In wet, icy, snow, or gravel driving conditions, 2006 Hummer H2 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, 2006 Hummer H2 (495 Nm @ 4000 RPM) has 156 more torque (in Nm) than 2005 Cadillac STS. (339 Nm @ 3200 RPM). This means 2006 Hummer H2 will have an easier job in driving up hills or pulling heavy equipment than 2005 Cadillac STS.
Compare all specifications:
| 2005 Cadillac STS | 2006 Hummer H2 | |
| Make | Cadillac | Hummer |
| Model | STS | H2 |
| Year Released | 2005 | 2006 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 3556 cc | 5965 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 255 HP | 326 HP |
| Engine RPM | 6500 RPM | 5200 RPM |
| Torque | 339 Nm | 495 Nm |
| Torque RPM | 3200 RPM | 4000 RPM |
| Engine Bore Size | 94 mm | 101.6 mm |
| Engine Stroke Size | 86 mm | 91.9 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1796 kg | 2903 kg |
| Vehicle Length | 4990 mm | 4830 mm |
| Vehicle Width | 1850 mm | 2070 mm |
| Vehicle Height | 1470 mm | 2020 mm |
| Wheelbase Size | 2890 mm | 3130 mm |
| Fuel Tank Capacity | 64 L | 121 L |
