2009 Cadillac STS vs. 2008 Hummer H3
To start off, 2009 Cadillac STS is newer by 1 year(s). Which means there will be less support and parts availability for 2008 Hummer H3. In addition, the cost of maintenance, including insurance, on 2008 Hummer H3 would be higher. At 5,328 cc (8 cylinders), 2008 Hummer H3 is equipped with a bigger engine. In terms of performance, 2009 Cadillac STS (320 HP @ 6400 RPM) has 20 more horse power than 2008 Hummer H3. (300 HP @ 5200 RPM). In normal driving conditions, 2009 Cadillac STS should accelerate faster than 2008 Hummer H3.
Because 2008 Hummer H3 is four wheel drive (4WD), it will have significant more traction and grip than 2009 Cadillac STS. In wet, icy, snow, or gravel driving conditions, 2008 Hummer H3 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, 2008 Hummer H3 (435 Nm @ 4000 RPM) has 8 more torque (in Nm) than 2009 Cadillac STS. (427 Nm @ 4400 RPM). This means 2008 Hummer H3 will have an easier job in driving up hills or pulling heavy equipment than 2009 Cadillac STS.
Compare all specifications:
| 2009 Cadillac STS | 2008 Hummer H3 | |
| Make | Cadillac | Hummer |
| Model | STS | H3 |
| Year Released | 2009 | 2008 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 4564 cc | 5328 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 320 HP | 300 HP |
| Engine RPM | 6400 RPM | 5200 RPM |
| Torque | 427 Nm | 435 Nm |
| Torque RPM | 4400 RPM | 4000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 5000 mm | 4750 mm |
| Vehicle Width | 1850 mm | 2180 mm |
| Vehicle Height | 1470 mm | 1860 mm |
| Wheelbase Size | 2960 mm | 2850 mm |
| Fuel Consumption | 9.8 L/100km | 14.7 L/100km |
| Fuel Consumption City | 15.7 L/100km | 18.1 L/100km |
| Fuel Consumption Overall | 13.1 L/100km | 16.8 L/100km |
| Fuel Tank Capacity | 64 L | 87 L |
