2007 Hummer H3 vs. 2003 Mazda 3
To start off, 2007 Hummer H3 is newer by 4 year(s). Which means there will be less support and parts availability for 2003 Mazda 3. In addition, the cost of maintenance, including insurance, on 2003 Mazda 3 would be higher. At 3,699 cc (5 cylinders), 2007 Hummer H3 is equipped with a bigger engine. In terms of performance, 2007 Hummer H3 (242 HP @ 5600 RPM) has 82 more horse power than 2003 Mazda 3. (160 HP @ 6000 RPM). In normal driving conditions, 2007 Hummer H3 should accelerate faster than 2003 Mazda 3.
Because 2007 Hummer H3 is four wheel drive (4WD), it will have significant more traction and grip than 2003 Mazda 3. In wet, icy, snow, or gravel driving conditions, 2007 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, 2007 Hummer H3 (328 Nm @ 4600 RPM) has 133 more torque (in Nm) than 2003 Mazda 3. (195 Nm @ 4500 RPM). This means 2007 Hummer H3 will have an easier job in driving up hills or pulling heavy equipment than 2003 Mazda 3.
Compare all specifications:
| 2007 Hummer H3 | 2003 Mazda 3 | |
| Make | Hummer | Mazda |
| Model | H3 | 3 |
| Year Released | 2007 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 3699 cc | 1999 cc |
| Engine Cylinders | 5 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 242 HP | 160 HP |
| Engine RPM | 5600 RPM | 6000 RPM |
| Torque | 328 Nm | 195 Nm |
| Torque RPM | 4600 RPM | 4500 RPM |
| Engine Bore Size | 95.5 mm | 87.5 mm |
| Engine Stroke Size | 101.6 mm | 83.1 mm |
| Engine Compression Ratio | 10.0:1 | 11.0:1 |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 3 doors |
| Vehicle Length | 4750 mm | 4430 mm |
| Vehicle Width | 2180 mm | 1760 mm |
| Vehicle Height | 1900 mm | 1470 mm |
| Wheelbase Size | 2850 mm | 2850 mm |
