2009 Hummer H3 vs. 2002 Pontiac Grand Am
To start off, 2009 Hummer H3 is newer by 7 year(s). Which means there will be less support and parts availability for 2002 Pontiac Grand Am. In addition, the cost of maintenance, including insurance, on 2002 Pontiac Grand Am would be higher. At 3,653 cc (5 cylinders), 2009 Hummer H3 is equipped with a bigger engine. In terms of performance, 2009 Hummer H3 (239 HP @ 5800 RPM) has 64 more horse power than 2002 Pontiac Grand Am. (175 HP @ 4800 RPM). In normal driving conditions, 2009 Hummer H3 should accelerate faster than 2002 Pontiac Grand Am. With that said, vehicle weight also plays an important factor in acceleration. 2009 Hummer H3 weights approximately 788 kg more than 2002 Pontiac Grand Am. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Hummer H3 is four wheel drive (4WD), it will have significant more traction and grip than 2002 Pontiac Grand Am. In wet, icy, snow, or gravel driving conditions, 2009 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, 2009 Hummer H3 (327 Nm @ 4600 RPM) has 42 more torque (in Nm) than 2002 Pontiac Grand Am. (285 Nm @ 4000 RPM). This means 2009 Hummer H3 will have an easier job in driving up hills or pulling heavy equipment than 2002 Pontiac Grand Am. 2002 Pontiac Grand Am has automatic transmission and 2009 Hummer H3 has manual transmission. 2009 Hummer H3 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2002 Pontiac Grand Am will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Hummer H3 | 2002 Pontiac Grand Am | |
| Make | Hummer | Pontiac |
| Model | H3 | Grand Am |
| Year Released | 2009 | 2002 |
| Engine Position | Front | Front |
| Engine Size | 3653 cc | 3349 cc |
| Engine Cylinders | 5 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 239 HP | 175 HP |
| Engine RPM | 5800 RPM | 4800 RPM |
| Torque | 327 Nm | 285 Nm |
| Torque RPM | 4600 RPM | 4000 RPM |
| Engine Bore Size | 95.5 mm | 92 mm |
| Engine Stroke Size | 102 mm | 84 mm |
| Engine Compression Ratio | 10.5:1 | 9.5:1 |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 2202 kg | 1414 kg |
| Vehicle Length | 4770 mm | 4740 mm |
| Vehicle Width | 2170 mm | 1790 mm |
| Vehicle Height | 1870 mm | 1410 mm |
| Wheelbase Size | 2850 mm | 2730 mm |
| Fuel Tank Capacity | 87 L | 54 L |
