2009 Hummer H2 vs. 2003 Proton 400
To start off, 2009 Hummer H2 is newer by 6 year(s). Which means there will be less support and parts availability for 2003 Proton 400. In addition, the cost of maintenance, including insurance, on 2003 Proton 400 would be higher. At 6,199 cc (8 cylinders), 2009 Hummer H2 is equipped with a bigger engine. In terms of performance, 2009 Hummer H2 (393 HP @ 5700 RPM) has 319 more horse power than 2003 Proton 400. (74 HP @ 6000 RPM). In normal driving conditions, 2009 Hummer H2 should accelerate faster than 2003 Proton 400. With that said, vehicle weight also plays an important factor in acceleration. 2009 Hummer H2 weights approximately 1913 kg more than 2003 Proton 400. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Hummer H2 is four wheel drive (4WD), it will have significant more traction and grip than 2003 Proton 400. In wet, icy, snow, or gravel driving conditions, 2009 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, 2009 Hummer H2 (564 Nm @ 4300 RPM) has 456 more torque (in Nm) than 2003 Proton 400. (108 Nm @ 3000 RPM). This means 2009 Hummer H2 will have an easier job in driving up hills or pulling heavy equipment than 2003 Proton 400. 2009 Hummer H2 has automatic transmission and 2003 Proton 400 has manual transmission. 2003 Proton 400 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Hummer H2 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Hummer H2 | 2003 Proton 400 | |
| Make | Hummer | Proton |
| Model | H2 | 400 |
| Year Released | 2009 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 6199 cc | 1297 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 3 valves |
| Horse Power | 393 HP | 74 HP |
| Engine RPM | 5700 RPM | 6000 RPM |
| Torque | 564 Nm | 108 Nm |
| Torque RPM | 4300 RPM | 3000 RPM |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Manual |
| Vehicle Weight | 2903 kg | 990 kg |
| Vehicle Length | 4830 mm | 4280 mm |
| Vehicle Width | 2070 mm | 1700 mm |
| Vehicle Height | 2020 mm | 1390 mm |
| Wheelbase Size | 3130 mm | 2510 mm |
