2003 GMC Sierra vs. 2009 Hummer H2

To start off, 2009 Hummer H2 is newer by 6 year(s). Which means there will be less support and parts availability for 2003 GMC Sierra. In addition, the cost of maintenance, including insurance, on 2003 GMC Sierra would be higher. At 6,198 cc (8 cylinders), 2009 Hummer H2 is equipped with a bigger engine. In terms of performance, 2009 Hummer H2 (393 HP) has 118 more horse power than 2003 GMC Sierra. (275 HP) In normal driving conditions, 2009 Hummer H2 should accelerate faster than 2003 GMC Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2009 Hummer H2 weights approximately 958 kg more than 2003 GMC Sierra. 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 GMC Sierra. 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 (563 Nm) has 177 more torque (in Nm) than 2003 GMC Sierra. (386 Nm). This means 2009 Hummer H2 will have an easier job in driving up hills or pulling heavy equipment than 2003 GMC Sierra. 2009 Hummer H2 has automatic transmission and 2003 GMC Sierra has manual transmission. 2003 GMC Sierra 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: