Width of a car influences on room in the cabin as well as stability while driving. The Audi is widther by 5 % in comparison to the Hummer H3 and is not really important. The average for the „large SUV” class is 1,866 millimeters and is by 117 mm larger than the same feature of the Audi Q7 SUV.
Audi Q7 SUV has 168 millimeters longer wheelbase in comparison to the Hummer H3. A longer wheelbase gives more stable and comfortable ride, especially at higher speeds. It also gives more storage space. But, vehicles having a longer wheelbase are not as maneuverable as those with a shorter wheelbase.
The Audi Q7 SUV is 7 % longer when compared to the Hummer H3. The length of the car plays a role in terms of driving comfort and space in the trunk. The Audi Q7 SUV 3.6 FSI 280HP automatic 4x4 very likely will be offering to it's users more room for legs. Aditionally the Audi will be better driven ,however, the Hummer H3 will be a little easier to park due to shorter length .
Automatic transmission in the Audi Q7 SUV in spite of having a few disadvantages gives much more better comfort of driving. After a long ride especially in the city you probably would be less exhausted. Moreover automatic puts less strain on the engine thanks to the factory settings of shifts in specific revs range.