If you're looking at getting a Commander, but just drive it like any other car, well a 2WD V-6 would fit the bill just fine.
I'm perfectly happy with my 2010 Commander Sport V6 w/ QT1 4WD. Mostly daily commute for the wife, or long trips for the family. Drive in the snow and bad weather, occassional mild off-roading, nothing to serious or mud covering. (the QT1 4WD pays off there).
Towing, get the V8.
Serous Off-Roading, Get QTII or QDII 4WD system, which means a V8, they only made a couple V6 w/ QTII.
The vehicle is too big, heavy, brick like aerodynamics with big wheels and gearing to get good mileage. Even the V6 will be in the 16/20 mpg city/hi-way mileage. The V8 are worse, but only by a couple of mpg. You cruise on the hi-way at 75mph or more, with these Aerodynamics, you'll never get better than 16 or 18 mpg.
Its wrong to say the V6 is underpowered, it has "adequate" get up and go for driving on the street and highway, but yes, you will NOT win any drag races. If you want to tow or do anything requiring lots of power, you need the V8.
I test drove a 2007 Hemi, although it did have lots of power, it wasn't going to beat any sports cars either, the vehicle is just too heavy for that. Its a Commander, your looking at the wrong vehicle if you want to accellerate like a sports car. I guess it comes down to personal preference, from what you told us, I don't think you'll be disappointed with the V6, but if your one that has to have more power, then it has to be one of the V8's.
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