well its because people want suv's that are not huge like tahoes and blazers and they want them to basically be high sitting cars with a hatchback. People don't want sedans anymore. It's that simple. Sedans sit too low and don't have the cargo utility. And they don't want them to be dog slow either since they are a replacement for cars more so than a replacement for bigger trucks. they want and are getting carlike handling...and they want hot rod power.
since chevy sells all its equinox with v6 and ford probably 75 percent of its escape that way, vue maybe 50%. i'm guessing the outlander didn't bother with the 4 because no one wants a four. the suzukis are 6 cylinder. that's what the market wants. the caliber etc is a four popper but is smaller chassis, it was meant to replace the neon microcar. Toyota intends about 70% with a 4 cylinder but i bet that number changes to at least 50/50 when they see real demand and have satisified production engine v6 outputs for enough new CamLEES. i am sure the 6 cylinder will soon be at least 50% of toyotas. Look how mazda botched the Mazda6 launch, they made all four cylinders and no one wanted them. Now, most Mazda6's are 6 cylinder and they finally sell. Even Subaru wised up and the legacy outback gets a 6.
real fuel mileage in a vehicle as piggish as this will be about the same with a v6 vs. four anyways. the rav4's have nearly equal mpg between 4 and 6 cylinders. go look at all the owner testimonials on edmunds about the element and see all those weak 4 poppers getting MAYBE 21 22 mpg.
the press and cultists allow honda to be honda and that's great if the kool aid goes down good. but truth is, honda botched it by not offering a v6 here. Ha ha, even KIA gets it and the Tucson/Sportage has the v6. the bigger botch was the RDX, which is a four cylinder fat pig with bad mpg, that consumes more fuel than an escalade, Q7, navigator, QX56, and Mercedes GL class.