[Little Pig]

TRiton engines, per the reviews I have read, and the experiences I have heard, need to be revved up pretty high to get decent performance from them. If you are travelling slow, particularly off-road, or in town, the trucks tend to feel underpowered.

[Alberta's Child]

Because of the way I drive, I'm not overly concerned about an "under-powered" truck. I generally don't haul heavy loads (I usually carry the kind of equipment that maxes out the volume without getting anywhere close to the maximum payload weight), don't tow a trailer, and don't do serious off-roading at all.

My Explorer is definitely under-powered with the 4.0-liter V-6 (it's most apparent when accelerating on highway entrance ramps), but as long as this doesn't result in excessive wear and tear it's really not a big problem.