The big V6 is at home on interstates, loafing along at 1,800 rpm at cruising speed, yielding a 9.1 l/100 km on our way down to the Maine beaches and a 9.9 overall over 1,500 km. Plenty of passing power, but it's trashy at higher rpm's. At 310 hp, it offers 25 ponies more than the Honda Pilot's V6.
Is the Acadia fun to drive? Not really. You don't feel the mass of the 20" tires through the wheel, nor anything else for that matter. Suspensions do a great job at isolating from the road with no undue floatiness, although there's a bit of lateral wiggles at low speeds on bad pavement. To be honest, few competitors are really fun to drive in this category, but the Acadia is competent and not as floaty as the Ascent, and it felt more buttoned-down than my last Highlander.