gas mileage is always a lie. Somehow they come up with those stupid number driving 70 kmh in 8th gear on a brand new paved road with a slight decline and a tailwind. I own a 2012 hyundai elantra and it never lived up to its fuel economy claims so they pay me the difference every year. Last year they gave me $94.
Your engine is v6 as Bill said. It is found in almost every vehicle Chrysler sells from the avenger, to the challenger, charger, grand cherokee, wrangler, minivan etc.
Nice vehicle