I drive 120 miles per day R/T from Long Island to New Jersey. About 45 miles is on highways with traffic with about half during high traffic rush hour. Average speed about 40 mph. Gas mileage typically 22-23 mpg. On longer, non traffic trips 26 mpg. Never got less than 19 mpg. Car has 12,000 miles... no defects or repairs. Very comfortable, all the power you need, handles well, nothing to really complain about.
Interior comforts are great. Handsfree entry and locking, NAV system is awesome, sound system outstanding. Looks and handles great. Stiffer than a Lexus and no annoying Infinity engine noise. Closest feel is an Audi but without the 6 speed Audi constant shifting... try that in traffic before buying.
Nav traffic is a great feature if it was actually live. Seems delayed by at least a half hour. Needs more road sensors. Should lock when you walk away with key automatically.