I am also doing 10k oil change - but I am a low mileage user - so its at least 8 months for 10k km. Also I recommend getting the transmission oil flushed and changed - costly but worth the investment - car becomes a different beasts.
AS for vibrations - yes could be hell to diagnose - look for an experienced Mechanic - that'll save you a lot of time and guess work.
So far (4 years) - have changed batteries, standard oil service, transmission flush, brake pads, 2 front arms, 2 pc bushings - tires too. Car has had software updated.