My 2015 mazda 3 is at 29000, I would check the cabin filter, your intake filter, if you have a short ram intake, I recommend cleaning it once before every other season.
If the oil changes have been on a good sched, you should be OK.
If you live in a cold place where they put salt on the roads for snow, I would wash the underguards.
the car dealer will most likely highly recommend certain services. See if you have coupons you can use from your email or catalogs they send.
Good Luck!