My 2012 WRX has 16k miles. I just took it in for an oil change and the dealer pulled the cabin air filter and air intake filter. They showed them both to me and they both looked somewhat dirty but not horrible. The dealer recommended I replace them at a cost of $50 for the air intake filter and a whopping $70 for the cabin air filter. I declined because this sounded like an exorbitant price to say the least. $120 to replace a couple of air filters?
Furthermore the dealer told me they recommended that I replace the cabin air filter every 7500 miles, so with each oil change.
So my question is, what is a reasonable price for this service, and what are reasonable intervals to replace these items? I am definitely going to DIY the air intake filter as that is right up there with refilling windshield washer fluid. Is the cabin air filter another easy DIY replacement?