As I move through the general maintenance items on the Mazda 3, the air filter was one of the fastest and easiest jobs that I have done on any vehicle. For this job there were no tools needed as it was a simple retainer clip that held the air filter box together. All in the cost was $26 Canadian. When compared to the dealer installation price of about $75, the 5 minutes required for this DIY project becomes well worth the savings.
Cheers