Holy ****, I think I gained another 10 pounds of torque. The spark plugs looked like they were never changed. One spark plug even looked like it attacked by a drill press. (not really) But it had metal shavings pealing off it. Anyway, my car runs better than it ever has before.
I drive an N/A GXL btw.

 

Rotary engines EAT spark plugs LOL. I think the FSM tells you to change 'em every 30,000 miles, I do mine every 10,000 to 15,000 now, there's a good bit of "wear" on 'em even at that point (think the "spirited" driving we so enjoy has something to do with that?)

 

I do mine every other oil change.
I use the cheap NGK ones, 5 bucks a pop. Its better to get cheaper ones and replace them more frequently, rather then getting HKS ones that are like 30 bucks a pop and not being able to afford replacing them ever.

 

I bought mine off of mazdatrix for 9 dollars a plug. The mazda dealership wanted 12 dollars a plug. I was really not enjoying the money spending. Know any place online I get order them for 5 bucks a pop?

 

Kragen sells em for $5 each.

 

mine average $7 at the local auto parts place...If you're worried about how much parts are, you're driving the wrong car! LOL...Just learned today Mazda wants $362 for a damn boost/ pressure sensor!

 

mine are $5 NGK's from autozone, they work great. but everyone is right , they do eat them. every other oil change i put new ones in

 

They eat plugs. Just keep an eye on them, maybe clean them a little every now and then.