Forgive me, if this has already been addressed / answered prior.

Just looking for best spark plugs for (my wife's) 2010 CX-9.

Has just around 60K miles on it.

NGK's ?, etc.

In my perusing of Google, it does not seem there are any Youtube videos of this, there are for the CX-7, my guess is that's because it a 4 cyl and much easier.

Some say DIY and some say it's worth paying for mechanic to do it. Mazda dealer here in Sherman Oaks, CA, want $260, seems high

 

Wow, i was trying to answer then the stupid dumb *** ad right above my response area popped up and hogged the whole screen after i selected "copy" and wouldn't go away, there was no "x". I just accidentally hovered over it after copy, pasting and couldn't get rid of it. I did a re-load and had to do over this response again. F'n stupid ads that you can't get rid of! This happened on quick response, from now on i'm going advanced response!
I vote NGK. Iridium IX®. I currently have them in my Mazda 6 for 2 years. NGK Iridium IX® Spark Plugs

Search here: NGK Spark Plugs USA

 

We had our 2011 CX-9 serviced at the local Mazda dealer in town and when I picked it up the guy at the customer counter mentioned that they had to remove the whole fuel injection and manifold to access the spark plugs...

So I guess that is why the 75000 km service is a bit expensive... But then there are 75000 km until the next spark plug exchange :-)

So I would def. leave that job to a Mazda dealer, but that is me :-)

/Rikard

 

I recommend Denso Spark Plugs.

 

Stick with the factory NGK plugs. & Yes you need to remove the plastic intake manifold to access the coils & plugs.