2005 Camry 2.4L just changed original plugs at 130k miles. I go 5k on synthetic oil and don't have to add any between oil changes.
I run more or less the same motor (2.1liter-276 Schrick-10.5CR), and I'm using stock Bosch spark plugs.
My 2015 outback has 140k miles. I just did spark plugs and belt, brakes. That's the only maintenance I've ever done other than tires and batteries.
Just did mine at 69k. Felt like a small pickup in performance.
Denso 3457 (FXE24HR11)
Why? It's the plug recommended in the owner's manual and I have never seen anyone have issues with this plug.
Why are they noticeably better than other equivalent plugs from reputable brands, I honestly don't know as it seems that the differences should be negligible. Plugs are one of the areas where the car is very fussy.
Bought a used 2014 CX5 with like 250km on it. Changed the spark plugs the second I bought it. Now THOSE were due.
In a pinch I use champions.
This particular car, like a number of vehicles with V6 engines, requires that the intake manifold be removed in order to access one bank of cylinders to replace the spark plugs. This is why it costs so much to do the work.
Unfortunately the new plugs and coils made no difference I’m still experiencing the same startup issue and it seems like the new coils and plugs may have made it act worse.
Post inspection they mentioned that the spark plugs have gone faulty and was firing properly. They installed the new spark plugs.\n\nThe issue here is, I have driven cars for 10-15k without changing spark plugs and this is a new car from showroom which had bad spark plugs, also looks rusted, which was unexpected.
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