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.
Just did mine at 69k. Felt like a small pickup in performance.
Bought a used 2014 CX5 with like 250km on it. Changed the spark plugs the second I bought it. Now THOSE were due.
I’ve had my cx5 since August of 23. Put 48k on it since owning it, bought used at 44k it’s been a dream come true. cx5 just takes regular maintenance like oil changes spark plugs and brakes..and another plus it’s a very sharp looking vehicle inside an out.
Spark plugs, coolant exchange, transmission drain/fill, brake fluid flush, and air filter replacement, stat.
My RX8 also got pretty piss poor compression numbers. The only time it struggled with a start up was with literally the original 20 years old plugs it came with and I had to do multiple hot starts. It still started and carried on.
At around 120,000 KM plan for spark plugs. It's easy, especially if you get a 1/4" torque wrench and 14mm 1/4 deep well socket.
That price at 63.5k miles isn't bad imo. I spent roughly that same amount for my 2017 back in 2019 with around 40k miles (64k km). What's the service history look like? Have spark plugs been replaced, belts checked, engine oil changed at least 10-12 times by now? How are the pads and rotors?
Customer had misfires, bought oem spark plugs and coil pack. Customer came back couple months later, misfire came back. Found that port injector was bad.
A regional tire store / repair center "recommend" spark plugs on my Sienna at 92K for $850 (intake manifold has to come off to get at 3 of the plugs). I asked them what benefit would there be in replacing spark plugs at 92K considering Toyota sets the spark plug replacement at 120K.
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If choosing spark plug across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.
We compare spark plug across these categories:
In March 2026 on PartReview, spark plug OEM Mazda were overall better than OEM Toyota.
In March 2026 on PartReview, spark plug OEM Toyota were overall more popular than OEM Mazda.
By vote balance, spark plug OEM Toyota surpassed OEM Mazda:
By number of reviews, spark plug OEM Toyota surpassed OEM Mazda:
In March 2026, according to PartReview, spark plug OEM Toyota led more car-specific ratings than OEM Mazda:
OEM Toyota are chosen by owners of cars such as: Toyota Corolla, Toyota Camry, and others.
Spark plug OEM Mazda have not yet taken leading positions in car-specific ratings. You can help by adding a review and specifying your car.
If this comparison didn’t fully answer your question, there are many others on PartReview.
For example, comparisons of spark plug OEM Toyota with: NGK, Bosch, Denso, Autolite, Champion, AC DELCO, BRISK, OEM Volkswagen, Motorcraft, OEM FORD.
Also available: comparisons of spark plug OEM Mazda with: NGK, Bosch, Denso, Autolite, Champion, AC DELCO, BRISK, OEM Volkswagen, Motorcraft, OEM FORD.
You can also see who is better among other spark plug manufacturers: Bosch or NGK, NGK or Denso, NGK or Autolite, NGK or Champion, NGK or AC DELCO.
