vs
Spark plug Autolite or Motorcraft
Reviews
You're on the right track- replace those worn out plugs. Pre-detonation started on my '18 at 30k. Increasing octane rating to 93 worked up to 58k miles. $50 for a new set of [Autolite Iridium XP5363](https://www.amazon.com/dp/B078KWTCF2?ref=ppx_pop_mob_ap_share) resolved this problem.
Pros: resolved pre-detonation problem
Vehicle:
Ford
Mileage: 30000 km
Part number: XP5363
I've ran Autolites on my racecar that runs in the 7's for 20+ years with no problem. They are the only thing I trust at the moment
Pros: trustworthy, no problems
I used them in my 2007 Tacoma with no problems. Left them in for several years.
Pros: no problems
Vehicle:
Toyota
I put autolite's in my 2010 V6 and they've been perfectly fine.
Pros: perfectly fine
Vehicle:
Ford
I just installed a set of Iridium XP 6203 in my Optima 2015 and they're working fine. Gap was incorrect on 2 of them, but was easy to fix.
Pros: working fine
Cons: gap was incorrect
Vehicle:
Kia Optima
Part number: XP 6203
Iridium plugs suck on fords.
Cons: suck on fords
Vehicle:
Ford
autolites are some of the worst spark plugs, grab some NGK iridium’s and it should be fine
Cons: worst spark plugs
I have a 2019 GTI with 65k km. I decided to do plugs and when I saw how expensive OEM were, I said screw that, i'm going to try the iridium auto value basic ones. I thought the difference in quality would be negligible. I ran the Autolite XP5325 plugs without gapping. All seemed fine but then when pulling on to highway under load at 3k + RPM, misfiring like crazy.
Cons: misfiring under load
Vehicle:
Volkswagen
Mileage: 65000 km
Part number: XP5325
it was the Autolite spark plugs. Had car towed to my mechanic. They replaced with spec NGK and the car is running fine.
Pros: car is running fine
Cons: car misfires
Vehicle:
Mazda
I bought Autolite spark plugs but after researching I should of bought NGK. Right after replacing them when I accelerate my car jerks or misfires when driving. When at an idle I felt my car jerking.
Cons: car jerks or misfires
Vehicle:
Nissan Altima
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