Subtle difference, but still there. On my car's screen, it read 27.7 mpg, before the plugs install. I've had them on for a week already, now reads, 28.0. The car runs smoother, and quiter.
Verified purchase: Yes | Condition: New
Awesome! Car runs amazing. I feel a lot better throttle response and these are the top of the line spark plugs. RUTHENIUM HX I highly recommend. Worth every penny
Verified purchase: Yes | Condition: New
MAZDA 2014 CX5 , used with new Ignition Coils and she purrs like a Baby Kitten.....zoom zoom zooommm!!!!!!! Gap was correct right out the boxes.!!!!!
Verified purchase: Yes | Condition: New
great plugs for the skyactiv 2.5, car runs smoother and seems peppier.
Verified purchase: Yes | Condition: New
Great
Verified purchase: Yes | Condition: New
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