Have you changed the spark plugs after driving more than 40,000 kilometers?

Hey guys, at how many kilometers did you change your spark plugs? 😎

When driving a Toyota Vellfire at speeds above 100 km/h, if you release the accelerator, the car tends to jerk repeatedly. Even after changing the engine oil and spark plugs, this issue persists.

The 2022 Haval H9 is approaching 40,000 kilometers, and I'm not sure how much longer the original spark plugs will last. Fellow car enthusiasts, at how many kilometers did you change your spark plugs? What condition were the spark plugs when you replaced them? Thanks! ***** Also, I've clearly stated it's the Haval H9 and posted this in the Haval H9 section. Please make sure it stays within the Haval H9 circle and not other H9 circles. It's really tiring, you're quite something! *****

I've driven nearly 40,000 kilometers and I'm thinking about changing the spark plugs. Which model should I choose between Bosch and NGK? I saw a Bosch double platinum spark plug online. Is it necessary for this car to use double platinum?

Is it necessary to change the transmission oil at 40,000 kilometers?

The original spark plug failed after just over 10,000 kilometers. How about you guys?

Car enthusiasts, which brand of spark plugs do you recommend? Is everyone using Mitsubishi NGK single iridium spark plugs?

How often should the spark plugs in the 2019 GS5 be replaced? It's approaching 70,000 kilometers and hasn't been changed yet.

I'm thinking about changing my spark plugs recently. What brands do you guys use?

Yesterday, I went for maintenance and replaced the spark plug assembly. I want to ask, after a year and having driven 20,000 kilometers, is it necessary to replace it?