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Spark plugs after 12k

My last MB was on on a service plan for the entire duration that I owned it. So changing the spark plugs at 4 years and regardless of mileage was a no-brainer.

I also have two Suzuki cars, and paid the dealers to have the spark plugs replaced at the due intervals. Not convinced it was necessarily, but for what it costs, I thought I'd have it done.

Not criticising anyone who does not care about FSH and leaves the spark plugs in the head for longer than the manufacturer recommends. It's your car.
 
Mine are at (only) 3 years, so I'd be within what most have inferred would be "tolerance", if.....

Not sure what the cost is to be fair
 
Mine are at (only) 3 years, so I'd be within what most have inferred would be "tolerance", if.....

Not sure what the cost is to be fair
I wouldn’t over think it buddy , another year or two will make absolutely no difference :)
 

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