E63s Spark Plug Change




I had mine changed out at 60,000km at the dealer. The OEM plugs are simply NGK brand.




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thanks for the help.
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From my first change at 60,000km, I asked for the old ones back and they all showed signs of wear but not to the point of excessive wear which can impede performance. In the end, it is likely up to the individuals.


its not a DIY. On the left engine bank(driver side) the mechanic had to remove the intercooler reservoir (aux reservoir) just pulled it and popped up. and removed its bracket underneath, then had to unscrew the bolts for the high pressure fuel pump then moved the rails and get access to the ignition coils. Its a tight space,
the left engine bank (pax side) had to unplug the ECU cables and unscrew the bolts holding it, moved it out of the way and then tried to get to the ignition coils.
here in the UAE the labour costed me 41$. with engine oil changed as well. . lol.
obviously the dealer would've charged me way more than that.
the car ran much more smoother and a noticeable difference in performance.
DI cars are hard on plugs. Do it every 60 at the latest. Jurys out on how much indexing matters, but any MB specialist will do it and have their own way of doing it.
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Chris Tran, Retired Alpha European Autotech Owner
Amsoil Independent Dealer #7236674
Hopefully some more info surfaces as the 50-60k mile marker becomes more common here.


Hopefully some more info surfaces as the 50-60k mile marker becomes more common here.



