I've got a 2017 330i with about 75k km on it, and the manual says spark plugs every 60k, but I've heard our heat and dust might mean doing them sooner. The car still feels fine, no misfires, but fuel economy has dropped a bit. I'm trying to find a shop that does Spark Plugs Replacement BMW Dubai and can tell me if the old ones actually look worn or if I'm just wasting money. Do the electrodes wear out faster here because of the heat? Also, should I replace the ignition coils at the same time or only if there's a problem? I don't want to skip something important and end up with a rough idle later. Anyone with a B48 engine have experience on this? Would love to know the real interval before I book it in.