I bought NGK-94833 spark plugs from FCPEuro for my 2015 Jetta with the 1.8T.
I run NGK iridiums in my vehicles due to them being turbo/supercharged.
Stick with NGK for plugs, its the OE manufacturer, Bosch or Denso are good second choices. Never touch autolight or champion
Change spark plug to ngk iridium.
they certainly look to be different heat ranges. do yourself a favor and stop going to the dealer for spark plugs. the only different between the dealer spark plug and a big box store spark plug is that one does not come with the VW logo stamped on the side of it. they are otherwise the exact same plug. just go get yourself some new NGK's (all 4) and put yourself at ease.
I used NGK plugs in mine. A bit expensive, but they work great and I get 6 litres/100km for fuel mileage.
Denso and Bosch have worked well for us on a 1.6.
NGK (Mazda OEM) or Denso are my picks. Personally I think both brands are as good as each other. I buy whichever is cheaper that suits my car.
So, I changed spark plugs in an old Ford Focus 2001. And currently there's no way I can get the original Motocraft spark plugs, so I bought and installed the NGK ones which are supposedly compatible with my vehicle. I used them a week, but since the start I noticed great differences in size in the threads and in the shape of the head. Is this a problem?
Well, shit. I just put new plugs in two months ago following what EQT recommended then! I didn’t know of these failures with projected tipped plugs. Guess I should have spent a little more and bought non projected at the time, dammit.
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