I would stick with OEM or do the HKS M40's which are a stock equivalent.My ES mileage is 65000 km and would like to change the spark plugs too after switched from 5w30 to 5w40.
I have asked NGK but they didn't made for 2018 Hyundai ES. No need for high performance like HKS. So which brand should be better other than OEM?
Would I be correct if it is these ones ???@Petabytes
Watch this video...
The NGK plugs have been performing great and lots cheaper than the HKS plugs.