Mercedes-Benz builds sophisticated engines that demand quality components throughout their service life. Spark plugs are no exception — here's what works in common Mercedes engines.
C-Class, E-Class, and GLC (2.0L Turbocharged)
Mercedes's M264 and M260 2.0L turbocharged 4-cylinder engines use NGK LZKAR6AP11 iridium plugs as OEM specification. These are Mercedes's current workhorse engines across the lineup.
GLE and S-Class (3.0L Inline-6 EQ Boost)
The inline-6 with mild-hybrid (EQ Boost) technology uses NGK iridium plugs spec'd to the engine's specific requirements. Premium plugs are essential for these sophisticated powertrains.
AMG Engines
AMG-modified engines run at elevated power levels and should use OEM-spec NGK iridium plugs. The heat range specifications for AMG engines are different from standard Mercedes applications — don't substitute standard-grade plugs.
Getting the Right Part Number
Mercedes engines are specific about plug fitment. Always verify by your vehicle's year, model, and engine designation (M264, M256, etc.) rather than just the displacement.
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