Mercedes-Benz SL500 Spark Plug Replacement Cost.

The average cost for a Spark Plug Replacement is between $438 and $599. Labor costs are estimated between $246 and $311 while parts are priced between $192 and $288. Estimate does not include taxes and fees.
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Best Practices

To prevent ignition misfires and Check Engine Light problems, we recommend using only high-quality spark plugs, and preferably spark plugs from Mercedes-Benz.

Spark plugs have different ratings and it's important that the correct type are used.

Spark plug terminals wear down over time and can lead to engine misfires. At minimum, they need to be replaced at the mileage specified by Mercedes-Benz.

Common Symptoms

Failing spark plugs can cause the Mercedes-Benz SL500's engine to run rough and misfire, which can trigger the Check Engine Light. Continuing to drive under these conditions can damage the catalytic converter.

Most Common Mercedes-Benz SL500 Repairs

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