Spark plugs may wear out on Dodge Durango due to high mileage and cause poor engine performance and engine misfire.
Old spark plugs can cause the engine to turn on the check engine light or cause the CEL to flash.
Why change the spark plugs?
It is important to change the spark plugs on your Dodge Durango at the recommended 100,000-mile mark to avoid engine problems.
Old spark plugs may cause poor fuel economy as well. Engine misfire is one common sign of old spark plugs.
It costs between $280-$500 to replace the spark plugs on a 2011-2017 Dodge Durango. It is more expensive than most cars because the intake plenum which sits on top of the engine needs to be replaced.
This requires one to two hours of extra work, and that's why shops are going to charge you more to replace the spark plugs on a 3.6 Dodge Durango with the Pentastar engine.
Based on the owner's manual, the spark plugs on the 3.6l V6 Pentastar engine should be changed every 100,000 miles.
Only use platinum or iridium spark plugs. If you decide to install copper spark plugs, they need to be replaced every 30,000 miles.