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Poor Gas Mileage


lexus ls430

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  • 2 weeks later...
i have 2 lexus rx300s.One of them gives 18 hwy and the other 13.9hwy.

The first rx has 24,000mi and the other 8500 mi . the second one has been in a bad accident but has been repaired.What is the cause of the poor gas mileage?

The front end damage may have effected the Mass Airflow Sensor. This might make the air/fuel mixture rich? Have your dealer (or favorite Lexus mechanic) look at it. They can run electronic tests and determine if the fuel mixture is too rich.

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