lexus ls430 Posted March 15, 2005 Share Posted March 15, 2005 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? Quote Link to comment Share on other sites More sharing options...
melhadri Posted March 15, 2005 Share Posted March 15, 2005 What was repaired subsequent to your accident? Quote Link to comment Share on other sites More sharing options...
lexus ls430 Posted March 15, 2005 Author Share Posted March 15, 2005 The bumper,headlights,front fenders,etc mainly.The hood was ok Quote Link to comment Share on other sites More sharing options...
Jeffchs32 Posted March 15, 2005 Share Posted March 15, 2005 Personally i know it depends on how hard or easy i drive mine....right now i have gotten 20.8 mpg to a whole tank, drivin it relatively easy. That is city and interstate driving together. Quote Link to comment Share on other sites More sharing options...
lexdog Posted March 17, 2005 Share Posted March 17, 2005 I drive mine pretty hard, rabbit starts and 80 to 90 mhp hwy I get 20.9 Quote Link to comment Share on other sites More sharing options...
lexus ls430 Posted March 25, 2005 Author Share Posted March 25, 2005 my other rx gets 18hwy which changed to 19.9mpg Quote Link to comment Share on other sites More sharing options...
SKperformance Posted March 25, 2005 Share Posted March 25, 2005 what octane are you using and what tire pressures? Quote Link to comment Share on other sites More sharing options...
brian_k03 Posted March 30, 2005 Share Posted March 30, 2005 octane? last spark plug change? driving habits? Quote Link to comment Share on other sites More sharing options...
Booyah Posted March 30, 2005 Share Posted March 30, 2005 Hmm---poor gas mileage, JOIN the RX crowd! It just dont bother me anymore. Drive it like I stole it----oh wait Quote Link to comment Share on other sites More sharing options...
kherfurt Posted April 6, 2005 Share Posted April 6, 2005 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. Quote Link to comment Share on other sites More sharing options...
brandondiem Posted April 6, 2005 Share Posted April 6, 2005 I too have been hovering around the low 18mpg range. I use regular gas and have added a K&N air filter with a Tonado air adapter with no remarkable efficiency. Quote Link to comment Share on other sites More sharing options...
SKperformance Posted April 7, 2005 Share Posted April 7, 2005 Get a motorvac and stop using basic gas Quote Link to comment Share on other sites More sharing options...
lexus ls430 Posted April 8, 2005 Author Share Posted April 8, 2005 He did the test and told me i should be getting about 30mpg? Quote Link to comment Share on other sites More sharing options...
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