Question about 2001 Lexus Gs 430

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Improve mpg Cat has 40k miles on it and gas price is way high. what should i do? how i improve mpg using newer better muffler or engine tune-up?

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Not much. 1. Keep the tires inflated properly; that makes a big diff. 2. Don't carry anything you don't need...keep it light. 3. Use the lowest octane fuel that will work without the engine making noise(knocking or pinging). 4. Never use a roof rack! (Skis or bike, luggage etc) 5. Do your maintenance on time/keep the thing tuned. 6. Don't jackrabbit start. (making the tires go real fast from a stop) Get quickly to the speed you want and stay there. Changing speed uses more fuel. 7. Slow down. After about 55 MPH most vehicles start using relatively much more fuel. 8. Use the air conditioner and keep the windows closed. Newer car air conditioners are very efficient but old cars weren't so some old timers will tell you to not use the air but that's only for older models. 9. Don't leave the engine running when you're not moving. 10. Don't warm-up the engine in the morning to clear the ice. Use a scraper, drive slowly until the engine warms.(but make sure you can see)

Posted on May 15, 2008

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Check your air filter,tire pressure,minimize the amount of weight in the car,dont carry unnecessary objects,check your owner's manual for the recommended fuel and dont speed off from a light or stop sign,try to stay under 55 mph and mantain a certain speed.

Posted on Jun 13, 2009


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