how can i improve the fuel economy omy 2003 lexus rx300. i've seen forums where owners "modify" the horsepower or reprogram shift points.

Asked by horseshoe601 Aug 13, 2012 at 01:22 AM about the 2003 Lexus RX 300 AWD

Question type: Maintenance & Repair

how can i improve the fuel economy on my 2003 lexus rx300.  I am getting 22 - 23 mph on non crowded flat
roadways.  Otherwise 16 - 17 mph.   i've seen forums where owners "modify" the horsepower or reprogram shift
points.  I have tires inflated to 32psi and use full synthentic oil and have frequent front end alignments.  I try to
drive with ecomony in mind.  Had all transmission fluid changed at 95000 miles.  Car runs like a dream
otherwise.  Any recommendations?

2 Answers
20

thinq4yourself answered 12 years ago

A tune-up, oil and gas treatment, fuel system check and flush, drive slower. I like to use Sea Foam and drive slower.

2 people found this helpful.
Mark helpful
90

Sherrie answered 7 years ago

Try putting a fuel attive in every other full tank gas or every full tank of gas will help engine and gas milage

2 people found this helpful.
Mark helpful

Your Answer:

Related Questions

Shortcuts

Search Lexus RX Questions

CarGurus Experts

  • #1
    tenspeed
    Reputation
    8,420
  • #2
    Papaobewon
    Reputation
    5,650
  • #3
    Nicolaos Vlachos
    Reputation
    5,180
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Toyota Highlander
31 Great Deals out of 612 listings starting at $6,950
Used Lexus GX
69 listings starting at $10,888
Used Acura MDX
20 Great Deals out of 758 listings starting at $2,495
Used Lexus ES
17 Great Deals out of 173 listings starting at $2,495
Used Toyota RAV4
135 Great Deals out of 2,768 listings starting at $3,500
Used Lexus IS
16 Great Deals out of 386 listings starting at $6,995
Used Toyota 4Runner
17 Great Deals out of 482 listings starting at $7,995
Used Honda CR-V
150 Great Deals out of 4,904 listings starting at $2,888
Used Lexus LX
39 listings starting at $32,601
Used Lexus LS
19 listings starting at $11,500
Used Toyota Camry
40 Great Deals out of 887 listings starting at $3,888

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.