Gas mileage has dropped drasticaly

Asked by Mar 02, 2013 at 12:47 PM about the Honda CR-V

Question type: Maintenance & Repair

I bought the car new and for years have gotten 24-26 mpg. Almost overnight the mileage has dropped to 20mpg or less. The car has 160K miles on it but runs like a champ and rather than buy new I would rather keep it if I can get my mileage back. Within the past 3 months I have had a complete tune up, new tires, new air filter, and fresh oil change. The maintenance light is on and the shop told me it has a vapor leak, but 2 trips back and they can't find the leak. Could this be the source of my problem? What have I missed? Help!

8 Answers

I'm going to go ahead and blame your EGR valve, opening up when it's not the right time, possibly the sensor that makes this happen, MAF MAP etc...your trouble codes would tell you what is, if you bothered to read them.

2 of 2 people found this helpful.

the leak is an internal vacuum leak, causing things to malfunction.

2 of 2 people found this helpful.

you know if you filled up to the cap, the emissions system would have a gasoline bound canister and would take time to recover and create errors...your evarporative emissions would be buggerd for a while throwing up the CEL until it was put right. Supposed to have ALL emissions sewed-up proper, if there is a leak in which some vapor can escape, it goes into B9 control robot throwing it's claws in the air and says "warning warning". I think what we are dealing with here is one confused polution control system. Take it to the smog guy who will uncover/discover these malfuncioning emissions controls-

1 of 1 people found this helpful.
4,615

what year? maintenance light and check engine light are different things...if its the maintenance light then someone forgot to reset it...if it is a check engine light you could take it to autozone and have them scan for any codes for free. also what was included in the complete tune up?

1 of 1 people found this helpful.
71,035

The shop may be talking about the EVAP system. This emission control system recycles gasoline vapors back to the engine to be burned up rather than be released into the air (required federally since 1971, since 1970 in California). If this system malfunctions it will effect gas mileage and turn on your check engine light. I'd change the thermostat. If it's stuck open your engine won't reach operating temperature. This will also greatly affect gas mileage. HTH. -Jim

1 of 1 people found this helpful.
75

Have 2007 CR-V EX, and was getting 27-30 MPG, until I had tires replaced, MPG fell overnight to 20- 25. Complained to tire store, they said new tires, thicker tread will cause lower MPG. Still not happy with answer, 6 months later.

7 of 7 people found this helpful.
4,615

what kind of tires?

3 of 3 people found this helpful.

Most likely heavier or oversize tires with aggressive thread will lower MPG

Your Answer

CR-V

Looking for a Used CR-V in your area?

CarGurus has 57,950 nationwide CR-V listings starting at $1,850.

ZIP:

Honda CR-V Experts

  • #1
    Tom Demyan
    Reputation
    3,900
  • #2
    saman2812
    Reputation
    1,860
  • #3
    PEng
    Reputation
    1,830
View All

Related Models For Sale

Used Toyota RAV4
731 Great Deals out of 47,064 listings starting at $1,195
Used Honda Accord
1,016 Great Deals out of 60,155 listings starting at $1,099
Used Honda Pilot
516 Great Deals out of 36,594 listings starting at $500
Used Honda Civic
788 Great Deals out of 70,034 listings starting at $1,500
Used Nissan Rogue
627 Great Deals out of 69,884 listings starting at $2,499
Used Toyota Highlander
472 Great Deals out of 31,574 listings starting at $2,500
Used Ford Escape
1,047 Great Deals out of 95,771 listings starting at $1,200
Used Toyota Camry
941 Great Deals out of 82,535 listings starting at $999
Used Subaru Forester
392 Great Deals out of 36,390 listings starting at $750
Used Honda HR-V
37 Great Deals out of 14,602 listings starting at $13,500
Used Mazda CX-5
200 Great Deals out of 29,457 listings starting at $7,777
Used Nissan Murano
363 Great Deals out of 25,462 listings starting at $1,895
Used Toyota 4Runner
274 Great Deals out of 23,479 listings starting at $2,300
Used Hyundai Santa Fe
242 Great Deals out of 16,167 listings starting at $1,475
Used Acura MDX
462 Great Deals out of 17,128 listings starting at $1,200

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.