Gas mileage has dropped drasticaly

avatheps
0

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

judge_roy
Not Active

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.

1 out of 1 people think this is helpful.
judge_roy
Not Active

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

2 out of 2 people think this is helpful.
judge_roy
Not Active

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 out of 1 people think this is helpful.
Jonathan Ford
3,265

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 out of 1 people think this is helpful.
Js08016
46,145

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 out of 1 people think this is helpful.
opusp
65

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.

6 out of 6 people think this is helpful.
Jonathan Ford
3,265

what kind of tires?

2 out of 2 people think this is helpful.
Imranulhaq Khan
0

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

Your Answer

Add photo
CR-V
Looking for a Used CR-V in your area?
CarGurus has 63,943 nationwide CR-V listings starting at $1,495.
ZIP:

Search Honda CR-V Questions

Honda CR-V Experts

#1 Tom Demyan
Tom Demyan
Reputation 2,210
#2 PEng
PEng
Reputation 1,150
#3 saman2812
saman2812
Reputation 1,000
View All

Related Models For Sale

Used Toyota RAV4"
462 Great Deals out of 40,051 listings starting at $1,800
Used Honda Accord"
547 Great Deals out of 73,681 listings starting at $1,495
Used Honda Pilot"
299 Great Deals out of 15,603 listings starting at $3,250
Used Honda Civic"
462 Great Deals out of 59,580 listings starting at $1,500
Used Ford Escape"
982 Great Deals out of 100,252 listings starting at $1,595
Used Nissan Rogue"
429 Great Deals out of 52,228 listings starting at $4,500
Used Toyota Highlander"
445 Great Deals out of 18,566 listings starting at $3,399
Used Toyota Camry"
929 Great Deals out of 76,356 listings starting at $1,000
Used Subaru Forester"
248 Great Deals out of 25,849 listings starting at $1,990
Used Hyundai Santa Fe"
310 Great Deals out of 23,658 listings starting at $1,450
Used Nissan Murano"
258 Great Deals out of 21,350 listings starting at $2,450
Used Acura MDX"
188 Great Deals out of 12,739 listings starting at $1,995
Used Toyota 4Runner"
249 Great Deals out of 13,364 listings starting at $1,875
Used Honda Odyssey"
272 Great Deals out of 32,172 listings starting at $1,500
Used Subaru Outback"
334 Great Deals out of 18,170 listings starting at $1,495