What could have caused such a drastic drop in mpg so suddenly?

Asked by May 27, 2014 at 10:03 AM about the 2003 Honda Civic DX

Question type: Maintenance & Repair

My 2003 Honda civic has always averaged 30mpg until I had a cam sensor replaced. Since the I get 19-20mpg. Mechanics checked every out and found no reason for the drop in gas mileage. It could be coincidental and separate issues but what the hell. Do I have to live with this huge drop?

4 Answers

25,665

who can live with it? gas is expensive- that does not seem to be a coincidence- you replace the sensor and you start gettin' the bad mileage- now- WHY did you have the cam sensor replaced? sounds like you are goin' backwards-

1 people found this helpful.

My car would stall out and it was determined that my cam sensor was the issue. My car no longer stalls outs and runs well but the mileage is abysmal. My mechanic insisted everything checks out and the cam sensor would have nothing to do with mileage anyway. They spent an hour going through everything and found everything up spec. They did not check the torgue?? something or other because they couldn't find a 'portal?' to it.

To replace this part the only point of contact to cause friction would be the timing belt plastic cover, find out if they pulled it back off and checked for improper scratch/rub marks. I would take it to another shop if you cant check it yourself - you will find a video on the University of YouTube

I will check that out Rex and let you know what happens. Thanks so much!

Your Answer:

Civic

Looking for a Used Civic in your area?

CarGurus has 49,826 nationwide Civic listings starting at $1,495.

ZIP:

Honda Civic Experts

  • #1
    Tom Demyan
    Reputation
    1,290
  • #2
    Jonathan Ford
    Reputation
    1,060
  • #3
    Takoda Fraser
    Reputation
    1,050
View All

Related Models For Sale

Used Honda Accord
585 Great Deals out of 104,730 listings starting at $1,225
Used Honda Civic Coupe
94 Great Deals out of 10,888 listings starting at $1,300
Used Toyota Corolla
625 Great Deals out of 67,264 listings starting at $1,460
Used Toyota Camry
772 Great Deals out of 74,279 listings starting at $1,250
Used Honda CR-V
637 Great Deals out of 78,955 listings starting at $2,195
Used Nissan Altima
754 Great Deals out of 67,300 listings starting at $1,495
Used Hyundai Elantra
454 Great Deals out of 48,945 listings starting at $1,700
Used Mazda MAZDA3
263 Great Deals out of 25,352 listings starting at $1,200
Used Ford Mustang
268 Great Deals out of 38,445 listings starting at $1,350
Used Honda Accord Coupe
76 Great Deals out of 3,953 listings starting at $1,955
Used Ford Focus
393 Great Deals out of 80,941 listings starting at $1,295
Used Nissan Sentra
542 Great Deals out of 47,187 listings starting at $990

Used Cars For Sale

2018 Honda Civic For Sale
26,776 listings starting at $16,492
2017 Honda Civic For Sale
32 Great Deals out of 2,300 listings starting at $12,329
2016 Honda Civic For Sale
55 Great Deals out of 3,054 listings starting at $10,900
2015 Honda Civic For Sale
166 Great Deals out of 8,033 listings starting at $8,695
2014 Honda Civic For Sale
17 Great Deals out of 1,380 listings starting at $6,995

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.