Under-Carriage Plastic Protection Came Off; Could that Affect Gas Mileage?

Asked by Jun 28, 2016 at 04:44 PM about the 2009 Toyota Prius Base

Question type: Maintenance & Repair

I accidentally scraped the underneath front part of my Prius on a cement block at a parking lot; partially ripping off the plastic piece that covers the motor. I guess it's there to protect the motor from such scratches and dents. Anyway, I took the plastic piece off because it was dragging on the ground. Ever since then I've noticed that my gas mileage has been terrible. Down to 34 mpg instead of 42-45. Could there be any relation? Maybe the under-carriage cover helps the car's aerodynamics? Any thoughts would be appreciated.

2 Answers

29,065

air flow under car not as clean more drag and less air thru front grill cooling....but not enough to worry about....get a new on or a used one..and change the sparkplugs and add a bottle of ZMAX gas treatment to the fuel tank...........

14,145

Probably pulled the HEGO wires off the sensors or damaged them, Have it read for codes, even if the check engine light is NOT on the computer will have stored information and codes. Discount auto stores will read codes for no fee. write them down.

Your Answer

Toyota Prius Experts

  • #1
    TupeloMS
    Reputation
    680
  • #2
    raae
    Reputation
    640
  • #3
    jrdregs
    Reputation
    450
View All

Related Models For Sale

Used Toyota Camry
1,072 Great Deals out of 76,710 listings starting at $1,100
Used Toyota Corolla
888 Great Deals out of 69,846 listings starting at $1,479
Used Honda Civic
573 Great Deals out of 52,762 listings starting at $1,500
Used Honda Accord
838 Great Deals out of 87,587 listings starting at $1,444
Used Toyota RAV4
651 Great Deals out of 61,907 listings starting at $1,995
Used Honda Fit
110 Great Deals out of 18,786 listings starting at $1,495
Used Honda CR-V
707 Great Deals out of 62,079 listings starting at $1,495
Used Nissan Altima
1,145 Great Deals out of 74,665 listings starting at $900
Used Toyota Yaris
49 Great Deals out of 2,617 listings starting at $2,284
Used Ford Fusion
919 Great Deals out of 63,300 listings starting at $888

Used Cars For Sale

2017 Toyota Prius For Sale
16 Great Deals out of 1,989 listings starting at $17,273
2016 Toyota Prius For Sale
21 Great Deals out of 559 listings starting at $13,900
2015 Toyota Prius For Sale
111 Great Deals out of 1,736 listings starting at $9,700
2014 Toyota Prius For Sale
34 Great Deals out of 846 listings starting at $6,995
2013 Toyota Prius For Sale
32 Great Deals out of 733 listings starting at $5,188

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.