Major reduction in MPG after visit to dealership
10

Asked by JosietheSailor Dec 23, 2019 at 06:39 PM about the 2016 Hyundai Elantra GL FWD

Question type: Maintenance & Repair

I recently had my oil changed and tires rotated at my Hyundia dealership. My
car was getting 38-40 MPG before, and now 33-35 MPG. What did they do to
lower my MPG??

3 Answers
580

olgeezer answered 4 years ago

Does the eng perform any better,,,more power? Maybe they did a software update..more performance usually can mean less MPG...If not...try to see what weight multigrade oil they put in...Too Thick?

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