i30 Owners Club

FUEL ISSUES & ECONOMY => PETROL => Topic started by: Wolvreen on August 29, 2023, 19:36:39

Title: Lost 10 mpg now only 260 miles per tank
Post by: Wolvreen on August 29, 2023, 19:36:39

Hi,
I have a 1.6 petrol i30 automatic.  It’s done 93k miles.  A few years ago my car changed from 36 mpg to 26 mpg.  The only thing I can think of is a faulty O2 sensor or dirty injectors.  Would these be flagged up on the OBD with alarms?

Title: Re: Lost 10 mpg now only 260 miles per tank
Post by: eye30 on August 30, 2023, 18:28:25

Is that mpg per the onboard read out or have you calculated by monitoring fuel refills, full tank to full tank?

Title: Re: Lost 10 mpg now only 260 miles per tank
Post by: Wolvreen on August 30, 2023, 21:30:55

Calculating from refills.