Something like a bad coolant temperature sensor could cause the engine to run rich and burn more gas than necessary, lowering your mpg. A stuck open thermostat can have a similar effect.
Related topics
| Topic | Replies | Views | Activity | |
|---|---|---|---|---|
| 2012 Highlander MPG down 40%! | 12 | 321 | November 25, 2024 | |
| Poor gas mileage? | 20 | 8426 | January 11, 2009 | |
| 2001 Jeep Cherokee Sport 4 liter Mileage issues | 5 | 963 | February 7, 2009 | |
| Poor gas mileage on 2009 Chrysler Town and Country | 15 | 17668 | February 12, 2013 | |
| Poor gas mileage on new car | 62 | 8827 | October 28, 2016 |