I Don't Think My Yaris Has DFCO

[BailOut]

That's odd. All NA Yarii have it, Kaotic, and yours is the first time I've ever heard of DFCO causing less MPG rather than a gain.

Are you sure you used DFCO properly (i.e. above 1,100 RPM and no clutch)? Were there other factors that changed your mileage this tank (i.e. colder temps,, different fuel station or type, more aggressive driving, inclement weather, low tire pressures, more weight in the car, shorter trips, more traffic, extended idling, etc.)?

[Kaotic Lazagna]

Originally Posted by BailOut

That's odd. All NA Yarii have it, Kaotic, and yours is the first time I've ever heard of DFCO causing less MPG rather than a gain.

Are you sure you used DFCO properly (i.e. above 1,100 RPM and no clutch)? Were there other factors that changed your mileage this tank (i.e. colder temps,, different fuel station or type, more aggressive driving, inclement weather, low tire pressures, more weight in the car, shorter trips, more traffic, extended idling, etc.)?

no, i'm not stepping on any pedals. the only things i did different were a couple more start up than usual, and using the A/C once on a very short trip (meaning no more than 15 miles, and the fan was set to 1 or 2 and wasn't on for the entire trip). i also drove 5 mph slower to compensate for the A/C. and i either switched to a lower gear or used the clutch once the RPM's hit 1500.

not sure if it makes a difference, but my Yaris was one of the first few batches in the Vallejo dealership...