samuelsx

Bought an used 2007 odyssey touring a month ago and been crying over spilled milk since.

You guys on the forum have been great and have gained a lot surfing through. So putting in my cents

Terrible mileage, same as my 4.7 V8.
Oil change done at dealer in May. I changed out the air filter after I bought for the heck of it.
Tire pressure 38psi.
Looked at the MAF as an internal indicator and its pristine, still sprayed some MAF cleaner and put it back.
Two tanks with techron injector cleaner.

Hwy or city its 15 to 16mpg on the multi readout.

Been calling dealer and been hearing "its normal".

Recently I noticed something and verified it last night with a long drive.

I count the shifts and the instant mpg readout gives 25 to even 30 on 4th cruising 45 to 50 with ECO on. I feel the shift to 5th (OD) and the ECO still on the mpg drops to 12 with no change in gas pedal or speed or gradient.

to check I flipped D3 on (cancel OD) still level road and as I would expect the engine rev'ed then I swithched of D3 mpg back to 25 before OD kicked in and then mpg down to 12.

sorry for the writeup and thanks for reading.
Has anyone else seen/diag'ed this.

DChan415

I would say 15 to 16 mpg average isnt bad. If you're doing all highway miles, it would sound low. If your MAF is reading within spec, the air fuel ratio sensor is the next suspect. There are specific tests you can do on those parts.

samuelsx

Thank you for the post.
I did real life mileage lookup and looks like 15 to 16 is what people are getting in the city.
My quip is with the hwy mileage where as soon as the ody shifts into the final (5th) gear the instant mileage reader drops the mpg to around 12.
Had the service dept at the local dealer drive it and they said they don't believe the instant mpg reader!! Ha Ha, they wanted me to do real mpg check.
Now how am I supposed to do a hwy only mpg check in final gear.
The service dpt did a check, did not find any codes, said all software was up to date, nothing required, they were gracious to not charge me for the checkup.