One problem related to transmission shudder has been reported for the 2012 Honda Odyssey. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Honda Odyssey based on all problems reported for the 2012 Odyssey.
I bought a brand new '12 Odyssey exl-nav (5-speed automatic transmission) and from the day I picked it up, I noticed a shuddering when the transmission was at a shift point, especially from 2nd to 3rd and 3rd to 4th. I am submitting this complaint because I see a registered compliant for Odyssey touring and touring elite models with 6-speed transmissions but not for the ex or exls with 5-speed transmission [NHTSA reference #10046880;TSB reference #sb-12-064]; however I have the same transmission issue. It has been in the shop at a Honda dealer twice now to resolve issue and last time they mentioned there had been a service bulletin issued for this issue and they uploaded a new software control module. However, I still have the issue and am concerned that this is a design-flaw issue that Honda may not be able to fix. Please expand the NHTSA issue to include the 5-speed transmissions as well and advise if there is anything I can do. Also, with the brand new vehicle, the rear brake rotors were warped and pulsed when breaking and had to be resurfaced within a month of delivery. That issue is now resolved.