One problem related to transmission failure has been reported for the 2014 Honda Odyssey. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2014 Honda Odyssey based on all problems reported for the 2014 Odyssey.
We were driving in stop and go traffic in CA and our 2014 Odyssey engine began to clunk and whole car jerked (like running over something like a speed bump) each time we tried to accelerate through second gear. Felt like hitting something or engine falling out. The car's transmission continued to do this every time we tried to accelerate between 20-30 miles per hour. It continued to jolt/jerk/and clunk for 20 miles as we drove on the freeway. This is dangerous and made my heart skip beats as it felt like the engine was going to fall out/like being in a crash. Contacted Honda but their service was about to close. We pulled over to do our errand and when we restarted the car it stopped. The shifting on the vehicle is not smooth through gears. Took next day to Honda and they will not fix as no diagnostic codes came up and cannot get the car to duplicate issue now. Now there is a TSB to update software but dealership will not do unless issue is duplicated again. Safety issue that your brand new vehicle may have engine transmission fail at any point during travel. Jolting is so severe when it happens that it could cause you to have an accident.