One problem related to transmission failure has been reported for the 2008 Honda Odyssey. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Honda Odyssey based on all problems reported for the 2008 Odyssey.
On August 6, 2011 I took my 2008 Honda Odyssey (33,2281 miles) in to be looked at because there was a leak under my vehicle. It was determined that the front torque oil shaft converter/transmission was leaking. Upon repair, I got home, and was experiencing the same problem. I took my van back to Honda on August 11, 2011, only to have them determine that during the initial repair they had broke one of the seals during the install. They kept my vehicle for another 3 days, and gave me a rental car during this time. On November 4, 2011 (33,946) I took my car back in to Honda because my steering wheel had become difficult to turn, and there was oil leaking from under my van again. The steering issue and the oil were both repaired again. My vehicle was returned to me on November 7, 2011. On Friday March 3, 2012 (35,650 miles)I took my van back in to Honda because my vehicle was sling-shooting and having very rough transitions in shifting gears in low speeds 35-45 mph. On March 4, 2012 Honda informed me that my transmission was flare shifting and had complete internal transmission failure, and the entire transmission would have to be replaced. To date, I have been told that because it is over 36 months, (but still under 36,000 miles) it may not be covered under my warranty, and that they cannot provide me with a rental this time. Three transmission issues, brake issues, steering issues, etc later I am without a vehicle again. I'd say this is a lemon. Help!.