One problem related to power train has been reported for the 2002 Toyota Prius. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2002 Toyota Prius based on all problems reported for the 2002 Prius.
At the end of an 8 hour trip from va to TN, all the lights came on in the car and it lost power. We limped to a Toyota dealership and learned that the transaxle (transmission) and inverter had failed. Metal fragments were found in the transaxle fluid. The cost to replace both is estimated at $7,500. The car has 113k miles on it and was dealer-maintained according to Toyota plan.