One problem related to transmission noise has been reported for the 2020 Hyundai Elantra. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2020 Hyundai Elantra based on all problems reported for the 2020 Elantra.
Took our vehicle to the local Hyundai dealer on 1/30/2024 to have them look at the engine as my regular mechanic stated the "engine was knocking" at the most recent oil change, and get it to the dealer as it should be under warranty. Turns out it did need an engine which they replaced yesterday finally, however when they took it for a test drive they still heard noises. They examined it further and today they notified me it also needed a new transmission. This vehicle we have had since we bought it new in January of 2021, had less than 10k miles on it when we took it into the dealer on 1/30/2024. This is absolutely unacceptable. Thank goodness I had all my receipts to prove regular proof of maintenance esp since I have a regular guy and did not have it done at the dealers.