One problem related to transmission noise has been reported for the 2015 Hyundai Santa Fe. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 Hyundai Santa Fe based on all problems reported for the 2015 Santa Fe.
My transmission went out at 114,000 miles they found metal shavings in it, we had it replaced. Now at 134,000 miles the engine went out, they found metal shavings in that also. It has been sitting at Hyundai since December 2019 it is now February 2020 and still without a car or a rental. Service department built and new engine after they tested the engine it started making noises again and apparently Hyundai sent them some part that didn't fit now they have to fix it again. . . Hyundai corporate has only offered to pay half of the repairs even though it was an engine malfunction. Both of these issues happen while driving. The engine shut down while on the freeway when it broke.