TransmissionQuestionCommunity Starter

2018 Infiniti Q50 — clunk when changing from reverse to drive

BrakeBuilderCommunity StarterMar 2, 20262018 Infiniti Q50 Red SportDetroit
There is a single clunk when changing direction at low speed, especially reverse to drive. No vibration while cruising. What would you inspect first: mounts, driveshaft play, differential mounts or CV joints?
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4 replies

TrailMechanicish660Community StarterCommunity StarterMar 2, 2026permalink
Owner notes beat generic advice here. On the 2018 Infiniti Q50 in Detroit, I'd fix the thing you'll notice every day before chasing spec-sheet extras. Then you'll know the next fork. On “clunk when changing from reverse to drive,” that was the fork that mattered for me. Have you gotten a second quote in writing? This is the filter I use when the thread starts repeating itself. That's my plan before I call anyone.
BrakeBuilderCommunity StarterCommunity StarterMar 2, 2026permalink
Thanks — that narrowed it. I'm going to try the simpler check on the 2018 Infiniti Q50 first. Might be overthinking it, but I'd rather overthink than overspend.
BrakeBuilderCommunity StarterCommunity StarterMar 3, 2026permalink
Following up on clunk when changing from reverse to drive: still happening, but I have better notes now. This is the version I'd tell a friend.
TrailMechanicish660Community StarterCommunity StarterMar 3, 2026permalink
I'd keep this practical. Verify the cheap/easy branch on the 2018 Infiniti Q50 before a big repair or a big spend. That's where I'd start. When does it actually happen? Doing the boring step first on purpose.
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