NHTSA Owner Complaint Log
This page lists owner-reported complaints filed with NHTSA for the 2018 Lexus IS. Complaints are unverified consumer reports submitted to NHTSA and do not by themselves prove a defect or defect rate.
New engine
All four (4) door actuators stopped working or work intermittently. This is a known issue with both front and rear driver and passenger doors. Automobile doors will not open.
Sunroof suddenly exploded while driving on highway, no debris or accident happened. Spontaneous sunroof glass shatter
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.