There are 2 owner-reported speed control & cruise complaints for the 2018 Toyota Siennain NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
I HAD TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT AND WHEN I RICH 85 SPEED THE CAR CHECK AND MY FRIEND HAVE THE SAME CAR SAM MODEL HE HAD THE SAME ISSUE
UNINTENDED ACCELERATION WHILE REVERSING VEHICLE. VAN WENT FULL THROTTLE AND SPED UP IN REVERSE WHILE BACKING UP FROM MY DRIVE WAY AT HOME. *TR
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026