There are 1 owner-reported suspension complaints for the 2018 Toyota Siennain NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
THE VEHICLE HAS BEEN WEARING TIRES DOWN UNEVENLY TO THE POINT STEEL BRAID BECOMES EXPOSED. IT HAS HAD 3 SETS OF TIRES IN LESS THAN 2 YEARS. IT HAS BEEN ALIGNED TWICE. THE REAR WHEELS ARE NOT WITHIN SPECS AND ARE FIXED AND IN ADJUSTABLE. TOYOTA HAS REFUSED TO LOOK INTO THE PROBLEM ANY FURTHER AND HAS STATED THAT IT MIGHT BE HOW THE VAN RIDES. HAVING THE ALIGNMENT OFF CAUSES THE TIRES TO WEAR DOWN TO AN UNSAFE LEVEL AND IT AFFECTS VEHICLE HANDLING AND PERFORMANCE. *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 26, 2026