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What 69 owners told NHTSA about the 2018 Toyota Sienna

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (69)Crash / fire / injury (6)Transmission & drivetrain (18)Fuel system (13)Electrical system (6)Airbags (5)Body & structure (5)Engine (5)Speed control (5)Seats (4)Brakes (2)Visibility & wipers (2)

5 of 69 complaints match · Engine · clear filters

Sep 9, 2024Engine

The contact owns a 2018 Toyota Sienna. The contact stated while driving at an undisclosed speed, the vehicle jerked and lost motive power. In addition, the contact stated that on several occasions the vehicle shut off independently. The vehicle was taken to the dealer; however, the failure could not be duplicated. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. In addition, the contact stated that the vehicle was taken to the dealer several times due to the failure. The contact stated that the failure began in 2019 but had become a persistent failure. The contact stated the vehicle was repaired under of an unknown recall and the fuel pump was replaced in 2020; however, the failure reoccurred. The manufacturer was not made aware of the failure. The failure mileage was unknown.

NHTSA ODI 11613601

Sep 4, 2023Electrical systemAirbagsEngine

N

NHTSA ODI 11542457

Feb 1, 2021EngineFuel system

MOBILITY WORKS SOLD ME A CAR,THAT HAD A RECALL,DESIGNED FOR SPECIAL NEEDS,THEY KNEW AVOUT IT PLUS THE RAMP WASNT WORKING PROPERLY,MADE ME PAY FOR AN EXPENSIVE WARRANTY THAT DOESNT COVER THE PROBLEM THAT ALREADY HAS,THEY ARE BLAMING ME FOR MISUSE I GOT IT 4 MONTHS AGO MY SON DOESNT WEIGHT MORE THAN 100 POUNDS

NHTSA ODI 11391084

Jan 23, 2020Engine

TL* THE CONTACT OWNS A 2018 TOYOTA SIENNA. WHILE DRIVING AT LOW SPEEDS MAKING A RIGHT TURN THE OIL WARNING INDICATOR LIGHT ILLUMINATED AND CONTACT NOTICED THE OIL WAS LOW. THE VEHICLE WAS TAKEN TO MECHANICSVILLE TOYOTA 6546 MECHANICSVILLE TURNPIKE, MECHANICSVILLE, VA 23111(804) 559-8000 WHERE IT WAS DIAGNOSED THAT THE OIL WAS LOW AND ADDITIONAL OIL NEEDED TO BE ADDED.THE VEHICLE WAS REPAIRED HOWEVER, THE FAILURE RECURRED. THE MANUFACTURER WAS CONTACTED BUT NO FURTHER ASSISTANCE WAS PROVIDED. THE FAILURE MILEAGE WAS 3,700. THE VIN WAS NOT AVAILABLE.

NHTSA ODI 11301350

Sep 26, 2018Transmission & drivetrainEngine

MY 2018 SIENNA LE IS EXPERIENCING ACCELERATION PROBLEMS. I HAD THE SOFTWARE UP DATED BUT AFTER APPROXIMATELY 1,000 MILES THE PROBLEM IS RETURNING. THIS PROBLEM IS ESPECIALLY UNSAFE WHEN MERGING ONTO THE HIGHWAY.

NHTSA ODI 11131655

Working with the data? Download all 69 complaints as CSV · fetched from NHTSA July 19, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2018 Toyota Sienna verdict →