2018 Toyota Sienna: Reliability Data

Source: NHTSA — 84 complaints
84
Total Complaints
16,000mi
Median Mileage
POWER TRAIN
Top Issue
5
Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

4,600 25th Percentile
16,000 Median Mileage
44,675 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

POWER TRAIN
16
UNKNOWN OR OTHER
13
FUEL/PROPULSION SYSTEM
9
ENGINE
5
ELECTRICAL SYSTEM
5
VEHICLE SPEED CONTROL
5
STRUCTURE:BODY
5
FUEL SYSTEM, GASOLINE
4
AIR BAGS
4
SEATS
4

Severity Assessment

5
Crashes
0
Fires
6
Injuries
0
Deaths

Sample Complaint Reports

"DRIVING ON 1-75 AND SUNROOF EXPLODED. GLASS ALL OVER OUR DOG IN THE BACK. NO TRAFFIC AROUND US THANK GOD. VAN IS 3 DAYS OLD. TOOK TO DEALER IN FLORIDA AFTER DUCT TAPING AROUND HOLE. TOLD IT WAS HIT BY SOMETHING. WE DID NOT HEAR ANYTHING BUT MY CONCERN IS IF WE AROUND ANY TRAFFIC WE MAY NOT BE HERE A..."
"I RENTED A 2018 TOYOTA SIENNA ON A RECENT TRIP TO HAWAII. UNLIKE EARLIER SIENNA MODELS (WHICH HAD BOLDER, THICKER LABELS FOR THE INDICATORS), THE INSTRUMENT PANEL WAS VERY FAINT AND HARD TO READ IN DAYLIGHT. IN SHADE, IT WAS ALMOST INVISIBLE. I CHECKED THE MANUAL TO SEE IF I COULD TURN THE BRIGHTNES..."
"I RENTED A 2018 TOYOTA SIENNA ON A RECENT TRIP TO HAWAII. UNLIKE EARLIER SIENNA MODELS (WHICH HAD BOLDER, THICKER LABELS FOR THE INDICATORS), THE INSTRUMENT PANEL WAS VERY FAINT AND HARD TO READ IN DAYLIGHT. IN SHADE, IT WAS ALMOST INVISIBLE. I CHECKED THE MANUAL TO SEE IF I COULD TURN THE BRIGHTNES..."

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28