"How reliable is the 2004 Toyota Sienna?"

"Based on 2588 NHTSA complaints, the 2004 Toyota Sienna has a median complaint mileage of 77000 miles. The most common issue is STRUCTURE:BODY:DOOR."

"What are common problems with the 2004 Toyota Sienna?"

"The most frequently reported component in NHTSA complaints for the 2004 Toyota Sienna is STRUCTURE:BODY:DOOR, accounting for a significant portion of the 2588 total complaints filed."

2004 Toyota Sienna: Reliability Data

Source: NHTSA — 2588 complaints

2588

Total Complaints

77,000mi

Median Mileage

STRUCTURE:BODY:DOOR

Top Issue

Crash Reports

When Do Complaints Happen?

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

47,000 25th Percentile

77,000 Median Mileage

109,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

STRUCTURE:BODY:DOOR

354

STRUCTURE:BODY

281

LATCHES/LOCKS/LINKAGES

228

STEERING

148

STRUCTURE

145

ELECTRICAL SYSTEM

116

VEHICLE SPEED CONTROL

100

UNKNOWN OR OTHER

TIRES

SEAT BELTS

Severity Assessment

Crashes

Fires

200

Injuries

Deaths

Sample Complaint Reports

"OWNER OF 2004 TOYOTA SIENNA XLE LIMITED - PRUCHASED IN JULY 2004. WHEN THE ANY OF THE VANITY LIGHTS ARE LEFT ON IN THE INSIDE OF THE VAN AND THE KEY IS OUT OF THE IGNITION THE LIGHTS NEVER TURN OFF...THERE IS NO AUTOMATIC BATTERY SAVER/SHUT-OFF. HOWEVER, I NOTICED THAT IN VANS RELEASED SINCE THEN ..."

"2004 TOYOTA SIENNA XLE LIMITED FREQUENTLY STALLS, CAUSING LOSS OF CONTROL OF VEHICLE. STALLS COMMENCED WITHIN DAYS OF ACQUIRING VEHICLE (PRIOR TO 100 MILES), HAVE OCCURRED MORE THAN 10 TIMES, AND HAVE OCCURRED AT 60 MPH, 40 MPH, 30 MPH, AND DURING TURNS IN FRONT OF ONCOMING TRAFFIC. DEALERSHIP REP..."

"WHILE DRIVING AUTOMATIC TRANSMISSION DID NOT SHIFT PROPERLY FROM THE "LOWER TO HIGHER GEAR. DEALER HAS INSPECTED VEHICLE AND STATED IT WAS RUNNING UNDER TOYOTA SPECIFICATIONS. *AK"

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