Reliability AnalysisBased on known issue patterns, repair cost data, and ownership trends · How we score

2004 Toyota Sienna Reliability ReportCommon Problems, Repair Costs & Expert Verdict

88/ 100
LOW RISK

Grade: A-

A top-tier family hauler offering exceptional reliability, if you mind the doors and watch for rust.

Full system breakdown + what I would do

Should You Buy the 2004 Toyota Sienna?

The 2004 Toyota Sienna stands as one of the most dependable used minivans on the market, offering exceptional longevity and comfortable family transport. While not without a few age-related Achilles' heels, particularly its power sliding doors and susceptibility to rust in colder climates, it consistently outperforms rivals in powertrain durability. This vehicle is a smart choice for buyers seeking reliable, low-stress daily transportation for years to come, provided key inspection points are addressed.

Biggest Strengths

  • Extremely durable 3.3L V6 engine
  • Robust 5-speed automatic transmission
  • Generally low cost of ownership and easy to maintain

Top Risk Areas

The systems that break first on the 2004 Toyota Sienna. Mileage windows, repair costs, and fix-before-you-buy notes are in the full report.

1
Power Sliding Doorsmoderate
2
Body & Frame Corrosionmajor
3
Engine (Oxygen Sensors)moderate
Typical mileage, cost ranges, and the exact what-to-check list are in the full report.

NHTSA Recalls

10 recalls on record from NHTSA. Check your VIN atnhtsa.gov to see if the repair was performed.

TIRES:TEMPORARY/EMERGENCY SPARE TIRE

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain model year 2004-2011 Sienna vehicles originally sold in, or currently registered in, Connecticut, Delaware, Illinois, Indiana, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, Virginia, West Virginia, Wisconsin and the District of Columbia. The affected vehicles have a spare tire carrier assembly mounted under the vehicle whose attachment cable may corrode due to high concentrations of road salt splashing onto the spare tire carrier.

ENGINE AND ENGINE COOLING

TOYOTA IS RECALLING CERTAIN MODEL YEAR 2004 AVALON VEHICLES; 2004 AND 2005 CAMRY, CAMRY SOLARA, HIGHLANDER, AND SIENNA VEHICLES, 2006 HIGHLANDER HYBRID; 2004 AND 2005 LEXUS ES330 AND RX330; AND 2006 LEXUS RX400H VEHICLES MANUFACTURED FROM JUNE 1, 2004 THROUGH MARCH 31, 2005, EQUIPPED WITH THE 1MZ-FE OR 3MZ-FE ENGINE. THE AMOUNT OF ADHESIVE AGENT APPLIED BETWEEN THE OUTER RING AND THE TORSIONAL RUBBER DAMPER (INNER RING) IN THE CRANKSHAFT PULLEY MAY BE INADEQUATE. IF THE ADHESIVE IS INSUFFICIENT, THERE IS A POSSIBILITY THAT THE OUTER RING MAY BECOME MISALIGNED AND IT MAY NOT PROPERLY ROTATE WITH THE INNER RING, CAUSING NOISE AND/OR ILLUMINATION OF THE BATTERY DISCHARGE INDICATOR LIGHT.

What breaks on the 2004 Toyota Sienna?

Full reliability breakdown — engine, transmission, rust, electrical. With repair costs and mileage danger zones.

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Toyota Sienna by Year

Compare reliability scores across nearby years of the Toyota Sienna. Click any year for its full report.

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Relevant Products for Your 2004 Toyota Sienna

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Frequently Asked Questions

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