1999 Toyota Sienna Reliability ReportA- grade · low risk · system-by-system breakdown
Quick Facts · 1999 Toyota Sienna
- The system most likely to surface first: power steering system (moderate severity).
- Has 3 NHTSA recalls on record — the most notable involves the structure.
- Scores 4 points below the strongest nearby year — the 2001 Toyota Sienna earns a 92.
Is the 1999 Toyota Sienna Worth Buying?
The 1999 Toyota Sienna stands as a testament to Toyota's reputation for durability, offering one of the safest and most dependable used minivan options on the market. With its robust V6 engine and remarkably low incidence of major failures, this is a vehicle you can confidently rely on for years to come, especially if its maintenance history is solid.
The 1999 Toyota Sienna is an outstanding choice for anyone seeking a highly reliable and practical used minivan on a budget. Its legendary powertrain durability, coupled with affordable parts and straightforward maintenance, makes it a truly smart purchase. If you find one with a documented service history, particul…
Best Model Years
1998-2003 (The entire first-generation Sienna lineup maintains similar high reliability)
Years to Avoid
None in particular for this generation, but always prioritize condition and maintenance history over model year alone.
Biggest Strengths
- Extremely durable 1MZ-FE V6 engine
- Robust 4-speed automatic transmission
- Overall solid build quality and longevity
What Tends to Fail First on the 1999 Toyota Sienna
The systems that tend to fail first on the 1999 Toyota Sienna, with the typical mileage window when each becomes a concern. Detailed repair-cost ranges and exact what-to-check inspection notes are in the full report.
The power steering pump and associated lines are highly prone to leaks as the rubber seals and hoses age and harden. This leads to fluid loss, whining noises, and can eventually cause pump failure if ignored.
The power sliding door cables can stretch or snap, and the electric motors can fail due to wear and tear. This results in doors that won't open or close electrically, or operate with grinding noises and difficulty.
Front struts, lower control arm bushings, and sway bar links wear out over time and mileage. This causes clunking noises over bumps, reduced ride comfort, and potentially uneven tire wear or compromised handling.
1999 Toyota Sienna Mileage Danger Zones
The mileage windows when the 1999 Toyota Sienna most commonly needs attention. Plan ahead, budget accordingly, and inspect before you cross each threshold.
Low Risk Zone
At this mileage, the Sienna is still very new in its lifespan. Expect only routine maintenance like oil changes, tire rotations, and cabin/engine air filter replacements.
Maintenance Zone
This mileage brings more significant scheduled maintenance, preparing the vehicle for its long-term reliability. Focus on brake inspections, spark plugs, and potentially transmission fluid service.
Elevated Risk Zone
This is a critical maintenance milestone. The timing belt service is due, which is non-negotiable. Suspension components and power steering may also start to show signs of wear.
High Risk Zone
While still a highly capable vehicle, expect a higher likelihood of age-related component failures beyond routine maintenance. Seals, gaskets, and more complex accessory systems may require attention.
1999 Toyota Sienna Ownership Cost Outlook
What it typically costs to keep the 1999 Toyota Sienna on the road. Full 5-year cost-of-ownership projection and major-failure-risk forecast are in the report.
Annual Maintenance
$400-600
Moderate Repairs
$500-1,500 occasionally
How Long Does the 1999 Toyota Sienna Last?
Do not be deterred by higher mileage examples (150,000-200,000+) if they come with meticulous service records; a well-maintained, high-mileage Sienna is often a more reliable purchase than a lower-mileage vehicle with a questionable history.
What 1999 Toyota Sienna Owners Actually Say
What Owners Love
- Exceptional long-term reliability and mechanical durability
- Spacious and practical interior with versatile seating for families
- Smooth, quiet, and comfortable highway ride quality
- Strong and proven V6 engine provides adequate power
Common Frustrations
- Uninspired styling and somewhat dated interior aesthetics
- Mediocre fuel economy for its class and era (around 18-20 MPG combined)
- Automatic sliding doors can become a persistent maintenance nuisance with age
- Interior plastics and controls can feel somewhat cheap and are prone to cracking or breaking
Who Should Buy the 1999 Toyota Sienna?
Best For
- Budget-conscious families needing reliable and spacious transport
- Buyers prioritizing low long-term ownership costs
- Those seeking a practical and no-frills daily driver
Not Ideal For
- Drivers seeking modern technology and luxury amenities
- Performance enthusiasts or those needing significant towing capacity
How the 1999 Toyota Sienna Compares to Rivals
The 1999 Sienna consistently outperforms its domestic rivals in long-term reliability and overall build quality. While the contemporary Honda Odyssey offered a more engaging driving experience, its notorious transmission issues in certain model years make the Sienna a safer be…
More Reliable Than
- Dodge Grand Caravan (1996-2000)
- Chrysler Town & Country (1996-2000)
- Ford Windstar (1999-2003)
Comparable To
- Honda Odyssey (1999-2004)
1999 Toyota Sienna Recall History
3 recalls on record from NHTSA. Check your VIN atnhtsa.gov to see if the repair was performed.
STRUCTURE
TOYOTA IS RECALLING CERTAIN MODEL YEAR 1998 THROUGH 2010 SIENNA PASSENGER VEHICLES MANUFACTURED BETWEEN AUGUST 7, 1997 AND JANUARY 4, 2010, CURRENTLY REGISTERED IN OR ORIGINALLY SOLD IN CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, KENTUCKY, MAINE, MARYLAND, MASSACHUSETTS, MICHIGAN, MINNESOTA, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, WASHINGTON DISTRICT OF COLUMBIA, VIRGINIA, WEST VIRGINIA, AND WISCONSIN. THE SUBJECT VEHICLES ARE EQUIPPED WITH THE SPARE TIRE STOWED UNDER THE VEHICLE. IF THE VEHICLE IS OPERATED IN THE COLD CLIMATE REGIONS OF THE UNITED STATES WHERE ROAD SALT IS FREQUENTLY USED, WATER SPLASHED BACKWARDS WITH HIGH CONCENTRATIONS OF ROAD SALT CAN REACH THE SPARE TIRE CARRIER AND CORRODE THE SPARE TIRE CARRIER ASSEMBLY CABLE.
ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
VEHICLE DESCRIPTION: SPORT UTILITY VEHICLES, MINI VANS AND PASSENGER VEHICLES EQUIPPED WITH A THEFT DETERRENT SYSTEMS (TDS) SUPPLIED BY AUDIOVOX CORPORATION AND DISTRIBUTED BY SOUTHEAST TOYOTA DISTRIBUTORS, INC. IN THE STATES OF ALABAMA, FLORIDA, GEORGIA, NORTH AND SOUTH CAROLINA. THE ALARM WIRING HARNESS PLUGS INTO THE VEHICLE'S IGNITION SWITCH AND THE VEHICLE'S IGNITION SWITCH WIRING HARNESS PLUGS INTO THE ALARM HARNESS TO COMPLETE THE CIRCUIT. A PERCENTAGE OF THE FEMALE TERMINALS USED IN THE ALARM CONNECTOR WERE FOUND TO BE DEFECTIVE, CAUSING AN 'OPEN CIRCUIT' CONDITION WHEN MATED TO THE MALE IGNITION SWITCH TERMINALS.
What breaks on the 1999 Toyota Sienna?
Full reliability breakdown — engine, transmission, rust, electrical. With repair costs and mileage danger zones.
OwnerKeep Passport · $499 · one-time
Just bought a 1999 Toyota Sienna? Keep it that way.
Snap a receipt — AI logs it. Build an OwnerScore. Sell with a buyer-ready Passport dossier.
Other Toyota Sienna Years to Consider
Compare KeepScores across nearby years of the Toyota Sienna. Click any year for its full report.
1999 Toyota Sienna Alternatives
Similar class, similar year range — ranked by KeepScore.
Relevant Products for Your 1999 Toyota Sienna
Parts and accessories matched to your 1999 Toyota Sienna
As an Amazon Associate I earn from qualifying purchases.
Frequently Asked Questions
Related Comparisons
Just bought a 1999 Toyota Sienna? Keep it that way.
OwnerKeep Passport turns your Toyota Sienna's care history into a luxury digital vault — AI-logged receipts, an OwnerScore that pays at resale, and a buyer-ready dossier in one tap.
- AI receipt OCR — snap and log
- Fuel & mileage tracker
- Tri-Score OwnerScore
- One-tap resale dossier PDF
Recommended Reading for the Toyota Sienna
Toyota RAV4 Years to Avoid (Worst to Best Ranked)
Uncover the definitive Toyota RAV4 worst-to-best ranking to identify years to avoid and find the most reliable models for your next purchase.
Jeep Wrangler vs Toyota 4Runner: Which Lasts Longer?
Get the definitive answer: Which truly lasts longer, the Jeep Wrangler or Toyota 4Runner? Our comparison reveals their long-term durability.
Toyota Tacoma Common Problems and Repair Costs
Find common Toyota Tacoma problems and their average repair costs, vital information for current owners and future buyers to save money.