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#BS-2018-TOYSIE-55682018 Toyota Sienna
Based on reports from 83 owners and 7 recalls for this exact model.
Preliminary Verdict
Proceed with Caution
Based on 83 complaints, 5 crashes, 0 fires, and 7 recalls.
Top reported problems
pcs randomly stopped
1 complaints • Severity 10/10
poor gas mileage
1 complaints • Severity 6/10
poor fuel economy
1 complaints • Severity 8/10
Preview: What's in your full report
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Mechanic Inspection Checklist
15 owners reported drivetrain issues — failures commonly reported around 16K miles.
Failure Timeline by Mileage
Peak failure range: 0–30K miles (28 reports) • Median: 16K miles
30,000-Mile Cost Projection
Best Case
Most Likely
Worst Case
Top cost driver: Drivetrain (15 reports).
Also in your report
Owner Intelligence
AI-synthesized themes from real complaints
Buyer Lot Checklist
Questions, test drive checks, walk-away triggers
Negotiation Talking Points
Data-backed dollar deductions
Buy / Skip Verdict
Final recommendation with conditions
Where the complaints fall
2018 Toyota Sienna: Known Issues & Problem Areas
Drivetrain Issues
Drivetrain complaints account for 18% of all reports filed for the 2018 Toyota Sienna, with 15 owners filing complaints with NHTSA. The median mileage at time of complaint is 16,000 miles, suggesting issues tend to surface around the 16K-mile mark.
Fuel System Issues
Fuel System complaints account for 16% of all reports filed for the 2018 Toyota Sienna, with 13 owners filing complaints with NHTSA. Owners should pay attention to fuel system-related symptoms during test drives and pre-purchase inspections.
Speed Control Issues
Speed Control complaints account for 6% of all reports filed for the 2018 Toyota Sienna, with 5 owners filing complaints with NHTSA. Owners should pay attention to speed control-related symptoms during test drives and pre-purchase inspections.
Electrical Issues
Electrical complaints account for 6% of all reports filed for the 2018 Toyota Sienna, with 5 owners filing complaints with NHTSA. Owners should pay attention to electrical-related symptoms during test drives and pre-purchase inspections.
Data sourced from NHTSA owner complaints and community reports. The full report analyzes severity, repair costs, and failure patterns for each category.
Complaint trend by year
Complaints filed with NHTSA by year for the 2018 Toyota Sienna. Recent trend: decreasing.
Don't negotiate blind — know what this car costs to own
Repair costs • Negotiation scripts • Mechanic checklist • Buy/skip verdict
Recall History (7 recalls)
WHEELS
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2018 Toyota Sienna vehicles built with a specific lot of 10-spoke alloy wheels from one production facility. These wheels may not have been properly cooled during manufacturing. As a result, the wheels may crack in the spokes from an impact while driving.
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGS
Braun Corporation (Braun) is recalling certain 2014-2019 Toyota Sienna mobility van conversions. The brake lines may have incorrect tube nut fittings installed, which may cause a pressure drop within the braking system.
EQUIPMENT:OTHER:LABELS
Southeast Toyota Distributors, LLC (SET) is recalling certain 2017-2019 Toyota Camry, Corolla, Rav4, Sienna, and Yaris iA vehicles equipped with factory-installed floor mats. The load carrying capacity modification label may be incorrect. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 110, "Tire Selection and Rims."
STEERING
Braun Corporation (Braun) is recalling certain modified 2017-2020 Toyota Sienna vehicles. The steering shaft extensions may have been improperly manufactured, possibly causing the extensions to fracture.
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGS
Vantage Mobility International, LLC (Vantage) is recalling certain 2012-2018 AMS Genesis wheelchair vans, built on a Toyota Sienna vehicles. The rubber brake hoses that attach to the rear wheel assembly may be too short, causing them to rub against the rear axle trailing arm.
+ 2 more recalls in the full report
Recall severity analysis & seller scripts
The full report rates each recall's severity and gives you scripts for asking the seller about recall completion.
The worst model year for the Toyota Sienna is the 2007 — worth knowing if you're cross-shopping years. The biggest problem area is accessories - interior.
2018 Toyota Sienna vs. Class Average (Minivan - 2WD)
This vehicle
83
Class avg
522
Below the class average — fewer complaints than typical minivan - 2wd vehicles. A good sign.
Complaint counts correlate with sales volume — popular vehicles naturally generate more reports. The full report normalizes for this.
About this data
NHTSA Complaints
Federal database of owner-filed safety complaints. 83 records for this vehicle.
NHTSA Recalls
Manufacturer-issued safety recalls. 7 recalls found for this vehicle.
Repair Cost Data
Real-world repair costs from owner reports and independent databases.
Other Toyota Sienna Model Years
2018 Toyota Sienna: Frequently Asked Questions
What is the most common problem with the 2018 Toyota Sienna?
Is the 2018 Toyota Sienna reliable?
How much does it cost to fix 2018 Toyota Sienna problems?
Does the 2018 Toyota Sienna have any recalls?
What mileage do Toyota Sienna problems start?
What’s in the full report?
How is this different from free NHTSA data?
How is this different from Carfax?
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Get the Full 2018 Toyota Sienna Report
10 sections of AI analysis based on 83 owner reports. Know before you buy.