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#BS-2018-TOYSIE-5568

2018 Toyota SiennaProblems, Recalls & Reliability

Based on reports from 89 owners and 7 recalls for this exact model.

Data updated ·checked October 30, 2026 · NHTSA complaints through October 28, 2026

Complaints
89
Crashes
5
Fires
0
Recalls
7
TSBs
300
🟢

Preliminary Verdict

Proceed with Caution

Based on 89 complaints, 5 crashes, 0 fires, and 7 recalls.

See full verdict with buy/skip conditions

Top reported problems

1

noise and vibration when blower motor is on

1 complaints • Severity 4/10

$X,XXX
2

automatic sliding door cable

1 complaints • Severity 4/10

$X,XXX
3

pcs randomly stopped

1 complaints • Severity 10/10

$X,XXX
4

oil seeping from the front timing cover gasket

1 complaints • Severity 4/10

$X,XXX
5

poor gas mileage

1 complaints • Severity 6/10

$X,XXX

Preview: What's in your full report

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Mechanic Inspection Checklist

!Check the DrivetrainHIGH

20 owners reported drivetrain issues — failures commonly reported around 24K miles.

!Inspect the Fuel SystemMED
Look for symptoms of wear and premature failure
+ 6 more items in full checklistUnlock

Failure Timeline by Mileage

28
0–30K
11
30–60K
4
60–90K
1
90–120K
2
120–150K
2
150K+

Peak failure range: 0–30K miles (28 reports) • Median: 24K miles

Full report: which components fail at each mileageUnlock

30,000-Mile Cost Projection

Best Case

$X,XXX

Most Likely

$X,XXX

Worst Case

$X,XXX

Top cost driver: Drivetrain (20 reports).

Includes fuel costs, common repairs, and recall riskUnlock

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

10 sections total in the full reportUnlock all

Where the complaints fall

Drivetrain20 (22%)
Other13 (15%)
Fuel System13 (15%)
Electrical5 (6%)
Engine5 (6%)
Structure:body5 (6%)
Speed Control5 (6%)
Airbags4 (4%)

2018 Toyota Sienna: Known Issues & Problem Areas

Drivetrain Issues

Drivetrain complaints account for 22% of all reports filed for the 2018 Toyota Sienna, with 20 owners filing complaints with NHTSA. The median mileage at time of complaint is 24,000 miles, suggesting issues tend to surface around the 24K-mile mark.

Fuel System Issues

Fuel System complaints account for 15% 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.

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.

Engine Issues

Engine 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 engine-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

11
18
13
19
19
20
12
21
5
22
6
23
9
24
5
25
9
26

Complaints filed with NHTSA by year for the 2018 Toyota Sienna. Recent trend: increasing.

Don't negotiate blind — know what this car costs to own

Repair costs • Negotiation scripts • Mechanic checklist • Buy/skip verdict

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Recall History (7 recalls)

18V130000Apr 2018

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.

19V410000Jun 2019

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.

19V503000Aug 2019

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."

19V532000Jul 2019

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.

19V553000Dec 2019

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.

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2018 Toyota Sienna NHTSA Safety Ratings

Overall

★★★★★

5 of 5 stars

Frontal crash

★★★★★

4 of 5 stars

Side crash

★★★★★

5 of 5 stars

Rollover

★★★★★

4 of 5 stars

From NHTSA's New Car Assessment Program (5-Star Safety Ratings). Where NHTSA tested more than one version of this vehicle, the lowest rating is shown.

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

89

Class avg

613

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. 89 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.

Last updated (checked October 30, 2026). NHTSA complaints received through October 28, 2026; safety ratings from NHTSA's 5-Star program.

Other Toyota Sienna Model Years

20222021202020192018201720162015201420132012201120102009200820072006200520042003200220012000199919981996
View all Toyota Sienna years →

2018 Toyota Sienna: Frequently Asked Questions

What is the most common problem with the 2018 Toyota Sienna?
The most commonly reported issue with the 2018 Toyota Sienna is related to the drivetrain, with 20 complaints filed with NHTSA.
Is the 2018 Toyota Sienna reliable?
The 2018 Toyota Sienna has 89 complaints, 5 crash reports, and 0 fire reports filed with NHTSA. This is below the class average — a positive sign for reliability.
How safe is the 2018 Toyota Sienna?
NHTSA rates the 2018 Toyota Sienna 5 out of 5 stars overall, with 4 stars in frontal crash tests, 5 stars in side crash tests, 4 stars for rollover resistance. Where NHTSA tested more than one version, the lowest rating is shown.
How much does it cost to fix 2018 Toyota Sienna problems?
Repair costs vary by issue. The full BumperScan report includes detailed repair cost estimates (low/median/high) for every major issue, plus a 30,000-mile total cost of ownership projection.
Does the 2018 Toyota Sienna have any recalls?
Yes, the 2018 Toyota Sienna has 7 recalls on record. The full report includes recall severity analysis and scripts for asking the seller about recall completion.
What mileage do Toyota Sienna problems start?
Based on 48 complaints with mileage data, the median mileage at time of complaint is 24,000 miles. The highest concentration of reported issues occurs in the 0–30K mile range. The full report breaks down exactly which components fail at each mileage bracket.
When was the 2018 Toyota Sienna data last updated?
BumperScan last checked this vehicle against NHTSA on October 30, 2026, covering owner complaints received through October 28, 2026 plus the latest recalls, investigations and technical service bulletins. Its numbers last changed on October 4, 2026.
What’s in the full report?
10 sections of AI analysis: severity-ranked issues, component scores (0-100), 30K-mile cost projection, failure timeline by mileage, recall details with seller scripts, owner sentiment analysis, mechanic checklist, buyer lot checklist, negotiation ammo with dollar figures, and a buy/skip verdict.
How is this different from free NHTSA data?
NHTSA gives you raw complaint text. BumperScan cross-references 2.1M+ complaints with community repair cost data, EPA fuel data, and recall records — then uses AI to synthesize it into actionable advice with dollar figures.
How is this different from Carfax?
Carfax is VIN-specific history ($45/report). BumperScan is model-level reliability intelligence — what problems this car is known for, what they cost, and whether you should buy it. Complementary, not competing.
What if the report isn’t useful?
100% money-back guarantee. If the report doesn’t help you make a more informed decision, we’ll refund you — no questions asked.
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10 sections of AI analysis based on 89 owner reports. Know before you buy.

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