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#BS-2021-TOYSIE-5568

2021 Toyota SiennaProblems, Recalls & Reliability

Based on reports from 223 owners and 1 recall for this exact model.

Data updated ·checked October 21, 2026 · NHTSA complaints through October 19, 2026

Complaints
223
Crashes
19
Fires
5
Recalls
1
TSBs
98
🛑

Preliminary Verdict

Red Flag

Based on 223 complaints, 19 crashes, 5 fires, and 1 recalls.

See full verdict with buy/skip conditions

Top reported problems

1

no spare tire

1 complaints • Severity 8/10

$X,XXX
2

intermittent brake release

1 complaints • Severity 10/10

$X,XXX

Preview: What's in your full report

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Mechanic Inspection Checklist

!Check the BrakesHIGH

80 owners reported brakes issues — failures commonly reported around 29K miles.

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

Failure Timeline by Mileage

7
0–30K
2
30–60K
2
60–90K
1
90–120K
120–150K
150K+

Peak failure range: 0–30K miles (7 reports) • Median: 29K 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: Brakes (80 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

Brakes80 (36%)
Other27 (12%)
Seats17 (8%)
Airbags16 (7%)
Electrical13 (6%)
Speed Control9 (4%)
Engine8 (4%)
Drivetrain8 (4%)

2021 Toyota Sienna: Known Issues & Problem Areas

Brakes Issues

Brakes complaints account for 36% of all reports filed for the 2021 Toyota Sienna, with 80 owners filing complaints with NHTSA. The median mileage at time of complaint is 28,800 miles, suggesting issues tend to surface around the 29K-mile mark.

Seats Issues

Seats complaints account for 8% of all reports filed for the 2021 Toyota Sienna, with 17 owners filing complaints with NHTSA. Owners should pay attention to seats-related symptoms during test drives and pre-purchase inspections.

Airbags Issues

Airbags complaints account for 7% of all reports filed for the 2021 Toyota Sienna, with 16 owners filing complaints with NHTSA. Owners should pay attention to airbags-related symptoms during test drives and pre-purchase inspections.

Electrical Issues

Electrical complaints account for 6% of all reports filed for the 2021 Toyota Sienna, with 13 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

21
21
46
22
45
23
68
24
34
25
9
26

Complaints filed with NHTSA by year for the 2021 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

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Recall History (1 recall)

22V239000May 2022

ELECTRONIC STABILITY CONTROL (ESC):CONTROL MODULE:SOFTWARE

Toyota Engineering & Manufacturing (Toyota) is recalling certain 2022 Lexus LX 600, Lexus NX 350h, Lexus NX 450h+, Toytoa RAV4 Hybrid, 2021-2022 Lexus LS 500h, Toyota Mirai, RAV4 PRIME, Sienna, Venza, and 2020-2022 Toyota Highlander Hybrid vehicles. The Skid Control ECU software may not turn on the Vehicle Stability Control (VSC) system when the vehicle is restarted after the driver has disabled the VSC system. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 126, "Electronic Stability Control Systems."

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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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.

2021 Toyota Sienna vs. Class Average (Minivan - 2WD)

This vehicle

223

Class avg

198

Complaint volume is roughly in line with other minivan - 2wd vehicles from 2021.

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. 223 records for this vehicle.

NHTSA Recalls

Manufacturer-issued safety recalls. 1 recall found for this vehicle.

Repair Cost Data

Real-world repair costs from owner reports and independent databases.

Last updated (checked October 21, 2026). NHTSA complaints received through October 19, 2026.

Other Toyota Sienna Model Years

20222021202020192018201720162015201420132012201120102009200820072006200520042003200220012000199919981996
View all Toyota Sienna years →

2021 Toyota Sienna: Frequently Asked Questions

What is the most common problem with the 2021 Toyota Sienna?
The most commonly reported issue with the 2021 Toyota Sienna is related to the brakes, with 80 complaints filed with NHTSA.
Is the 2021 Toyota Sienna reliable?
The 2021 Toyota Sienna has 223 complaints, 19 crash reports, and 5 fire reports filed with NHTSA. The full report analyzes whether these numbers indicate real risk or are proportional to the vehicle’s popularity.
How much does it cost to fix 2021 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 2021 Toyota Sienna have any recalls?
Yes, the 2021 Toyota Sienna has 1 recall 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 12 complaints with mileage data, the median mileage at time of complaint is 28,800 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 2021 Toyota Sienna data last updated?
BumperScan last checked this vehicle against NHTSA on October 21, 2026, covering owner complaints received through October 19, 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 223 owner reports. Know before you buy.

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