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#BS-2021-HYUSON-3ADF

2021 Hyundai Sonata HybridProblems, Recalls & Reliability

Based on reports from 74 owners and 0 recalls for this exact model.

Data updated ·NHTSA complaints through October 19, 2026

Complaints
74
Crashes
3
Fires
0
Recalls
0
TSBs
50
🟢

Preliminary Verdict

Proceed with Caution

Based on 74 complaints, 3 crashes, 0 fires, and 0 recalls. Complaint rate is 1.5x the class average.

See full verdict with buy/skip conditions

Top reported problems

1

excessive wind noise in cabin

2 complaints • Severity 6/10

$X,XXX
2

cup holder spring arms got stuck inside the housing

1 complaints • Severity 4/10

$X,XXX
3

coolant leak through the exhaust system

1 complaints • Severity 8/10

$X,XXX

Preview: What's in your full report

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Mechanic Inspection Checklist

!Check the ElectricalHIGH

25 owners reported electrical issues — failures commonly reported around 33K miles.

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

30,000-Mile Cost Projection

Best Case

$X,XXX

Most Likely

$X,XXX

Worst Case

$X,XXX

Top cost driver: Electrical (25 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

Electrical25 (34%)
Engine22 (30%)
Other7 (9%)
Fuel System5 (7%)
Drivetrain4 (5%)
Forward Collision Avoidance: Automatic Emergency Braking3 (4%)
Electrical System:12v/24v/48v Battery1 (1%)
Engine And Engine Cooling:engine:oil/lubrication:sump/tank:drain Plug1 (1%)

2021 Hyundai Sonata Hybrid: Known Issues & Problem Areas

Electrical Issues

Electrical complaints account for 34% of all reports filed for the 2021 Hyundai Sonata Hybrid, with 25 owners filing complaints with NHTSA. The median mileage at time of complaint is 32,547 miles, suggesting issues tend to surface around the 33K-mile mark.

Engine Issues

Engine complaints account for 30% of all reports filed for the 2021 Hyundai Sonata Hybrid, with 22 owners filing complaints with NHTSA. Owners should pay attention to engine-related symptoms during test drives and pre-purchase inspections.

Fuel System Issues

Fuel System complaints account for 7% of all reports filed for the 2021 Hyundai Sonata Hybrid, with 5 owners filing complaints with NHTSA. Owners should pay attention to fuel system-related symptoms during test drives and pre-purchase inspections.

Drivetrain Issues

Drivetrain complaints account for 5% of all reports filed for the 2021 Hyundai Sonata Hybrid, with 4 owners filing complaints with NHTSA. Owners should pay attention to drivetrain-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

2
21
24
23
29
24
11
25
8
26

Complaints filed with NHTSA by year for the 2021 Hyundai Sonata Hybrid. Recent trend: stable.

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

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2021 Hyundai Sonata Hybrid NHTSA Safety Ratings

Overall

★★★★★

5 of 5 stars

Frontal crash

★★★★★

4 of 5 stars

Side crash

★★★★★

5 of 5 stars

Rollover

★★★★★

5 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.

NHTSA Defect Investigations (1)

All closed. Investigations are how NHTSA decides whether a defect needs a recall.

DP22005ClosedOpened Jan 2023 · closed Aug 2023

Pedestrian alert sounds

ELECTRICAL SYSTEM:PROPULSION SYSTEM

The worst model year for the Hyundai Sonata Hybrid is the 2012 — worth knowing if you're cross-shopping years. The biggest problem area is engine.

2021 Hyundai Sonata Hybrid vs. Class Average (Large Cars)

This vehicle

74

Class avg

48

1.5x the class average — significantly more complaints than typical large cars vehicles.

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. 74 records for this vehicle.

NHTSA Recalls

Manufacturer-issued safety recalls. 0 recalls found for this vehicle.

Repair Cost Data

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

Last updated . NHTSA complaints received through October 19, 2026; safety ratings from NHTSA's 5-Star program.

Other Hyundai Sonata Hybrid Model Years

2026202520242023202220212020201920182017201620152014201320122011
View all Hyundai Sonata Hybrid years →

2021 Hyundai Sonata Hybrid: Frequently Asked Questions

What is the most common problem with the 2021 Hyundai Sonata Hybrid?
The most commonly reported issue with the 2021 Hyundai Sonata Hybrid is related to the electrical, with 25 complaints filed with NHTSA.
Is the 2021 Hyundai Sonata Hybrid reliable?
The 2021 Hyundai Sonata Hybrid has 74 complaints, 3 crash reports, and 0 fire reports filed with NHTSA. This is 1.5x the class average — higher than typical for its segment.
How safe is the 2021 Hyundai Sonata Hybrid?
NHTSA rates the 2021 Hyundai Sonata Hybrid 5 out of 5 stars overall, with 4 stars in frontal crash tests, 5 stars in side crash tests, 5 stars for rollover resistance. Where NHTSA tested more than one version, the lowest rating is shown.
How much does it cost to fix 2021 Hyundai Sonata Hybrid 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 Hyundai Sonata Hybrid have any recalls?
No recalls have been issued for the 2021 Hyundai Sonata Hybrid according to NHTSA records.
What mileage do Hyundai Sonata Hybrid problems start?
Based on 2 complaints with mileage data, the median mileage at time of complaint is 32,547 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 Hyundai Sonata Hybrid 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.
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 74 owner reports. Know before you buy.

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