BumperScan
Powered byNHTSA|EPA|Community Reports
Your report: 3 of 4 steps complete75%
Car identifiedData collectedBasic analysisFull AI analysis

Free Preview

#BS-2021-HYUSON-240B

2021 Hyundai Sonata

Based on reports from 143 owners and 4 recalls for this exact model.

Complaints
143
Crashes
11
Fires
0
Recalls
4
TSBs
84
🟡

Preliminary Verdict

Think Twice

Based on 143 complaints, 11 crashes, 0 fires, and 4 recalls. Complaint rate is 3.3x the class average.

See full verdict with buy/skip conditions

Top reported problems

1

xm satellite antenna reception

1 complaints • Severity 8/10

$X,XXX
2

whistling wind noise

1 complaints • Severity 10/10

$X,XXX

Preview: What's in your full report

Each card shows a real sample from your report — unlock all 10 sections from $1.20

Mechanic Inspection Checklist

!Check the EngineHIGH

25 owners reported engine issues — failures commonly reported around 23K miles.

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

Failure Timeline by Mileage

13
0–30K
5
30–60K
2
60–90K
1
90–120K
120–150K
150K+

Peak failure range: 0–30K miles (13 reports) • Median: 23K 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: Engine (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

Other27 (19%)
Engine25 (17%)
Drivetrain18 (13%)
Fuel System15 (10%)
Electrical14 (10%)
Visibility7 (5%)
Collision Avoidance5 (3%)
Airbags4 (3%)

2021 Hyundai Sonata: Known Issues & Problem Areas

Engine Issues

Engine complaints account for 17% of all reports filed for the 2021 Hyundai Sonata, with 25 owners filing complaints with NHTSA. The median mileage at time of complaint is 23,000 miles, suggesting issues tend to surface around the 23K-mile mark.

Drivetrain Issues

Drivetrain complaints account for 13% of all reports filed for the 2021 Hyundai Sonata, with 18 owners filing complaints with NHTSA. Owners should pay attention to drivetrain-related symptoms during test drives and pre-purchase inspections.

Fuel System Issues

Fuel System complaints account for 10% of all reports filed for the 2021 Hyundai Sonata, with 15 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 10% of all reports filed for the 2021 Hyundai Sonata, with 14 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

11
21
26
22
28
23
22
24
41
25
15
26

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

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

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

Get Report — From $1.20

Recall History (4 recalls)

21V00M000Jun 2022

VISIBILITY:WINDSHIELD

Hyundai Motor America (Hyundai) is recalling certain 2020-2021 Santa Fe, 2021 Sonata, and Elantra vehicles. During manufacturing, the windshield may not have been properly bonded to the vehicle, allowing it to detach in a crash.

21V524000Sep 2021

FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS

Hyundai Motor America (Hyundai) is recalling certain 2021-2022 Santa Fe and Sonata vehicles equipped with 2.5L turbocharged engines. Fuel may leak at the pipe connection between the high-pressure fuel pump and fuel rail.

22V746000Jan 2023

POWER TRAIN:AUTOMATIC TRANSMISSION

Hyundai Motor Company (Hyundai) is recalling certain 2021-2022 Santa Fe, Sonata, Veloster N, 2022 Santa Cruz, Elantra N, and Kona N vehicles. The vehicle's "fail-safe" limited-mobility drive mode may be impaired, when prompted by a transmission oil pump malfunction, which can result in a complete loss of drive power.

25V796000

FUEL SYSTEM, GASOLINE

Hyundai Motor America (Hyundai) is recalling certain 2020-2023 Sonata vehicles. A damaged check valve can allow air to enter the fuel tank, causing it to expand and contact hot exhaust components, melting the tank.

Recall severity analysis & seller scripts

The full report rates each recall's severity and gives you scripts for asking the seller about recall completion.

Unlock

The worst model year for the Hyundai Sonata is the 2011 — worth knowing if you're cross-shopping years. The biggest problem area is engine.

2021 Hyundai Sonata vs. Class Average (Large Cars)

This vehicle

143

Class avg

44

3.3x 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. 143 records for this vehicle.

NHTSA Recalls

Manufacturer-issued safety recalls. 4 recalls found for this vehicle.

Repair Cost Data

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

Other Hyundai Sonata Model Years

20262025202420232022202120202019201820172016201520142013201220112010200920082007200620052004200320022001200019991998199719961995199419931992199119901989198819871986
View all Hyundai Sonata years →

2021 Hyundai Sonata: Frequently Asked Questions

What is the most common problem with the 2021 Hyundai Sonata?
The most commonly reported issue with the 2021 Hyundai Sonata is related to the engine, with 25 complaints filed with NHTSA.
Is the 2021 Hyundai Sonata reliable?
The 2021 Hyundai Sonata has 143 complaints, 11 crash reports, and 0 fire reports filed with NHTSA. This is 3.3x the class average — higher than typical for its segment.
How much does it cost to fix 2021 Hyundai Sonata 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 have any recalls?
Yes, the 2021 Hyundai Sonata has 4 recalls on record. The full report includes recall severity analysis and scripts for asking the seller about recall completion.
What mileage do Hyundai Sonata problems start?
Based on 21 complaints with mileage data, the median mileage at time of complaint is 23,000 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.
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.
RaccoonEagleRoverCat

Get the Full 2021 Hyundai Sonata Report

10 sections of AI analysis based on 143 owner reports. Know before you buy.

Get Full Report — From $1.20Money-back guarantee
Instant delivery|One-time purchase|No hidden fees