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#BS-2021-CHETRA-52BA

2021 Chevrolet TrailblazerProblems, Recalls & Reliability

Based on reports from 287 owners and 4 recalls for this exact model.

Data updated ·NHTSA complaints through October 28, 2026

Complaints
287
Crashes
17
Fires
5
Recalls
4
TSBs
754
🛑

Preliminary Verdict

Red Flag

Based on 287 complaints, 17 crashes, 5 fires, and 4 recalls.

See full verdict with buy/skip conditions

Top reported problems

1

fuel issue

2 complaints • Severity 6/10

$X,XXX
2

brakes are grinding squealing

1 complaints • Severity 8/10

$X,XXX
3

55 mph with 4000 rpm

1 complaints • Severity 8/10

$X,XXX

Preview: What's in your full report

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Mechanic Inspection Checklist

!Check the DrivetrainHIGH

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

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

Failure Timeline by Mileage

24
0–30K
10
30–60K
5
60–90K
90–120K
2
120–150K
150K+

Peak failure range: 0–30K miles (24 reports) • Median: 20K 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 (41 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

Other58 (20%)
Drivetrain41 (14%)
Electrical40 (14%)
Engine40 (14%)
Brakes32 (11%)
Fuel System18 (6%)
Forward Collision Avoidance: Automatic Emergency Braking9 (3%)
Steering6 (2%)

2021 Chevrolet Trailblazer: Known Issues & Problem Areas

Drivetrain Issues

Drivetrain complaints account for 14% of all reports filed for the 2021 Chevrolet Trailblazer, with 41 owners filing complaints with NHTSA. The median mileage at time of complaint is 20,000 miles, suggesting issues tend to surface around the 20K-mile mark.

Electrical Issues

Electrical complaints account for 14% of all reports filed for the 2021 Chevrolet Trailblazer, with 40 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 14% of all reports filed for the 2021 Chevrolet Trailblazer, with 40 owners filing complaints with NHTSA. Owners should pay attention to engine-related symptoms during test drives and pre-purchase inspections.

Brakes Issues

Brakes complaints account for 11% of all reports filed for the 2021 Chevrolet Trailblazer, with 32 owners filing complaints with NHTSA. Owners should pay attention to brakes-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

7
20
28
21
29
22
22
23
63
24
75
25
63
26

Complaints filed with NHTSA by year for the 2021 Chevrolet Trailblazer. Recent trend: stable.

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

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Recall History (4 recalls)

20V295000Jul 2020

EQUIPMENT:OTHER:LABELS

General Motors LLC (GM) is recalling certain 2021 Chevrolet Trailblazer vehicles factory-equipped with optional 17-inch sport terrain tires. The certification label on these vehicles does not provide the tire size and cold tire pressure information for front and rear tires, as required. As such, these vehicles fail to comply with Federal Motor Vehicle Safety Standard Number 110, "Tire Selection and Rims."

20V537000Oct 2020

SEATS:CRITICAL FASTENERS

General Motors LLC (GM) is recalling certain 2020 Buick Encore GX and 2021 Chevrolet Trailblazer vehicles. The rear attachment bolts of one or both front seats may not have been installed.

20V588000Dec 2020

SERVICE BRAKES

General Motors LLC (GM) is recalling certain 2020 Chevrolet Corvette and Cadillac CT4, CT5 and XT4, 2021 Chevrolet Trailblazer, and 2020-2021 Buick Encore GX vehicles. Sensor connection contamination in the electronic brake boost system may cause an interruption of communication between the sensor and the brake boost system.

21V440000Jul 2021

EQUIPMENT:MECHANICAL:ACCESSORY SCISSOR/SCREW/BOTTLE JACK/LIFT:STAND

General Motors, LLC. (GM) is recalling certain 2020-2022 Buick Encore GX and 2021-2022 Chevrolet Trailblazer vehicles. The emergency jack, if not positioned as directed in the vehicle owner's manual, can fracture while in use.

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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2021 Chevrolet Trailblazer NHTSA Safety Ratings

Overall

★★★★★

4 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 Chevrolet Trailblazer is the 2002 — worth knowing if you're cross-shopping years. The biggest problem area is accessories - interior.

2021 Chevrolet Trailblazer vs. Class Average (Small Sport Utility Vehicle 4WD)

This vehicle

287

Class avg

228

Complaint volume is roughly in line with other small sport utility vehicle 4wd 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. 287 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.

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

Other Chevrolet Trailblazer Model Years

20262025202420232022202120092008200720062005200420032002200120001999
View all Chevrolet Trailblazer years →

2021 Chevrolet Trailblazer: Frequently Asked Questions

What is the most common problem with the 2021 Chevrolet Trailblazer?
The most commonly reported issue with the 2021 Chevrolet Trailblazer is related to the drivetrain, with 41 complaints filed with NHTSA.
Is the 2021 Chevrolet Trailblazer reliable?
The 2021 Chevrolet Trailblazer has 287 complaints, 17 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 safe is the 2021 Chevrolet Trailblazer?
NHTSA rates the 2021 Chevrolet Trailblazer 4 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 2021 Chevrolet Trailblazer 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 Chevrolet Trailblazer have any recalls?
Yes, the 2021 Chevrolet Trailblazer has 4 recalls on record. The full report includes recall severity analysis and scripts for asking the seller about recall completion.
What mileage do Chevrolet Trailblazer problems start?
Based on 41 complaints with mileage data, the median mileage at time of complaint is 20,000 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 2021 Chevrolet Trailblazer 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.
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 287 owner reports. Know before you buy.

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