Is the 2021 Chevrolet BLAZER reliable?

The 2021 Chevrolet BLAZER has 189 complaints filed with NHTSA (2.9x the segment average). Our reliability verdict: below-average. Most common issue: ELECTRICAL problems.

What are common problems with the 2021 Chevrolet BLAZER?

Top problems: ELECTRICAL (38 complaints, avg repair $500); ENGINE (38 complaints, avg repair $500); OTHER (23 complaints, avg repair $500). Issues typically appear around 50K miles.

Are there any recalls on the 2021 Chevrolet BLAZER?

Yes, there are 1 recall(s): SEAT BELTS. Contact any Chevrolet dealer to verify if recalls have been completed on your specific vehicle.

How much does it cost to fuel a 2021 Chevrolet BLAZER?

The 2021 Chevrolet BLAZER gets 23 MPG combined. At current US average gas prices, driving 12,000 miles per year costs roughly $2087. See the interactive fuel cost calculator on this page for state-specific pricing.

How much does it cost to insure a 2021 Chevrolet BLAZER?

Estimated US average full-coverage insurance for the 2021 Chevrolet BLAZER is approximately $1,735/year (suv-midsize class). Actual quotes vary heavily by state, driver age, driving record, and credit — see the interactive insurance estimator on this page for state-specific pricing.

2021 Chevrolet BLAZER

Problems, Recalls & Reliability Report

Below Average

Quick Summary

The 2021 Chevrolet BLAZER has 189 owner complaints filed with NHTSA — that's 2.9x the segment average of 66. The most common issue is electrical problems (20% of all complaints), specifically: while driving the the whole dash goes blank for a few second, then then it reboots and eventually most of it comes back. however, it did this repeat this cycle and cannot tell if my signals are working or what my speed is. i have a video of it happening. the car has 2,700 miles.. i am taking to a. There is 1 recall issued for this model year. ⚠️ 2 fire reports filed.

2 fire reports 3 crash reports 2 injuries

189

Total Complaints

Recalls Issued

5/5

Safety Stars

2.9x

vs Segment Avg

Known Problems(top 5 of 8)

ELECTRICAL

38 complaints

20%

• WHILE DRIVING THE THE WHOLE DASH GOES BLANK FOR A FEW SECOND, THEN THEN IT REBOOTS AND EVENTUALLY MOST OF IT COMES BACK. HOWEVER, IT DID THIS REPEAT THIS CYCLE AND CANNOT TELL IF MY SIGNALS ARE WORKING OR WHAT MY SPEED IS. I HAVE A VIDEO OF IT HAPPENING. THE CAR HAS 2,700 MILES.. I AM TAKING TO A
• HEADLIGHTS FLASH OR STAY ON EITHER LOW OR HI BEAM,HATCH OPENS ITSELF, AWD POPING, NOISE IN DASH, SHIFTING INTO AWD BY ITSELF, TRANSMISSION NOT SHIFTING CORRECTLY . THERE IS NO PATTERN AND IT THROWS NO CODES. MAJOR ELECTRIC PROBLEMS. THE KEYLESS ENTRY PAD DIDN'T WORK THE DAY I PURCHASED MY CAR.
• Vehicle now has about 1200 and when driving, the instrument cluster panel that digital shows your speed, odometer and other information on my vehicle went blank. It is just a black screen. When this happened, it caused the steering wheel controls for radio volume and turning the station to not work

Typical onset: 50K miles Est. repair: $500

“WHILE DRIVING THE THE WHOLE DASH GOES BLANK FOR A FEW SECOND, THEN THEN IT REBOOTS AND EVENTUALLY MOST OF IT COMES BACK. HOWEVER, IT DID THIS REPEAT THIS CYCLE AND CANNOT TELL IF MY SIGNALS ARE WORKING OR WHAT MY SPEED IS. I HAVE A VIDEO OF IT HAPPENING. THE CAR HAS 2,700 MILES.. I AM TAKING TO A”

— NHTSA complaint filing

When Problems Appear on the 2021 Chevrolet BLAZER

Based on 26 owner complaints that included an odometer reading. Median mileage at time of complaint: 33K miles. Most complaints cluster in the 0-30K miles range.

Overall complaint distribution by mileage

0-30K

30-60K

60-100K

100-150K

150-200K

200K+

ENGINE

High-mileage issuemedian 63K mi · 5 reports

0-30K

30-60K

60-100K

100-150K

150-200K

200K+

Mileage figures are self-reported by owners in NHTSA complaint filings. Peak bucket = the mileage range with the most complaints for that component; it reflects when owners noticed and reported problems, not necessarily when the fault first occurred.

Recalls (1)

SEAT BELTS23/12/2020

General Motors, LLC (GM) is recalling certain 2020 Chevrolet Bolt EV and 2021 GMC Canyon and Sierra 1500, 2500 and 3500, Yukon, Yukon XL, Cadillac Escalade and Escalade ESV and Chevrolet Blazer, Camaro, Colorado, Equinox, Silverado 1500, 2500 and 3500, Suburban and Tahoe vehicles. Incorrect bolts may have been used at one or more fastening locations to secure the seat belts to the vehicle. If an incorrect bolt was used, the seat belt may not be properly attached to the vehicle.

Risk: If a seat belt assembly is not properly attached to the vehicle, the seat belt may not properly restrain an occupant in the event of a crash, increasing the risk of injury.

Fix: GM will notify owners, and dealers will replace the suspect bolts, free of charge. The recall began January 29, 2021. Owners may contact GMC customer service at 1-800-462-8785, Cadillac customer service at 1-800-458-8006, or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N202322230.

Fuel Cost Calculator for 2021 Chevrolet BLAZER

Live EIA prices

Annual miles driven: 12,000

Your state (affects local gasoline price)

Per year

$2,087

Per month

$174

Per mile

17.4¢

MPG

City driving (worst-case MPG)

$2,527/yr

Highway driving (best-case MPG)

$1,778/yr

Based on EPA fuel-economy ratings and EIA weekly retail prices (2026-07-20). Real-world cost varies with driving style, trim/engine, terrain, and traffic.

5-Year Gas Price History

EIA weekly retail data · 2021 → today

Show:

Current

$4.00

5-year low

$2.78

5-year high

$5.01

Since 2021

+27%

Source: US Energy Information Administration weekly retail gasoline prices.

Estimated Insurance Cost for 2021 Chevrolet BLAZER

Estimate only, not a quote. Modeled from NAIC + HLDI averages for a hypothetical 35-year-old driver with clean record + full coverage. Your actual quote depends heavily on your age, driving history, credit, ZIP code, and insurer.

Your state (affects local premium average)

Full coverage / year

$1,735

Full coverage / month

$145

Liability only / year

$600

vs US avg

+4%

How this estimate is calculated

US base full-coverage premium$1674

× state (US)1.00x

× vehicle class (suv-midsize)1.05x

× theft risk1.00x

× safety rating0.94x

× vehicle age1.05x

= Full coverage estimate$1735

Coverage assumed: 100/300/100 liability + comprehensive/collision, $500 deductibles. Data sources: NAIC 2024 + HLDI loss studies.

Maintenance & Warranty

Recommended Chevrolet BLAZER Service Intervals

Oil change

8K mi / 12 mo

Tire rotation

8K mi

Brake fluid

36 months

Transmission fluid

45K mi

Engine coolant

150K mi

Spark plugs

100K mi

Cabin air filter

23K mi

Engine air filter

45K mi

Differential (AWD/4WD)

45K mi

GM Oil Life System dynamically calculates oil change interval. DEXOS-approved oil required.

"Severe service" conditions (heavy towing, extreme temps, city stop-and-go) typically halve these intervals. Always consult your vehicle's owner's manual for the authoritative schedule.

Chevrolet New-Vehicle Warranty Coverage

Bumper-to-bumper (basic)

3 yr / 36K mi

Powertrain

5 yr / 60K mi

Hybrid/EV battery

8 yr / 100K mi

Corrosion (rust perforation)

6 yr / 100K mi

Roadside assistance

5 yr / 60K mi

These are the terms for a new Chevrolet. If you're buying a used 2021 BLAZER, remaining coverage is usually pro-rated from the vehicle's original in-service date. Not all coverage transfers between owners — check with a Chevrolet dealer for VIN-specific remaining warranty.

Estimated Repair Costs

ELECTRICAL(~50K mi)

$500

ENGINE(~50K mi)

$500

OTHER(~50K mi)

$500

BRAKES(~50K mi)

$500

TRANSMISSION(~50K mi)

$500

Estimates based on average reported repair costs. Actual costs vary by location, shop, and severity.

🔍 Pre-Purchase Inspection Checklist

Based on 189 owner complaints for this specific year, here's what to check or ask about:

☐
ELECTRICAL: WHILE DRIVING THE THE WHOLE DASH GOES BLANK FOR A FEW SECOND, THEN THEN IT REBOOTS AND EVENTUALLY MOST OF IT COMES BACK. HOWEVER, IT DID THIS REPEAT THIS CYCLE AND CANNOT TELL IF MY SIGNALS ARE WORKING OR WHAT MY SPEED IS. I HAVE A VIDEO OF IT HAPPENING. THE CAR HAS 2,700 MILES.. I AM TAKING TO A
Typically appears around 50K miles. Repair cost ~$500
☐
ENGINE: I had just purchased my vehicle around December 9 2021. On around Decmeber 16, 2021 around 8 am I was driving on the highway 65 miles an hour. & the vehicle came to a complete stop. It kepts saying my fuel tank was empty. I quickly turned off the vehicle & tried turning it on & it did. I dropped it
Typically appears around 50K miles. Repair cost ~$500
☐
OTHER: The contact owns a 2021 Chevrolet Blazer. The contact stated that while stopped at a railroad track, the vehicle independently stopped and went into crash mode while on the railroad tracks upon acceleration. The contact shifted the vehicle into reverse and then into park. Once the vehicle was placed
Typically appears around 50K miles. Repair cost ~$500
☐
BRAKES: OCCASIONAL GRINDING NOISE WHEN BRAKING
Typically appears around 50K miles. Repair cost ~$500
☐
RECALLS: Verify all 1 recall have been completed — free at any Chevrolet dealer
☐
General: Get a pre-purchase inspection from an independent mechanic ($100-$200)