2021 Chevrolet Blazer

Typical pattern

7.8% of complaints about the 2021 Chevrolet Blazer came in the first year, which is unremarkable for a 2021 vehicle — around the middle of the 159 model-years on record. The median complaint arrives at 4.7 yr in service. The most-reported system is engine (40 complaints), typically at 5.0 yr or about 36,000 miles.

Complaints: 204
Median age at failure: 4.7 yr
Median mileage: 36,000 n=30
Crash / fire / tow: 6.9% of reports
Safety recalls: 1

When each system is reported — middle 50% of complaints

System

0y2y4y6y8y10y12y14y

Engine

40 reports · 36,000 mi

5.0 yr

2.5%

Electrical system

39 reports · 38,000 mi

4.6 yr

2.6%

Other

20 reports

4.7 yr

Service brakes

18 reports · 400 mi

4.5 yr

Power train

18 reports · 84,000 mi

5.2 yr

11.1%

Fuel / propulsion

17 reports

4.9 yr

5.9%

Steering

15 reports · 24,000 mi

4.5 yr

6.7%

Safety recalls — NHTSA campaigns

20V811000 2020-12-23

Seat belts

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.

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.

In owners’ own words

Electrical system 2,700 mi 6 mo in service

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 DEALERSHIP

Electrical system mileage not reported 6 mo in service

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. HAD A NEW ONE INSTALLED 3 PROGRAMS AND NOW ALL THIS STARTED.

Electrical system mileage not reported 9 mo in service

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. With this, I have no safety features like lane assist now and can't tell my tire pressure.

Service brakes 400 mi 7 mo in service

OCCASIONAL GRINDING NOISE WHEN BRAKING' GRINDING NOISE WHEN VEHICLE HAD LESS THAN 400 MILES

Other Blazer model years

How to read this

This is what owners reported, not a reliability rating. People file with NHTSA about alarming failures, not routine ones, and complaint volume tracks how many cars were sold.
Failure ages come from the incident date on each complaint, populated on about 83% of records. Mileage is shown where reported — NHTSA’s 2021 system change cut mileage capture to roughly 15%, so it thins out sharply after MY2020.
Every rank compares this vehicle only against others of the same model year. A 2025 car has not had time to accumulate five-year failures, so comparing early-failure share across years is meaningless.
Fourteen make-months distorted by media storms and mass recalls — Toyota in February 2010 ran 11× normal volume across 33 models — are excluded.
Recalls are manufacturer actions and authoritative; complaints are not. A recall listed here may already have been performed on any individual car. Check a specific VIN at nhtsa.gov/recalls.