2021 Chevrolet

Blazer FWD

Auto 9-spd, 6 cyl, 3.6 L

Chevrolet Blazer: best and worst years

Overview

Body: Small Sport Utility Vehicle 2WDEPA, from EPA, last updated 6/11/2026
Drivetrain: Front-Wheel DriveEPA, from EPA, last updated 6/11/2026
Transmission: Automatic 9-spdEPA, from EPA, last updated 6/11/2026
Powertrain: GasEPA, from EPA, last updated 6/11/2026
Fuel: RegularEPA, from EPA, last updated 6/11/2026

Engine & performance

HP: 308
Power to weight: 0.096 hp/lb
Axle ratio: 3.49
Cyl: 6EPA, from EPA, last updated 6/11/2026
Aspiration: Naturally aspiratedEPA, from EPA, last updated 6/11/2026
Start-stop system: YesEPA, from EPA, last updated 6/11/2026

Efficiency

MPG Hwy: 27 mpgEPA, from EPA, last updated 6/11/2026
MPG City: 20 mpgEPA, from EPA, last updated 6/11/2026
MPG Comb: 22 mpgEPA, from EPA, last updated 6/11/2026
Fuel $/yr: $2,850EPA, from EPA, last updated 6/11/2026
CO₂: 404 g/miEPA, from EPA, last updated 6/11/2026
Eco Score: 4/10EPA, from EPA, last updated 6/11/2026
Smog score: 6/10
Elec. Range: 0 miEPA, from EPA, last updated 6/11/2026
Real-world MPG: 22.7 mpg, reported by 1 driverabout 0.7 mpg above the EPA combined estimate
SmartWay certified: No

Dimensions & capacity

Length: 174 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Width: 71 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Height: 66 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Wheelbase: 104 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Curb Weight: 3,225 lbNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026

Safety NHTSA, model year

Overall crash rating: ★★★★★
Rollover rating: ★★★★★
Stability control (ESC): Standard
Forward-collision warning: Optional
Lane-departure warning: Optional
Recalls: 1
Owner complaints: 119
Reported injuries: 6

Feature availability

Which features come standard, cost extra, or are locked to a pricier trim arrives with the next data phase. Standard equipment shows here today.

Standard

Reported problems NHTSA owner complaints, model year

ELECTRICAL SYSTEM20%
ENGINE18%
UNKNOWN OR OTHER11%
SERVICE BRAKES10%
POWER TRAIN9%
STEERING8%

Source: NHTSA owner complaints, 184 total.

Chevrolet Blazer: best and worst years

Known issues manufacturer service bulletins, model year

575 service bulletins filed with NHTSA for this model year

May 11, 2026UNKNOWN OR OTHERPIC6551B
This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
May 11, 2026UNKNOWN OR OTHERPIC6423A
Pi created to provide GM dealers with information on gathering information for projection issue
Apr 1, 2026UNKNOWN OR OTHERPIT3271Q
This preliminary information communicates information about how to determine if a wheel and tires size change is available.
Mar 21, 2026UNKNOWN OR OTHERN25-250552
Improvements to OnStar functionality.
Mar 9, 2026UNKNOWN OR OTHERPIP6104
This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.
Mar 9, 2026UNKNOWN OR OTHERPIP4902V
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
Mar 2, 2026UNKNOWN OR OTHERPIT6425D
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC'ss
Feb 19, 2026FUEL/PROPULSION SYSTEMN252516900-01
Emission Recall. General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles listed above may have a condition which can cause the fuel pump power control module to fail. If this were to occur, fuel flow to the engine could be interrupted. Dealers will replace the fuel pump power control module.
and 567 more

Source: NHTSA manufacturer communications (technical service bulletins).

Warranty manufacturer terms, by make

Basic: 3 yr / 36k mi
Powertrain: 5 yr / 60k mi
Roadside assistance: 5 yr / 60k mi
Maintenance: 1 yr / 12k mi
EV battery: 8 yr / 100k mi

Information is gathered on a best-effort basis from public sources, may be incomplete or out of date, and is not purchasing or financial advice. Verify with the manufacturer or dealer before buying.