2021 Chevrolet Blazer: Recalls, Problems & MPG
Here are the deets on the 2021 Chevrolet Blazer: 1 recall, 136 owner complaints and up to 25 mpg combined.
Recalls
1 vehicle recall from the manufacturer. Repairs are free. Check your VIN to see if one is still open on your car.
Seat belts, Seat belts Vehicle recall #20V811000 · 2020 · 470 vehicles
What's wrong: 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.
Why it matters: 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.
The fix: Gm will notify owners, and dealers will replace the suspect bolts, free of charge. The recall began January 29, 2021.
Most-reported problems
Owner complaints filed with NHTSA, by component. One complaint can list several components. 1 mention a fire, 7 injuries and 0 deaths were reported.
What owners describe
- Engine (42): the most common themes are warning light on (14), leaks (13), electrical failure (10).
- Electrical (39): the most common themes are electrical failure (14), stalls / loses power (11).
- Other / unknown (20): the most common themes are warning light on (4).
- Brakes (19): the most common themes are noise or vibration (9), brake failure / soft pedal (5), warning light on (5).
The 2021 Chevrolet Blazer has 136 owner complaints, ranking #15 of 27 Blazer model years for complaints (well below the 297 average). Complaints peaked in 2025 (60 filed that year). The typical problem showed up when the car was about 4 years old, at a median of 36,231 miles. Neighboring years: 2020 (221 complaints, 3 recalls), 2022 (51 complaints, 1 recalls).
Engines & fuel economy (EPA)
| Engine | Transmission | Drive | City | Hwy | Comb. | Fuel |
|---|---|---|---|---|---|---|
| 2.0 L 4-cyl turbo | Automatic 9-spd | Front-Wheel Drive | 22 | 29 | 25 | Regular |
| 2.0 L 4-cyl turbo | Automatic 9-spd | All-Wheel Drive | 22 | 27 | 24 | Regular |
| 2.5 L 4-cyl | Automatic (S9) | Front-Wheel Drive | 21 | 27 | 23 | Regular |
| 3.6 L 6-cyl | Automatic 9-spd | Front-Wheel Drive | 20 | 27 | 22 | Regular |
| 3.6 L 6-cyl | Automatic 9-spd | All-Wheel Drive | 19 | 26 | 21 | Regular |
Want the full repair deets? Get the factory manual.
Recall and complaint data tells you what goes wrong. A service manual tells you how to fix it: torque specs, wiring diagrams, fluid capacities and step-by-step procedures for the 2021 Chevrolet Blazer.
Closest thing to the factory manual for most years. Pay once, keep it.
Most $25–$78, one-timePro-shop repair procedures, wiring diagrams and TSBs for your exact car.
From $19.99/mo · $39.99/yrOEM procedures, specs and recall/TSB info, the same source many shops use.
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FAQ
Does the 2021 Chevrolet Blazer have any recalls?
Yes. NHTSA lists 1 vehicle recall for the 2021 Chevrolet Blazer. Recall repairs are free at any dealer, no matter how old the car is. Check your VIN at nhtsa.gov/recalls.
What are the most common 2021 Chevrolet Blazer problems?
Owners have filed 136 complaints with NHTSA. The most-reported areas are engine (42), electrical (39), other / unknown (20).
What gas mileage does the 2021 Chevrolet Blazer get?
EPA ratings run up to 25 mpg combined (2.0 L, Automatic 9-spd), across 5 engine and transmission combos.
Where can I get a 2021 Chevrolet Blazer repair manual?
eManualOnline sells downloadable manuals, Mitchell 1 DIY and ALLDATAdiy sell online access to factory repair data, and Haynes sells printed guides and online access. Pick a download if you want to keep it, or a subscription for wiring diagrams and TSBs.