A better Blazer
The 2021 Blazer has about 200 complaints per 100,000 sold, a little below average. Cooling system complaints remain.
Updated November 2026 · based on 142 owner complaints and 1 recalls
202 close to the Blazer average
1 free to fix at a dealer
Every Blazer year compared
Owner complaints per 100,000 cars sold. Lower is better. The newest years have had less time to collect complaints, so they are marked too new to judge.
Top problems and what they cost
Cooling system
Temperature gauge and cooling faults.
Fix: Thermostat $300 to $600
Engine
Recalls
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 ...
Complaints by part
Before you buy a 2021 Chevrolet Blazer
- Watch the temperature gauge.Coolant keeps the engine from overheating. A dropping level, drips, white smoke or residue can mean leaks or a failing head gasket, which can ruin the engine.43 of the 142 owner complaints about the 2021 Blazer involve the engine and cooling system (30%).
- Check the coolant level.Coolant keeps the engine from overheating. A dropping level, drips, white smoke or residue can mean leaks or a failing head gasket, which can ruin the engine.43 of the 142 owner complaints about the 2021 Blazer involve the engine and cooling system (30%).
Questions
Is the 2021 Chevrolet Blazer reliable?
A better Blazer. The 2021 Blazer has about 200 complaints per 100,000 sold, a little below average. Cooling system complaints remain.
How many recalls does the 2021 Chevrolet Blazer have?
1 recall. Recall repairs are free at any Chevrolet dealer, even for later owners. Enter the VIN on the free government recall lookup to see which are still open on a specific car.
What are the most common 2021 Chevrolet Blazer problems?
Cooling system.
Crash rating shown for the 2021 Chevrolet Blazer SUV AWD. Repair costs are typical U.S. ranges for parts and labor, not quotes. How we score.