The Lemon Index
202020223rd generation
Better than average · most complaints: electrical
41 owner complaints, first 3 years 21–25 mpg combined, EPA
Similar cars, same year
2021 Jeep Grand Cherokee 1252021 Ford Edge 532021 Nissan Murano 19
Lemon Index: 100 = the average car, lower is better.
What breaks most on the 2021 Chevrolet Blazer
- Fuel pump14 complaints
- Engine stalling11 complaints
- Coolant leak / overheating9 complaints
Specific parts named in the 142 owner complaints filed with NHTSA for the 2021 Chevrolet Blazer (all dates). Miles = the odometer owners typed in (middle half); cost = the repair bills owners wrote in those same complaints, in U.S. dollars. Owners' reports, not confirmed defects.
When problems show up
Only 12 complaints listed a mileage: too few to say when problems show up.
Questions to ask the seller
- Were recall 20V811000 (seat belts) done? Ask for the dealer printout, or check the VIN.
- Do all the lights, screens and power features work? Has the battery, alternator or any wiring been replaced?
- Any oil burning, leaks or check-engine lights? Ask for oil-change records.
- Do the brakes feel even, with no ABS or brake warning light? When were the pads and brake fluid last done?
- Chevy sent dealers 815 repair notes for this car. Was this one done: “This Preliminary information communicates the possibility of a engine oil leak that may occur…”?
From this year's own recalls, top problems, top repair bills and Chevy's repair notes. Recall repairs are free at any dealer.
How serious. Out of all 41 owner complaints filed so far (every year since it was sold, not just the first 3), owners reported:
“Average car” = what the same number of complaints would include at the rate across every model year we track. Owners report these themselves; NHTSA doesn't confirm the cause.
What owners complain about most. From owner complaints to the government.
Share of this year's owner complaints filed with NHTSA, not the share of cars that break. One complaint can name more than one area.
Check engine light on? Look up any code →
When owners reported problems. From owner complaints to the government.
Most owners who filed a complaint with NHTSA had 2K to 28K miles (4K to 45K km) on the car (12 of all 41 complaints filed so far listed the miles). This shows when people who had a problem reported it, not the odds that your car will have it.
In owners' words
Steering assist reduced message comes on and temperature guage goes down to cold not working and after you shut car off fan runs full force for 10 minutes. Shows no check engine light or no codes.
2021 Chevrolet Blazer owner · NHTSA complaint 11621771
More owner reports
My car caught on fire for no apparent reason. Front of car totally destroyed.
NHTSA complaint 11502601
Leaking coolant from bad radiator “just out of warranty”. Roughly $2000 repair estimate
NHTSA complaint 11594537
Fixes owners look up most.
From 200 YouTube videos · 19.7M views · 2019–2025 Chevrolet Blazer
Most-watched topics
- Infotainment, battery & electrical522K views
2019 - 2024 Chevy Blazer - How to Unlock & Start With Dead Or Bad Remote Key Fob Battery - ChevroletPYR Automotive · 145K views · 8 videos - Heat, A/C & blend door107K views
2019 - 2021 Chevy Blazer Cabin Air filter - How To Change Remove Replace - A/C AC Filter LocationPYR Automotive · 68K views · 2 videos - Intake, EGR & engine sensors86K views
2020 Blazer P0128 Code Issues Replace Coolant Temp SensorJames Foster LS3 TA · 48K views · 2 videos - Transmission & shifter84K views
2018-2023 Chevy Traverse/Blazer/GMC Acadia/Buick Enclave 9 speed transmission serviceSteeveGMTECH · 84K views
Show 2 more
- Windows, doors & mirrors84K views
2019-2024 Blazer Garage Door Programming (How to)The Snyds · 84K views - Timing chain & engine47K views
Chevrolet Blazer Oil Change (2019-2025) — Full Step-by-Step DIY Guide!Wrenching Mafia · 47K views
Before you buy, watch
Should You Buy a 2025 Chevy Blazer EV SS? Thorough Review By A MechanicThe Car Care Nut Reviews · 101K views
Should you BUY a 2024 Chevrolet Blazer RS EV Rear Wheel Drive for BETTER range?Raiti's Rides · 24K views
2019 Chevrolet Blazer – Review & Road TestKelley Blue Book · 525K viewsViews show how many people looked up each fix, not how often it breaks. Videos belong to their creators; we link to them. The 2021 is the same generation.
Costs are the middle (median) of the dollar amounts people say out loud in these videos, so one wild number can't swing it. They aren't verified bills or sales; real prices depend on year, miles, condition and where you live. Tap Hear it to jump to the moment.
Problems Chevy told dealers about
Chevy sent dealers 815 repair notes for this car. The ones about its biggest problems:
- This Preliminary information communicates the possibility of a engine oil leak that may occur…
- This Preliminary information communicates that a dealer may encounter a vehicle that is making…
Ask a seller or mechanic if these were done. Some are free under warranty or a special program.
Recalls 1
- Seat belts · recall issued 2020
Incorrect bolts may have been used at one or more fastening locations to secure the seat belts to the vehicle.
Recall repairs are free at any dealer. A recall only matters if it's still open on that exact car, so check its VIN.
Canada? See recalls at Transport Canada
Every Chevrolet Blazer recall, all years · All Chevrolet recalls
Safety
Crash test details
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| Chevrolet Blazer SUV AWD | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★☆ |
| Chevrolet Blazer SUV FWD | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★☆ |
Fuel cost and engines
About $2,400–$2,850 (USD) a year in fuel (EPA estimate at U.S. prices, 15,000 miles or 24,000 km a year). Engines: 2.0L 4-cyl, 2.5L 4-cyl, 3.6L 6-cyl.
Every Chevrolet Blazer year. 2021 is highlighted. Lower is better.
Show 5 older years (1995–1999, YouTube reviews only, no complaint data)
Newest year first. Red = worse than average, gray = about average, too new (2023+: a partial score, marked “partial”) or too few complaints to score. #1, #2… = that year's YouTube rank among the 17 Chevrolet Blazer years with enough videos (#1 = the year owners and reviewers talk about most positively). It is not a reliability rank.
Embed this chart
Put this chart on your site, blog or forum. Free, with the credit line built in; the 2021 bar is highlighted.
<iframe src="https://lemonindex.com/embed/cars/chevrolet-blazer/?y=2021" title="Chevrolet Blazer reliability by model year (The Lemon Index)" width="100%" height="491" style="border:0;max-width:720px" loading="lazy"></iframe><p style="font-size:13px;margin:4px 0 0">Data: <a href="https://lemonindex.com/cars/chevrolet-blazer/2021/">Lemon Index</a> (2021 Chevrolet Blazer reliability)</p>Quick answers
Is the 2021 Chevrolet Blazer reliable?
Yes, better than average by government complaints. It drew about half as many complaints as the average car filed with NHTSA in its first 3 years, per car sold (Lemon Index 54; 100 is average, lower is better). The Chevrolet Blazer year with the fewest complaints per car sold since 2010 is 2020.
What are the most common 2021 Chevrolet Blazer problems?
In owner complaints to the government, the parts named most are electrical (24%), engine (24%) and brakes (22%). That is the share of complaints, not the share of cars that break.
How many recalls does the 2021 Chevrolet Blazer have?
1 safety recall (latest: seat belts). Recall repairs are free at any dealer; check a specific car's VIN at nhtsa.gov/recalls.
What gas mileage does the 2021 Chevrolet Blazer get?
21 to 25 mpg combined, depending on the engine (EPA estimate).
Is the 2021 Chevrolet Blazer safe?
NHTSA gave it 5 out of 5 stars overall in its best tested version. Ratings differ by body style, and the full table is on the advanced page.
Does the 2021 Chevrolet Blazer have transmission problems?
Transmission and drivetrain issues aren't among its top 5 complaint areas.
How much does the 2021 Chevrolet Blazer cost in fuel a year?
About $2,400 to $2,850 a year, by the EPA's current estimate.
What engines does the 2021 Chevrolet Blazer have?
2.0L 4-cyl, 2.5L 4-cyl, 3.6L 6-cyl.
What Chevrolet Blazer year is better than the 2021?
Nearby, the 2020 drew fewer owner complaints per car sold (about a third as many complaints as the average car).
The Lemon Index counts owner complaints filed with the U.S. government (NHTSA) in a car's first 3 years, per car sold, against the average car of the same model years (100 = average, lower is better). It measures complaints, not crash safety. A complaint is an owner's report, not a confirmed defect. How it works