The Lemon Index
201920213rd generation
One of the most reliable · most complaints: transmission & drivetrain
Fewest complaints of its generation (3rd generation).
31 owner complaints, first 3 years 21–24 mpg combined, EPA
Similar cars, same year
2020 Jeep Grand Cherokee 492020 Ford Edge 652020 Nissan Murano 51
Lemon Index: 100 = the average car, lower is better.
What breaks most on the 2020 Chevrolet Blazer
- Coolant leak / overheating13 complaints
- A/C blowing warm air9 complaints
Specific parts named in the 224 owner complaints filed with NHTSA for the 2020 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 recalls 21V115000 (tires), 20V668000 (transmission & drivetrain) and 20V446000 (airbags) done? Ask for the dealer printout, or check the VIN.
- Any slipping, hard or late shifts, or a transmission warning light? Ask for transmission fluid service records.
- 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.
- Chevy sent dealers 856 repair notes for this car. Was this one done: “This informational bulletin provides information on Internal Engine Noise or Damage After Oil…”?
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 31 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 1K to 15K miles (2K to 24K km) on the car (12 of all 31 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
Shifter will not fully engage park. Vehicle can be shut off while not in park.
2020 Chevrolet Blazer owner · NHTSA complaint 11500933
More owner reports
Twice while I have been driving the instrument panel went blank. In motion.
NHTSA complaint 11389965
The vehicle drops to low gear without warning (check engine light comes on). Causing speed to drop to less than 20Mph max.
NHTSA complaint 11496633
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 2020 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 856 repair notes for this car. The ones about its biggest problems:
- This informational bulletin provides information on Internal Engine Noise or Damage After Oil…
Ask a seller or mechanic if these were done. Some are free under warranty or a special program.
Recalls 3
- Tires · recall issued 2021
The affected tires were cured for too long during production.
- Transmission & drivetrain · recall issued 2020
The start/stop accumulator endcap may have missing bolts.
- Airbags · recall issued 2020
The diffuser component of the Roof-Rail Air Bag (RRAB) inflator may not have been properly crimped to the inflator and could separate from the inflator during air bag deployment.
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 $2,500–$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. 2020 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 2020 bar is highlighted.
<iframe src="https://lemonindex.com/embed/cars/chevrolet-blazer/?y=2020" 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/2020/">Lemon Index</a> (2020 Chevrolet Blazer reliability)</p>Quick answers
Is the 2020 Chevrolet Blazer reliable?
Yes, it is one of the most reliable by government complaints. It drew about a third as many complaints as the average car filed with NHTSA in its first 3 years, per car sold (Lemon Index 34; 100 is average, lower is better).
What are the most common 2020 Chevrolet Blazer problems?
In owner complaints to the government, the parts named most are transmission & drivetrain (39%), electrical (35%) and engine (23%). That is the share of complaints, not the share of cars that break.
How many recalls does the 2020 Chevrolet Blazer have?
3 safety recalls (latest: tires). Recall repairs are free at any dealer; check a specific car's VIN at nhtsa.gov/recalls.
What gas mileage does the 2020 Chevrolet Blazer get?
21 to 24 mpg combined, depending on the engine (EPA estimate).
Is the 2020 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 2020 Chevrolet Blazer have transmission problems?
Transmission and drivetrain issues make up 39% of its owner complaints.
How much does the 2020 Chevrolet Blazer cost in fuel a year?
About $2,500 to $2,850 a year, by the EPA's current estimate.
What engines does the 2020 Chevrolet Blazer have?
2.0L 4-cyl, 2.5L 4-cyl, 3.6L 6-cyl.
Is there a better Chevrolet Blazer year than the 2020?
Not nearby: the 2020 drew the fewest complaints per car sold of the Chevrolet Blazer years within 3 model years of it.
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