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ProblemsByVinFile / 2021-CHEVROLET-SUBURBANNHTSA data synced 4 days ago
Chevrolet
2021 Chevrolet Suburban problems
The 2021 Chevrolet Suburban has 179 NHTSA owner complaints and 8 active recall campaigns on file. Here's the breakdown — what's serious, what's noise, and what a working mechanic would actually do about it.
The 2021 Chevrolet Suburban has 179 NHTSA owner complaints and 8 recalls on file (U.S. federal records, as of July 2026). The most-reported system is engine at 65 complaints, typically surfacing around 76,042 miles (~$3,100 to repair). Source: NHTSA Office of Defects Investigation.
Average for the segment. Some recurring trouble spots worth knowing about.
0
Critical
8
Severe
0
Moderate
Should you avoid this 2021 Suburban?
Acceptable — with caveats
Worth owning if you verify the specific issues below before you buy.
Reliability score 6.0/10 — around the segment average
8 recall campaigns on file
Our read of the federal NHTSA complaint and recall record for this exact year and model —
not a substitute for a pre-purchase inspection. How we score.
NHTSA crash-test safety ratings
4 / 5 overall
Overall★★★★★4/5
Frontal crash★★★★★4/5
Side crash★★★★★5/5
Rollover★★★★★3/5
Driver-assist features on the tested model:
Electronic stability control: Standard · Forward collision warning: Standard · Lane departure warning: Optional
Source: NHTSA New Car Assessment Program — tested configuration: 2021 Chevrolet Suburban SUV 4WD. Stars rate crash protection in NHTSA's tests, not overall reliability — see the owner-complaint data below for what actually goes wrong.
Buying a used 2021 Chevrolet Suburban? Check these first
Here's what this model is known to do — so you can inspect for it, price it in, or
make the seller fix it before you sign.
What to inspect on this specific car
engine — 65 owner reports
· tends to show around 76,042 mi · ~$3,100 to fix
powertrain — 33 owner reports
· tends to show around 78,200 mi · ~$2,500 to fix
electrical — 12 owner reports
· tends to show around 88,000 mi · ~$850 to fix
brakes — 7 owner reports
· tends to show around 30,000 mi · ~$450 to fix
⚠ The one to take seriously: electrical is flagged
severe on this model
, showing up around 88,000 mi.
Inspect it closely on a test drive.
Recalls to confirm are done
Run the VIN from the listing — 8 active recalls on this model. Recall repairs are always free.
Verdict for buyers: 6.0/10 model. The priciest documented failure is
engine (~$3,100) — get the
seller's service records for it or inspect closely. Otherwise an average-risk used buy at a fair price.
We tell you what this model is known for and what to inspect — a vehicle-history report
tells you what this exact car has been through. Smart buyers get both.
A noise, a warning light, a repair quote, "should I buy this?" — get an answer grounded in
this vehicle's actual NHTSA record, not generic advice.
Dash light, leak, worn part — snap it and we'll read it against this car's record.
Photo attached — type a question or just hit Ask.
Answers use this vehicle's NHTSA complaint & recall record — owner-reported and unverified, not a diagnosis. Verify anything safety-critical with a mechanic.
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What owners are saying
recent NHTSA-filed complaints · verbatim
2021 Suburban· engine
The car was driving at 60 MPH on a regular commute to work and the car was stalling and shaking and soon after the check engine light came on with multiple issues.
The contact owns a 2021 Chevrolet Suburban. The contact stated while driving 45-55 MPH, the vehicle lost motive power inadvertently. There was no warning light illuminated. The contact was able to veer to the side of the road. The vehicle failed to restart and was towed to the…
The contact owns a 2021 Chevrolet Suburban. The contact stated while driving 45 MPH, the driver’s side low-beam headlight was pointing inward, affecting his visibility of the roadway. The contact stated that the failure later occurred with the passenger’s side low-beam…
Vehicle experienced sudden engine malfunction including rough idle, hard misfire, and flashing check engine light. Vehicle was diagnosed with a collapsed lifter and internal engine failure. Metallic debris was found in the engine oil, including silver and gold/bronze particles…
Had a problem with your 2021 Chevrolet Suburban?
File a complaint with NHTSA → It's free and official — owner filings are what build the federal safety record behind this page.
Estimate your repair exposure
Drag to your current mileage. Numbers are derived from this vehicle's complaint history.
General Motors, LLC (GM) is recalling certain 2020-2022 Chevrolet Silverado 1500, 2500, 3500, GMC Sierra 1500, 2500, 3500, 2021 Cadillac Escalade, Escalade ESV, Chevrolet Tahoe, Suburban, GMC Yukon, and Yukon XL vehicles equipped with diesel engines
Rear wheel lock-up can increase the risk of a crash.
Fix: Dealers will install new transmission control module software, free of charge. GM will provide a special coverage program to cover the repair of transmissions that are identified by the remedy software as containing a defective control valve. Owner notification letters were mailed December 12, 2024. Owners may contact GM customer service at 1-888-988-7267, Cadillac customer service at 1-800-458-8006, GMC customer service at GMC 1-800-462-8782 or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N242454440.
General Motors, LLC (GM) is recalling certain 2021 Yukon, Yukon XL, Chevrolet Tahoe, Chevrolet Suburban, Cadillac Escalade, and Cadillac Escalade ESV vehicles
Daytime Running Lights that do not deactivate as intended may cause a glare, reducing visibility and increasing the risk of a crash.
Fix: Dealers will provide an over-the-air (OTA) update for the Body Control Module software, free of charge. Owner notification letters were mailed December 15, 2022. Owners may contact GM customer service at 1-888-988-7267, Chevrolet customer service at 1-800-222-1020, or Cadillac customer service at 1-800-458-8006. GM's number for this recall is N222382220.
General Motors, LLC (GM) is recalling certain 2021 GMC Yukon, Yukon XL, Cadillac Escalade, Escalade ESV, Chevrolet Suburban, and Chevrolet Tahoe vehicles
Driveshaft failure can cause a sudden loss of drive power, increasing the risk of a crash.
Fix: Dealers will replace the left and/or right rear driveshaft assemblies, free of charge. Owner notification letters were mailed on March 14, 2022. Owners may contact Chevrolet customer service at 1-800-222-1020; Cadillac customer service at 1-800-458-8006 or GMC customer service at 1-800-462-8782. GM's number for this recall is N212351030.
It's got known weak points. With a reliability score of 6.0 out of 10 based on 179 owner complaints filed with NHTSA, the 2021 Chevrolet Suburban has a higher-than-average rate of reported issues. The areas to watch are listed above. Whether it's worth owning depends on price, condition, and how much repair exposure you can absorb.
Should you avoid the 2021 Chevrolet Suburban?
The 2021 Chevrolet Suburban is acceptable, with specific caveats. Worth owning if you verify the specific issues below before you buy. The record behind that call: Reliability score 6.0/10 — around the segment average; 8 recall campaigns on file. This is our read of the federal complaint and recall data — not a substitute for a pre-purchase inspection.
What should I check before buying a used 2021 Chevrolet Suburban?
Inspect the engine first — it's the most-reported issue on this model, with 65 owner complaints filed. Typical failure occurs around 76,042 miles. Average repair cost runs about $3,100 at an independent shop. Also confirm any open recalls have been completed by running the VIN, and ask for service records covering the problem areas listed above.
Is the 2021 Chevrolet Suburban a good used car to buy?
It scores 6.0 out of 10 on our NHTSA-based read of 179 owner complaints. The main thing to watch is engine. Typical failure occurs around 76,042 miles. Priced fairly and clean on inspection, it's a reasonable used buy. Our data covers what this model is known for — pair it with a vehicle-history report on the VIN to see what that specific car has been through.
What's the most common problem on the 2021 Chevrolet Suburban?
Based on NHTSA records, the most-reported issue is engine, with 65 complaints filed. Typical failure occurs around 76,042 miles. Average repair cost runs about $3,100 at an independent shop.
What's the most expensive thing that goes wrong?
The engine is one of the costlier repair items. Average repair cost runs about $3,100 at an independent shop. Typical failure occurs around 76,042 miles. Catching early warning signs can sometimes extend life by 20–30,000 miles.
How do I check if my Chevrolet Suburban has open recalls?
Paste your VIN into the decoder at the top of this page. We pull live from NHTSA, so you'll see exactly which campaigns apply to your vehicle and whether the dealer has logged the fix. Recall repairs are always free regardless of mileage or warranty status.
Is an extended warranty worth it on a 2021 Chevrolet Suburban?
Math is straightforward: a quality service contract runs $1,800–3,500 over 3 years. With 179 complaints on file and the costliest repair averaging $3,100, one major failure more than pays for it. The catch is reading the contract — many providers exclude wear items and require pre-authorization, so cheaper plans are not always better value.
Recall and complaint data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database, last synced 4 days ago. Verify the raw federal record at
nhtsa.gov/vehicle/2021/Chevrolet/Suburban.
Editorial commentary written by ProblemsByVin contributors and reviewed by ASE-certified mechanics.
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