Reliability, what owners report, and what it costs to keep.
AVOIR's read: running costs are the problem rather than the car itself.
Owners have filed 189 complaints with NHTSA about the 2021 Chevrolet Suburban, and it carries 12 recalls. These are owner allegations rather than confirmed defects, but the pattern of what people complain about is the most useful signal a used buyer has.
| Area | Complaints | Share |
|---|---|---|
| Engine | 58 | 31% |
| Power train | 25 | 13% |
| Fuel/propulsion system | 16 | 8% |
| Exterior lighting | 7 | 4% |
| Fuel system | 6 | 3% |
| Engine and engine cooling | 6 | 3% |
| Power train | 4 | 2% |
| Electrical system | 3 | 2% |
| Unknown or other | 3 | 2% |
| Service brakes | 3 | 2% |
Verbatim from NHTSA complaint records, trimmed for length.
This vehicle has been towed approximately 7 times in the last year. For all instances in [XXX] in 2025, the dealership told us there were no issues. The completed the recall on the L87 and it 'passed'. The dealership the
NHTSA complaint: Engine
Another 6.2 Liter Engine Failure in a 2021 Chevrolet Suburban that is not included in the original Recall affecting 2021 Suburbans Starting March of 2021 this on was purchased in Dec. of 2020.
NHTSA complaint: Engine
My engine was initially part of the 6.2L v8 engine recall. The dealer cleared my engine after inspecting it and told me my engine was not affected, but that I had to use corvette engine oil. After my 3rd corvette engine
NHTSA complaint: Engine
While coming to a stop on a highway, the engine started running very rough, shaking the vehicle constantly, and the check engine light came on and the ESC failure notice came on. We brought it to an independent repair s
NHTSA complaint: Engine
The contact owns a 2021 Chevrolet Suburban. The contact stated that while driving approximately 40 MPH, the vehicle failed to accelerate as needed. The contact was able to coast to the side of the road, and the vehicle w
NHTSA complaint: Fuel system
Fuel pulp module failed on highway. Was told there is not a recall on my VIN even tho online there is a recall and known issue for the part
NHTSA complaint: Fuel system
The contact owns a 2021 Chevrolet Suburban used to tow a 30-foot trailer. The contact stated that while towing the trailer and driving 60 MPH up an incline with no shoulder, the vehicle shut off in a remote area. The con
NHTSA complaint: Engine and engine cooling
The contact owns a 2021 Chevrolet Suburban. The contact stated that while driving on the highway, the vehicle experienced reduced engine power and failed to exceed 30 MPH. A message pertaining to the deceleration was dis
NHTSA complaint: Fuel system
NHTSA lists 12 recall campaigns for the 2021 Chevrolet Suburban. Recalls are free to have fixed at a franchised dealer regardless of who owns the car now, but only if they were never done, so check the VIN of the specific car rather than trusting the model.
General Motors, LLC (GM) is recalling certain 2021 Cadillac Escalade, Escalade ESV, Chevrolet Suburban, Chevrolet Tahoe, GMC Yukon, and Yukon XL vehicles. A software issue may cause a loss of power steering assist at startup or while driving.
Risk: Increased steering effort, particularly at lower speeds, increases the risk of a crash.
Fix: The power steering module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters were mailed July 13, 2021. Owners may contact Chev
General Motors, LLC (GM) is recalling certain 2021 GMC Yukon, Yukon XL, Cadillac Escalade, Escalade ESV, Chevrolet Suburban, and Chevrolet Tahoe vehicles. The rear wheel driveshaft assemblies may have internal components that were not heat-treated properly, possibly resulting in driveshaft failure.
Risk: 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 1-80
General Motors, LLC (GM) is recalling certain 2019-2021 Chevrolet Silverado 1500 and GMC Sierra 1500, 2021 Chevrolet Suburban and Tahoe and GMC Yukon XL and 2020-2021 Chevrolet Silverado 2500 and 3500 and GMC Sierra 2500 and 3500 vehicles. The seat belt brackets may not be secured to the seat fram
Risk: If a seat-belt bracket is not secured, the seat belt may not properly restrain an occupant in the front-row center seat position, increasing the risk of injury in a crash.
Fix: GM will notify owners, and dealers will inspect left-side and right-side front-row center seat-belt bracket attachments and reassemble it correctly as necessary, free of charge. The recall began Janu
General Motors, LLC (GM) is recalling certain 2020 Chevrolet Bolt EV and 2021 GMC Canyon and Sierra 1500, 2500 and 3500, Yukon, Yukon XL, Cadillac Escalade and Escalade ESV and Chevrolet Blazer, Camaro, Colorado, Equinox, Silverado 1500, 2500 and 3500, Suburban and Tahoe vehicles. Incorrect bolts m
Risk: 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.
Fix: GM will notify owners, and dealers will replace the suspect bolts, free of charge. The recall began January 29, 2021. Owners may contact GMC customer service at 1-800-462-8785, Cadillac customer ser
| Reliability raw | 75 | good |
|---|---|---|
| Longevity est. | 75 | good |
| Maintenance | 57 | average |
| Depreciation | 65 | good |
| Performance | 76 | good |
| Efficiency | 29 | below average |
| Safety | 73 | good |
Percentile ranks against other SUVs in the catalog.
What stands behind each score for this car:
Owners have filed 189 complaints with NHTSA for this model-year, and engine is the most reported area with 58 of them (31%). There are 12 recalls on record. Check any specific car against its VIN before buying.
AVOIR scores its reliability 75/100 (good) from NHTSA recall campaigns and complaint density. That figure is a raw complaint count, not yet adjusted for sales volume, so a high-volume model scores worse than it deserves.
AVOIR scores its longevity 75/100, but that figure is an estimate built from the powertrain and the brand's record, not a measurement. A 2021 car has no 200,000-mile population to observe yet, so treat it as a prior rather than evidence.
AVOIR's read: skip unless cheap, because running costs are the problem rather than the car itself. Its overall ownership score is 66/100. Condition, mileage and service history still matter more than any score, so get a pre-purchase inspection on the specific car.
Sources: NHTSA recalls and complaints, EPA fuel economy, IIHS awards, and live market listings. A score describes a model-year, not the individual car in front of you. Get a pre-purchase inspection.