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The 2021 Chevrolet Trailblazer has 187 NHTSA owner complaints and 4 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 Trailblazer has 187 NHTSA owner complaints and 4 recalls on file (U.S. federal records, as of August 2026). The most-reported system is powertrain at 38 complaints, typically surfacing around 33,760 miles (~$2,500 to repair). Source: NHTSA Office of Defects Investigation.
| Model year | Owner complaints | Recalls |
|---|---|---|
| 2021 Trailblazer (this page) | 187 | 4 |
| 2022 Trailblazer | 105 | 1 |
| 2023 Trailblazer | 62 | 0 |
| 2024 Trailblazer | 32 | 0 |
Average for the segment. Some recurring trouble spots worth knowing about.
The data says walk unless this exact vehicle has documented proof the powertrain was repaired or replaced.
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.
Driver-assist features on the tested model: Electronic stability control: Standard · Forward collision warning: Standard · Lane departure warning: Standard
Source: NHTSA New Car Assessment Program — tested configuration: 2021 Chevrolet Trailblazer SUV FWD Later Release. Stars rate crash protection in NHTSA's tests, not overall reliability — see the owner-complaint data below for what actually goes wrong.
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.
⚠ The one to take seriously: powertrain is flagged severe on this model , showing up around 33,760 mi. Inspect it closely on a test drive.
Run the VIN from the listing — 4 active recalls on this model. Recall repairs are always free.
Verdict for buyers: 6.6/10 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.
See the full pre-purchase inspection checklist →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.
Answers use this vehicle's NHTSA complaint & recall record — owner-reported and unverified, not a diagnosis. Verify anything safety-critical with a mechanic.
I have brought my car into the dealership over the last few years at least 6 times for the same issues. Currently there are two codes coming up as permanent on my car which is for the Evaporative Emission System Flow and Brake Booster Hydraulics performance. I drive my child of…
I have had this vehicle at the garage for the 4th time in 2 months for the same issues. It would not start. the fuse box keeps blowing. The starter was replaced and the Alternator was replaced and the fuse box 3 times so far. It is in the auto repair shop now for the same…
After trying to remove rhe key from ignition, it gets stuck and won't come out unless I turn the car on, shift it into drive, wiggle the steering wheel, and try it again. Sometimes it works. Alot of times it take 5-10 min to get it out.
I have had multiple issues with the car since I've purchased it. The brakes continuously make noise, and the automatic Emergency Braking DOES not work. The tire pressure sensors don't work, they have the wrong tire pressure for each tire, and the tires constantly over inflate.…
Drag to your current mileage. Numbers are derived from this vehicle's complaint history.
A fractured jack can cause the vehicle to collapse, increasing the risk of injury.
If communication with the sensor is interrupted, the electronic brake boost assist could be lost. Extra pedal force will be required to slow and stop the vehicle, increasing the risk of a crash.
If an occupied front seat is missing the rear attachment bolts, it may move during a crash, increasing risk of injury to the occupant.
It's got known weak points. With a reliability score of 6.6 out of 10 based on 187 owner complaints filed with NHTSA, the 2021 Chevrolet Trailblazer 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.
On the NHTSA data, the 2021 Chevrolet Trailblazer is one to avoid unless a specific vehicle proves otherwise. The data says walk unless this exact vehicle has documented proof the powertrain was repaired or replaced. The record behind that call: Powertrain: 38 complaints, classified severe, failures cluster 20,000–40,000 mi; Electrical system: 32 complaints, classified severe; Reliability score 6.6/10 — around the segment average; 4 recall campaigns on file. This is our read of the federal complaint and recall data — not a substitute for a pre-purchase inspection.
Inspect the powertrain first — it's the most-reported issue on this model, with 38 owner complaints filed. Typical failure occurs around 33,760 miles. Average repair cost runs about $2,500 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.
It scores 6.6 out of 10 on our NHTSA-based read of 187 owner complaints. The main thing to watch is powertrain. Typical failure occurs around 33,760 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.
Based on NHTSA records, the most-reported issue is powertrain, with 38 complaints filed. Typical failure occurs around 33,760 miles. Average repair cost runs about $2,500 at an independent shop.
The powertrain is one of the costlier repair items. Average repair cost runs about $2,500 at an independent shop. Typical failure occurs around 33,760 miles. Catching early warning signs can sometimes extend life by 20–30,000 miles.
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.
Math is straightforward: a quality service contract runs $1,800–3,500 over 3 years. With 187 complaints on file and the costliest repair averaging $2,500, 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.