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O Trucking
NHTSA Owner Complaints

2021 Freightliner Cascadia

16 owner-reported issues

Owner-reported data
Total complaints
16
Crash reports
1
Fire reports
0
Open recalls
4

What this means

16 NHTSA complaints filed on 2021 Freightliner Cascadia. Light sample — pattern recognition is limited but specific complaints may still be useful. The dominant complaint patterns are: TIRES (38%), FORWARD COLLISION AVOIDANCE (19%), STEERING,SUSPENSION (6%). These three categories cover 63% of all reports — typical signal that there are 2-3 known systemic issues on this make/model/year, not random faults.

Top reported issues
  • #1TIRES
    6 (38%)
  • #2FORWARD COLLISION AVOIDANCE
    3 (19%)
  • #3STEERING,SUSPENSION
    1 (6%)
  • #4UNKNOWN OR OTHER,SERVICE BRAKES,ENGINE
    1 (6%)
  • #5SERVICE BRAKES,FORWARD COLLISION AVOIDANCE
    1 (6%)
  • #6STEERING,ELECTRICAL SYSTEM,SERVICE BRAKES
    1 (6%)
  • #7STRUCTURE,VISIBILITY
    1 (6%)
  • #8SUSPENSION,FORWARD COLLISION AVOIDANCE
    1 (6%)
  • #9ELECTRICAL SYSTEM
    1 (6%)
Recent complaint examples
FORWARD COLLISION AVOIDANCE0000-00-00

While vehicle approached a hazard blocking the roadway the forward collision and automatic braking feature did not engage; apparently due to the vehicle sensors not recognizing the hazard. The object in the roadway was a 53 ft van trailer that was laid on it's side with the trans…

CrashInjuries
STEERING,ELECTRICAL SYSTEM,SERVICE BRAKES0000-00-00

When driving, there is a constant and very strong vibration throughout the entirety of the truck. This makes it difficult to steer and drive in a safe manner. I've replaced any parts that might be associated with this malfunction with brand new parts at the advice of professional…

UNKNOWN OR OTHER,SERVICE BRAKES,ENGINE0000-00-00

My Emplyoer has not fixed anything on the truck, the truck shouldn’t be operating, doesn’t meet DOT Regulations, I was told not to go into any scales or weigh stations, loses air and the air doesn’t build back up properly, I lost all air in my breaks while driving on the r…

FORWARD COLLISION AVOIDANCE0000-00-00

I'd like to report the automatic braking device on our company semi tractor. I work for a large mega carrier hauling all types of freight, with triples and doubles combination trailers. We operate with Freightliners, Kenworths, and Internationals. The tractor tractor I use is a 2…

FORWARD COLLISION AVOIDANCE0000-00-00

The contact owns a 2021 Freightliner Cascadia. The contact stated while driving 65 MPH with the cruise control activated, the brakes applied independently. The contact took the vehicle to the local dealer, where it was diagnosed with needing the calibration of the radar. The vehi…

SUSPENSION,FORWARD COLLISION AVOIDANCE0000-00-00

This complaint is being filed in addition to my previous complaint which is complaint #1147128511471285. Both left and right vehicle airbag suspension height regulators were just replace a month ago, and once again, the right side airbag ride height regulator has blown apart, ca…

TIRES0000-00-00

TIRE SIZE: 275/80 R22.5 MICHELIN ENERGY LINE Z Component that failed is drivers side steer front tire. The tire blew out and resulted in loss of vehicle control. This failure DID cause an accident putting others safety at risk. Both Freightliner Corp. and Michelin Tire Co. are …

TIRES0000-00-00

TIRE SIZE: 275/80 R22.5 MICHELIN ENERGY LINE Z Component that failed is the passenger side steer front tire. The inside edge decoupling groove failed. Risks include a potential tire blow resulting in loss of vehicle control. This failure could cause an accident putting others…

Related

Frequently Asked Questions

Are these Freightliner Cascadia 2021 complaints verified by NHTSA?
NHTSA collects complaints from owners but does NOT verify each one. The complaints below are unfiltered owner reports — useful for spotting patterns, but a single complaint doesn't prove a defect. Pay attention to: (1) volume of complaints on the same component, (2) consistency of described symptoms, and (3) whether NHTSA has opened a formal investigation or issued a recall on the same component. If a component appears in 5+% of complaints, that's usually a real pattern worth taking seriously.
Should I avoid buying a 2021 Freightliner Cascadia based on these complaints?
It depends on the components reported. 16 complaints across roughly tens of thousands of trucks of this model year is a light signal. Compare against other model years of the same truck — if 2022 has 3x more complaints than 2020 or 2024, that specific year has issues. Also check whether the most-reported component is something you can preventively address (e.g., DEF system issues can be mitigated with quality fluid + dealer software updates).
Have any of these complaints led to recalls on the 2021 Freightliner Cascadia?
Yes — 4 NHTSA recalls have been issued for this make/model/year. Owner complaints are one of the inputs NHTSA uses to identify potential safety defects — when a pattern shows up in complaints, an investigation can open, and if a defect is confirmed, a recall is issued. See the recall page for this vehicle for details.
How do I file my own complaint about a Freightliner truck?
Visit NHTSA.gov/file-complaint. You'll need: your VIN, the date of incident, description of what happened, and component affected (drivetrain, brakes, etc.). Filing takes ~10 minutes and adds your data point to the public record. This is the input that triggers NHTSA investigations. For commercial trucks, fleet operators reporting issues at scale (10+ similar reports) often accelerate NHTSA's review timeline.
What's the most expensive complaint pattern on the 2021 Freightliner Cascadia?
Based on the complaint data: the top reported issue is 'TIRES' with 6 reports. Depending on the specific failure mode, this can range from a few hundred dollars (sensor replacement) to several thousand (transmission rebuild, DPF replacement, engine work). The complaint pattern alone won't tell you cost — check the symptoms described for hints about the actual root cause. Most commercial-truck complaints describe symptoms ($1,500–$5,000 repair range is typical), not catastrophic failures.

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