2021 Freightliner Cascadia Forward collision avoidance Problems
- Complaints
- 5about this part
- Share
- 31%of 16 total for the year
- Median mileage
- 215,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the forward collision avoidance of the 2021 Freightliner Cascadia, 31% of the 16 complaints for this model year. Where a mileage was given, the median is 215,000 miles. 1 of these say a crash was involved, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Without warning an Automatic breaking event occurred and the tractor slammed on its breaks while on open road with no one near on a sunny day. I was bobtailing south.. That event caused my AEB system to disable itself and I also lost cruise control. The funny thing is even after the system is disabled I’m still having automatic breaking events around curves..”
NHTSA complaint #11765034, filed 2026-09“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 2021 Freightliner equipped with a safety feature, an automatic braking system to avoid collisions for stopped or slowed traffic ahead. The issue is, it randomly brakes with no obstructions ahead. I've seen reports that you guys are looking into this. …”
NHTSA complaint #11529649, filed 2023-06“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 translucent roof facing the approaching vehicle.”
NHTSA complaint #11569193, filed 2024-02“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 vehicle was repaired but experienced the failure within a week. The contact took the vehicle back to the local dealer, where it was diagnosed with needing the radar to be replaced. The vehicle was repaired but continued to experience the same failure within a month. …”
NHTSA complaint #11524581, filed 2023-05, 215,000 milesRelated service bulletins
- 11035536Jul 21, 2026Truck Equipment Manufacturer upfit guide for Detroit Assurance Forward Radar Relocation and Adjustment
- 11024978Oct 29, 2025Features and Benefits for SafetyDirect 5.1
- 10210557Apr 25, 2022Service Solution for Cummins Engine andWABCO OnGuard (Obtaining Cruise When AdaptiveCruise Is Interrupted). Interruption of the forward radar system results in loss of both…
Forward collision avoidance: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2024 | 8 | 57% |
| 2023 | 5 | 42% |
| 2022 | 6 | 46% |
| 2021 | 5 | 31% |
| 2020 | 11 | 42% |
| 2019 | 10 | 34% |
| 2018 | 2 | 18% |
| 2017 | 1 | 11% |
| 2016 | 1 | 8% |
| 2014 | 1 | 8% |
Other parts of the 2021 Freightliner Cascadia
6 complaintsBrakes
3 complaintsElectrical system
2 complaintsSteering
2 complaintsSuspension
2 complaintsEngine
1 complaintsOther or unknown
1 complaintsBody and structure
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 2021 Freightliner Cascadia
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology