What breaks most · 2014 to 2024 model years
Kenworth T680 problems by year
Owners have filed 75 safety complaints with NHTSA about the Kenworth T680 across model years 2014 to 2024. Three years stand out: 2018 for brakes complaints, 2014 for wipers and visibility complaints and 2017 for brakes complaints. The quietest years are 2022, 2016 and 2015.
- Years to check closely: 2018, 2014, 2017
- Fewest complaints: 2022, 2016, 2015
- Complaints on file
- 752014 to 2024, all trims
- Worst year
- 201811 complaints
- Crashes reported
- 311 fires · 2 injuries · 0 deaths
- Typical failure mileage
- 205kMedian where owners gave mileage
- Recall campaigns
- 109Across the years shown
Complaints by model year
Raw filings with NHTSA, not adjusted for how many were sold.
| Model year | Complaints | Crashes | Recalls | Most-reported component |
|---|---|---|---|---|
| 10 | 0 | 13 | Wipers and visibility (4) | |
| 8 | 1 | 11 | Fuel system (2) | |
| 6 | 0 | 16 | Wipers and visibility (1) | |
| 9 | 0 | 11 | Brakes (6) | |
| 11 | 1 | 15 | Brakes (4) | |
| 8 | 0 | 9 | Brakes (3) | |
| 8 | 0 | 8 | Powertrain and transmission (5) | |
| 2 | 0 | 10 | Brakes (1) | |
| 9 | 1 | 9 | Powertrain and transmission (4) | |
| 4 | 0 | 7 | Visibility (1) |
What fails on the 2018 Kenworth T680
| Component | Share of complaints | Filings | Crashes | Parts for this job |
|---|---|---|---|---|
| BrakesBrake pads, rotors and calipers | 36% |
4 | 0 | Shop all brakes parts, not filtered to this vehicle |
| Forward collision systemRadar and camera sensors | 27% |
3 | 0 | Shop all forward collision system parts, not filtered to this vehicle |
| Powertrain and transmissionTransmission parts | 18% |
2 | 0 | Shop all powertrain and transmission parts, not filtered to this vehicle |
| Seat belts | 18% |
2 | 0 | Check recalls for seat belts on NHTSA.gov |
| Wipers and visibilityWiper motors and blades | 9% |
1 | 0 | Shop all wipers and visibility parts, not filtered to this vehicle |
| Unknown or other | 9% |
1 | 0 | — |
| Tires | 9% |
1 | 1 | — |
| Seats | 9% |
1 | 0 | — |
One complaint can name more than one component, so shares add to more than 100%. "Unknown or other" is NHTSA's uncategorized bucket and is shown but never ranked.
In owners' words
Complaint narratives as filed with NHTSA, trimmed for length.
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The air dryer bracket part number G11-6218 was craked and because of that it wasn't secured to the frame. The air dryer was hanging on the airline with the piece of the broken bracket. It is not secured. That is extremely unsafe because it could brake airlines and trucks would lose its brakes.
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The defrost door has broken in this vehicle for a second time. The kenworth design is problematic and even the new parts only fix this for a short time. Driver no longer has defrost when this happens making it an unsafe driving situation. Vehicle was in motion at the time it broke.
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Driver driving down hyway and wheel end started smoking, driver stoped and found haldex brake chamber leaking air causing brake to apply on thier own which resulting in 1 wheel end smoking the brakes changed out brake chamber and all burnt parts
How to read this page
Every figure comes from the National Highway Traffic Safety Administration's public complaint database, which holds every safety-related defect complaint filed by owners since 1995. We refresh it monthly and count each complaint once per component it names. Data through September 6, 2026.
NHTSA only accepts safety-related complaints. Rattles, paint, infotainment bugs and other annoyances are under-reported here, so this page is a map of what fails in ways owners consider dangerous, not a full reliability score.
Counts are raw. Use the year-over-year shape and the component mix, not the absolute numbers. Where a component maps to parts we stock, the row links to that category filtered to the year you are viewing. Air bag and seat belt complaints link to the recall checker instead, because those repairs are almost always covered.
Common questions
Which Kenworth T680 years have the most problems?
By NHTSA complaint volume, 2018, 2014, 2017 carry the most filings on the Kenworth T680. The 2018 alone has 11 complaints, led by brakes.
What is the most common Kenworth T680 problem?
On the 2018 model year, the most-reported component is brakes with 4 complaints. The table above lists the top components for every year.
At what mileage do Kenworth T680 problems start?
The median mileage at failure across all Kenworth T680 complaints that include mileage is about 205,000 miles. Older model years skew higher; the per-year figure is in the "at a glance" card.
Are these complaints verified?
No. NHTSA publishes complaints as submitted and does not investigate individual filings. Patterns across hundreds of complaints are meaningful; a single one is not.