2019 Kenworth T680 Fuel system Problems
- Complaints
- 2about this part
- Share
- 25%of 8 total for the year
- Median mileage
- 40miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the fuel system of the 2019 Kenworth T680, 25% of the 8 complaints for this model year. Where a mileage was given, the median is 40 miles.
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.
“My father was fueling this brand new truck with cng (compressed natural gas) when one of the tanks exploded. The truck was stationary at the ang (american natural gas) station in buttonwillow california at the intersection of interstate 5 and hwy 58. My father is in critical condition at the icu in ucla with multiple broke bones as well as bleeding and swelling on his brain. I have attached a photo of the truck.”
NHTSA complaint #11164528, filed 2019-01, 40 miles“The contact owns a 2019 Kenworth T680. The contact stated while driving 75 MPH, there was an abnormal popping noise detected and the vehicle decelerated and the fuel system detached from the vehicle. The vehicle was towed to an independent mechanic and the contact was informed that the pump bolt had fractured. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not notified. The approximate failure mileage was 432,549.”
NHTSA complaint #11469311, filed 2022-06Related service bulletins
- 11032291Apr 17, 2026KW & PB DEF Quality Sensor part number Q21-6127-001 for PACCAR PX-7 and Cummins X15 engines has been added to this warranty policy.
- 10232496Feb 24, 2023Certain Model Year 2021-2024 chassis with PACCAR MX engines and optional fuel filter restriction virtual gauge may display incorrect restriction levels. The virtual gauge will be…
- 10201965Sep 21, 2021Fix-As-Fail â Due to undersupply issues, only a limited supply of Diesel Exhaust Fluid (DEF) sensors are available. As a temporary solution, after PACCAR confirms a DEF sensor…
Fuel system: other model years
Other parts of the 2019 Kenworth T680
3 complaintsOther or unknown
2 complaintsBody and structure
2 complaintsTransmission and drivetrain
2 complaintsElectrical system
1 complaintsEngine
1 complaints
← All problems reported for the 2019 Kenworth T680
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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