2018 KENWORTH T680 Problems

Complaints Reported

Complaints by Component

SERVICE BRAKES

3 complaints

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.

Jul 21, 2022

UNIT DRIVING ON FLAT ROAD, LEFT FRONT DRIVES STARTED SMOKING WHILE DRIVING ON INTERSTATE BRAKES NOT BEING APPLIED, DRIVER STOPPED AND BY THIS TIME THE FIRE HAD SPREAD THRU THE UNDER SIDE OF TRUCK AND TRAILER, TOTAL LOSS OF TRUCK, TRAILER AND LOAD, BELIVED TO BE HALDEX BRAKE CAN FAILURE LEAKING AIR AND CAUSING BRAKES TO DRAG AND START ON FIRE

Jan 13, 2019

Fire: 1

THE MITIGATION SYSTEM CAUSES A 'HARD BRAKING' EVENT TO OCCUR. CAN BE TRIGGERED BY AN OVERPASS, CONSTRUCTION ZONES, TRUCK IN ANOTHER LANE, ETC. USUALLY OCCURS ON HIGHWAYS WHILE AT OUR TOP SPEED OF 65 MPH. IT WILL CAUSE A HARD BRAKE DOWN TO 45 MPH. CAN OCCUR DURING NIGHT OR DAYTIME.

Jul 19, 2018

FORWARD COLLISION AVOIDANCE

2 complaints

AUTOMATIC EMERGENCY BRAKING IS AN ABSOLUTE DANGER TO THE MOTORING PUBLIC AND NEEDS TO BE ELIMINATED IMMEDIATELY. I AM SICK AND TIRED OF ENGINEER'S WHO DON'T KNOW THEIR ASS FROM A HOLE IN THE GROUND DESIGNING BULLSHIT THAT DOESN'T WORK. FAR TOO MANY FALSE RADAR RETURNS AND UNWANTED HARD STOPS TO BE OF ANY USE. I DO NOT OWN THIS VEHICLE BUT IF I DID THE FIRST THING I WOULD DO RIGHT AFTER I PULL THE FUSE FOR THE LANE DEPARTURE WARNING WOULD BE TO ISOLATE AND BYPASS AEB. THIS WILL BE DONE ON ANY VEHICLES I PURCHASE IN THE FUTURE AND I DO NOT CARE WHAT THE LAW STATES ABOUT DOING SO

May 04, 2021

TL* THE CONTACT OWNS A 2018 KENWORTH CONSTRUCT T680. WHILE DRIVING THROUGH SNOW OR ICE, THE VEHICLE'S ADAPTIVE CRUISE CONTROL WOULD FLASH AS IF THE VEHICLE WERE APPROACHING SOMETHING AND ACTIVATED BY STOPPING THE VEHICLE IN ORDER TO PREVENT A CRASH. THE CONTACT STATED THAT THE FAILURE ONLY OCCURRED DURING THIS TYPE OF WEATHER EVEN WHEN THERE WERE NO OTHER VEHICLES OR OBJECTS NEARBY. THE CONTACT SPOKE WITH THE KENWORTH HOTLINE FOR VEHICLE BREAKDOWNS WHO STATED THAT THEY DID NOT CONSIDER THIS A FAILURE. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE ISSUE. THE APPROXIMATE FAILURE MILEAGE WAS 292,000.

Oct 01, 2019

TIRES

1 complaint

See attached document for complaint.

Apr 17, 2025

Crash: 1

POWER TRAIN,ELECTRICAL SYSTEM,ENGINE

1 complaint

We bought this truck with 401, 000 miles on it. So far we have had to replace the rear ends twice. the whole DPF system, the check engine light still on since the day we bought the truck. We have had 5 NOS sensors put into the truck, 6 input and output sensors put into the truck. This truck has been defective since the day of purchase. We keep having the same error code of p3770 come up evetime we take to shop. The error code has been looked at so many times that even the master techs don't know what is wrong with the truck other then we keep replacing the same stuff over and over again.

Apr 25, 2023

UNKNOWN OR OTHER,SERVICE BRAKES,FORWARD COLLISION AVOIDANCE

1 complaint

I started the truck after not driving for 1 day and a heavy rain storm the day prior. I attempted to drive bobtail when the brakes locked up. The traction control light came on then went back off. Then the adaptive cruise control notification came on. The regon came on then went back off. A speedometer sign with an exclamation mark came up and would not go away. After attempting to go down the road the brakes continued to lock up, would not release and caused the rear passenger tires to go bald and lose my job.

Jun 15, 2021

SEAT BELTS,SEATS,VISIBILITY/WIPER

1 complaint

Seat belt frame cover was cracked and seat belt would not retract. The other side was broken as well with casing coming off. I was in the middle of backing for a delivery and the driver seat retract would not stay in place and the seat kept folding forward causing me to not be able to back the truck. I was told this is due to obese drivers causing the seat to break. Also during the time of my brake issue where are the brakes locked up and on several other occasions the air brake lost pressure for no reason.

Jun 15, 2021

POWER TRAIN

1 complaint

UNIT HAD CLUTCH FAILURE FAILED TO DISENGAGE UNDER 18E-102, PER FEDERAL GUIDLINES IT FALLS UNDER THE CLUTCH RANGE OF AU1704192065 AND FALLS UNDER EATONS ORIGINAL CAMPAIGN RELEASE BUT THEY REVISED IT TO WHERE IT DOES NOT COVER THIS ONE BECUASE NOW THEY CHANGED THE RANGE TO AU1711 THRU AU1804 BUT WE ARE SEEING A LOT OF FAILURE BELOW AU1711, WHY DOES EATONS DOCUMENT NOT MATCH THE FEDERAL DOCUMENTS? AND WHY ARE WE SEEING THESE CLUTCH FAILURES ON TRUCKS THAT WERE REVISED AND SAID TO NOW BE GOOD, BUT THEY ARE FAILING IN THE SAME MANNER

Nov 01, 2020

SEAT BELTS

1 complaint

SEAT BELT ALARM NEVER TURN OFF EVEN IF I HAVE MY SEAT BELT ON

Nov 04, 2018

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4.6/5.0

49 reviews

Frequently Asked Questions

How many problems does the 2018 KENWORTH T680 have?

The 2018 KENWORTH T680 currently has 11 owner-reported complaints according to NHTSA database. These complaints are organized by component to help identify common issues.

What are the most common problems with 2018 KENWORTH T680?

The most common problems reported for the 2018 KENWORTH T680 are organized by component above. Each component section shows owner-reported issues, crash reports, and fire incidents to help identify patterns and problem areas.

Where does this 2018 KENWORTH T680 problem data come from?

All problem and complaint data for the 2018 KENWORTH T680 comes directly from the National Highway Traffic Safety Administration (NHTSA) database. These are real complaints submitted by actual vehicle owners.