repaired · 2026 Q2
Supply: reservoir/tank
Risk. Insufficient air volume can reduce braking performance and increase the risk of a crash.
2011 Kenworth T660Problems, recalls & complaints
NHTSA has logged 1 owner complaint about the 2011 Kenworth T660, most often about the service brakes. It is covered by 13 safety recalls, and for recall 24V-145 the manufacturer reports only 24% of affected cars repaired.
Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through February 23, 2024. Updated daily.
Complaints by system
Where the 2011 Kenworth T660 has problems
1 complaint grouped by the system owners reported.
1Service brakes
| System | Complaints | Crash, fire or injury |
|---|---|---|
| Service brakes | 1 | 0 |
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
13 recalls
2011 Kenworth T660 recalls and how many were fixed
Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.
repaired · 2022 Q1
Electronic stability control (ESC)
Risk. If the driver unknowingly operates the vehicle without the ABS functioning, there would be an increased risk of a crash.
repaired · 2016 Q4
Exterior lighting: hazard flashing warning lights
Risk. If the hazard warning lamps are overridden by the DRL, oncoming vehicles may fail to be warned, increasing the risk of a crash.
repaired · 2016 Q4
Windshield wiper/washer: motor
Risk. As water leaks in, the wiper may cease to function on the 'intermittent' setting, reducing the driver's visibility and increasing the risk of a crash.
Show 9 more recalls
no report yet
Electrical system: software
Risk. IF THE FAST IDLE CONTROL FUNCTION IS ENGAGED WITH THE TRANSMISSION IN GEAR, THE VEHICLE COULD UNEXPECTEDLY ACCELERATE AND OVERRIDE THE PARKING BRAKE AND,…
no report yet
no report yet
Service brakes, air: slack adjusters
Risk. IF THE SLACK ADJUSTER HOUSING WERE TO FRACTURE, THE WHEEL BRAKE TO WHICH THE SLACK ADJUSTER HOUSING IS ATTACHED WOULD NO LONGER FUNCTION, WHICH COULD INCREASE…
no report yet
Storage: tank assembly
Risk. THE DISCHARGE OF ENGINE OIL ONTO EXHAUST COMPONENTS WHICH ARE HOT, SUCH AS WHEN THE ENGINE IS UNDER SIGNIFICANT LOAD, MAY CAUSE A FIRE.
no report yet
Hood: latch
Risk. FAILURE OF THE SAFETY LATCH FEATURE MAY CAUSE THE HOOD TO UNEXPECTEDLY CLOSE WHILE OPEN, INCREASING THE RISK OF PERSONAL INJURY AND/OR VEHICLE DAMAGE.
no report yet
Other: labels
Risk. THIS MAY LEAD TO AN OWNER OVERLOADING THE VEHICLE WHICH CAN INCREASE THE RISK OF A TIRE FAILURE AND CRASH.
no report yet
Disc: caliper
Risk. AS THIS INTERFERENCE GETS LARGER, THIS COULD EVENTUALLY LEAD TO REDUCED BRAKING PERFORMANCE, INCREASING THE RISK OF A CRASH.
no report yet
Emission control: gas recirculation valve (egr valve)
Risk. THE LEAKING OF ENGINE OIL ONTO HOT EXHAUST COMPONENTS, SUCH AS WHEN THE ENGINE IS UNDER SIGNIFICANT LOAD, MAY CREATE THE POSSIBILITY OF A FIRE.
no report yet
Exterior lighting
Risk. POWER LOSS OF THE VEHICLE'S EXTERIOR LIGHTING MAY REDUCE THE VISIBILITY OF THE VEHICLE TO OTHER DRIVERS INCREASING THE RISK OF A CRASH WITH THE VEHICLE.
Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with Kenworth.
Best & worst years
2011 vs. every other T660 year
Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the T660 median. How we score
'04'05'06'07'08'09'10'11'12'13'14'15'16'17'18'19'20
- Avoid
- Caution
- Solid
- Best
- Not rated
In owners' words
What T660 owners report
Recent service brakes complaints filed with NHTSA, shortened. Personal details are removed.
DURING PRE-TRIP INSPECTION, SERVICE BRAKE CHECK FAILED, TOOK TO LONG TO BUILD UP AIR PRESSURE, ULTIMATELY, THE SYSTEM WOULD NOT REGISTER ANY AIR PRESSURE BY GAUGE OR PHYSICALLY.[XXXX], [XXXX] *JS INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Own a 2011 T660?
Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.