U.S. public vehicle records

2012 Kenworth T660 problems and owner complaints

Explore the records behind recurring owner reports.

Key facts

1 owner complaints analyzed

9 distinct recall campaigns

267,821 mi median reported failure mileage

Scope: 2012 model year. Data updated: 2026-09-30 (September 30, 2026). 1 complaints include usable failure mileage. View data status.

This selection has limited data. It remains available for lookup but is excluded from search indexing.

Owner-reported patterns

Most common problems

Engine is the most frequently named component, appearing in 1 of 1 complaints (100.0%). A complaint can name multiple components.

Component breakdown

Number of unique complaints naming each component. Top eight shown.

Engine

Engine: 1

Reported problems by failure mileage

Complaint counts in mileage bands. These are not failure rates per vehicle or mile.

Under 25,000

25,000 to 49,999

50,000 to 74,999

75,000 to 99,999

100,000 to 149,999

150,000 and above

Under 25,000: 0; 25,000 to 49,999: 0; 50,000 to 74,999: 0; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 1

150,000 and above miles has the most reports with usable mileage (1). 0 complaints have missing, zero or invalid mileage.

Complaints over time

Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.

2014

2014: 1

Pattern summary

Engine leads the component reports. Use these patterns to inspect individual reports and prepare questions for a mechanic.

Calculated from recorded counts. An AI narrative has not been published for this selection.

Complaint evidence

Examples provide context, not a representative sample or a verified diagnosis.

Explore the data

Vehicle analysis explorer

Inspect model-year patterns, reported mileage, monthly activity and the evidence behind each signal.

Data completeness

1 unique complaints in this selection. Analysis snapshot: 2026-09-30.

100.0%Usable mileage1 / 1 records

100.0%Valid incident date1 / 1 records

100.0%Valid filing date1 / 1 records

100.0%Ordered incident and filing dates1 / 1 records

Missing, zero and invalid mileage is excluded. Dates after the snapshot are excluded. Examples are limited selections, not a representative sample.

Problems by model year

Model-wide comparison of the eight most reported components across the model. Cells show counts and shares within each model year. Open a cell for source examples.

From model yearThrough model year

Component complaint heatmap
Component	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020
Engine And Engine Cooling:Engine:Diesel	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	2100.0% ODI 10317599 CUMMINS ISX ENGINE SHUT DOWN TWELVE TIMES SINCE AUG (7 MONTH PERIOD) ON HWY OFTEN REQUIRING A TOW UPDATED 4/26/10 CN IT WAS FINALLY DETERMINED THE WIRING HARNESS THAT SUPPLIED POWER TO THE ECM WAS NOT CONNECTED PROPERLY FROM THE FACTORY. OVER TIME, THE CONNECTION BECAME WORSE WHICH CAUSED THE ENGINE TO SHUT DOWN. UPDATED 06/04/10. JB Look up ODI 10317599 at NHTSA ↗	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.
Electrical System	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	150.0% ODI 10317599 CUMMINS ISX ENGINE SHUT DOWN TWELVE TIMES SINCE AUG (7 MONTH PERIOD) ON HWY OFTEN REQUIRING A TOW UPDATED 4/26/10 CN IT WAS FINALLY DETERMINED THE WIRING HARNESS THAT SUPPLIED POWER TO THE ECM WAS NOT CONNECTED PROPERLY FROM THE FACTORY. OVER TIME, THE CONNECTION BECAME WORSE WHICH CAUSED THE ENGINE TO SHUT DOWN. UPDATED 06/04/10. JB Look up ODI 10317599 at NHTSA ↗	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.
Electronic Stability Control (Esc)	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	1100.0% ODI 11441510 The contact owns a 2014 Kenworth T660. The contact received a recall notification for NHTSA Campaign Number: 20V199000 (Electronic Stability Control, Service Brakes, Air). The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was notified of the issue. The part was not available for repair. The contact had not experienced a failure. Parts distribution disconnect. Look up ODI 11441510 at NHTSA ↗	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.
Engine	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	1100.0% ODI 10583777 · 267,821 mi CUMMINS ENGINE HAS NOT COME FORWARD AND ANNOUNCE ON THEIR IS 15 LITERS THAT THERE ARE HAVING RINGS AND SLEEVES ISSUES. WHICH CAUSE THE ENGINE TO BURN OIL FAILING OUR DIESEL PARTICULAR FILTER WHICH COULD CAUSE A FIRE. THE EXIST DUE A DESIGNEE FAULT IN THE PISTONS OF THE ENGINES. RINGS ARE PACKING WITH SOOT AND PUSHING RINGS OPEN AND ALLOWING OIL TO BURN IN THE ENGINE . THE EXTRA THEN CAUSE DPF COG FAST MAKING MORE REGN. IF THE DPF CAN NOT CLEAR IT SELF IT IS A CONSTANT RENG. THIS COULD LEAVE TO A FIRE. *TR Look up ODI 10583777 at NHTSA ↗	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.
Service Brakes	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	1100.0% ODI 10545083 · 373,000 mi 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) Look up ODI 10545083 at NHTSA ↗	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.
Service Brakes, Air	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	1100.0% ODI 11441510 The contact owns a 2014 Kenworth T660. The contact received a recall notification for NHTSA Campaign Number: 20V199000 (Electronic Stability Control, Service Brakes, Air). The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was notified of the issue. The part was not available for repair. The contact had not experienced a failure. Parts distribution disconnect. Look up ODI 11441510 at NHTSA ↗	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.
Service Brakes, Hydraulic	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	150.0% ODI 10399881 · 145,000 mi TL* THE CONTACT OWNS A 2010 KENWORTH T660 TRUCK. WHILE DRIVING APPROXIMATELY 10 MPH, THE CONTACT ATTEMPTED TO DEPRESS THE BRAKE PEDAL WHEN HE NOTICED THAT THE VEHICLE WAS HESITANT TO STOP. THE CONTACT WAS ABLE TO PULL THE EMERGENCY BRAKE IN ORDER TO SLOW THE VEHICLE SPEED BUT THE CONTACT CRASHED INTO THE VEHICLE POSITIONED IN FRONT OF HIM. THE CONTACT NOTICED THERE WAS A COVER OVER THE STEERING COLUMN WHICH INTERFERED WHEN HE ATTEMPTING TO BRAKE. THE CONTACT STATED THAT THE BRAKE PEDAL WAS EXTREMELY NARROW AND MADE IT DIFFICULT TO ENGAGE. A POL… Look up ODI 10399881 at NHTSA ↗	00.0% No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.
Steering	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	150.0% ODI 10426705 · 160,225 mi WHILE GOING DOWN LONG MOUNTAIN GRADES, IN HOT WEATHER, THE STEERING LOCKS UP. I WAS TOLD THAT IT NEEDED A OIL COOLER. I PAID $1280.00 FOR AN OIL COOLER. TRW DOES NOT THINK THEY HAVE ANY RESPONSIBILITY TO WARRANTY A ONE YEAR OLD STEERING GEAR. EVEN THOUGH THEY KNOW THAT IT IS A MALFUNCTIONING RELIEF VALVE. *TR Look up ODI 10426705 at NHTSA ↗	00.0% No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.

Darker cells indicate a larger share of submitted complaints. Components overlap. This measures complaint composition, not failure probability.

Failure mileage by component

Median and middle 50% of usable owner-reported mileages. Ranges require at least five records.

Component failure mileage distribution
Component	Mileage range (25th–75th percentile)	Median	Usable records	Examples
Engine	Too few reports for a range	267,821 mi	1 (sparse)	ODI 10583777 · 267,821 mi CUMMINS ENGINE HAS NOT COME FORWARD AND ANNOUNCE ON THEIR IS 15 LITERS THAT THERE ARE HAVING RINGS AND SLEEVES ISSUES. WHICH CAUSE THE ENGINE TO BURN OIL FAILING OUR DIESEL PARTICULAR FILTER WHICH COULD CAUSE A FIRE. THE EXIST DUE A DESIGNEE FAULT IN THE PISTONS OF THE ENGINES. RINGS ARE PACKING WITH SOOT AND PUSHING RINGS OPEN AND ALLOWING OIL TO BURN IN THE ENGINE . THE EXTRA THEN CAUSE DPF COG FAST MAKING MORE REGN. IF THE DPF CAN NOT CLEAR IT SELF IT IS A CONSTANT RENG. THIS COULD LEAVE TO A FIRE. *TR Look up ODI 10583777 at NHTSA ↗

Complaint and recall timeline

Explore monthly filing activity alongside recall announcements. Up to ten years of monthly history is available.

ComponentPeriod

Solid line: filed complaints. Dashed amber lines: recall announcement dates for this vehicle selection; markers include all recall components. The latest month is partial. Temporal proximity does not establish causation.

Monthly counts, recall campaigns and complaint examples

Monthly complaint and recall timeline
Month	Campaigns announced	Examples
2024-10	None	No examples available for this selection.
2024-11	None	No examples available for this selection.
2024-12	None	No examples available for this selection.
2025-01	None	No examples available for this selection.
2025-02	None	No examples available for this selection.
2025-03	None	No examples available for this selection.
2025-04	None	No examples available for this selection.
2025-05	None	No examples available for this selection.
2025-06	None	No examples available for this selection.
2025-07	None	No examples available for this selection.
2025-08	None	No examples available for this selection.
2025-09	None	No examples available for this selection.
2025-10	None	No examples available for this selection.
2025-11	None	No examples available for this selection.
2025-12	None	No examples available for this selection.
2026-01	None	No examples available for this selection.
2026-02	None	No examples available for this selection.
2026-03	None	No examples available for this selection.
2026-04	None	No examples available for this selection.
2026-05	None	No examples available for this selection.
2026-06	None	No examples available for this selection.
2026-07	None	No examples available for this selection.
2026-08	None	No examples available for this selection.
2026-09 (partial)	None	No examples available for this selection.

Emerging complaint spikes

Complete months in the latest six months with at least 10 complaints, at least twice the preceding 12-month average, and at least three square-root deviations above that average.

This is a descriptive screening rule, not a statistical defect finding. Publicity and reporting changes can increase submissions.

No complete months meet the spike thresholds for this selection.

Equal-age model-year comparison

Model-wide cumulative reports during the first three or five calendar years, starting with the model year (age 0). Only fully elapsed windows are compared.

Observation windowFirst model yearSecond model year

2019: 0 complaints · 2020: 0 complaints

Equal observation windows
Model year	Through age 0	Through age 1	Through age 2
2019	0	0	0
2020	0	0	0

Date coverage across each selected cohort

Date basis for all complaints in selected model years
Year	Incident dates used	Filing date fallbacks	Excluded dates
2019	0	0	0
2020	0	0	0

Incident date is preferred when valid and no later than filing; otherwise filing date is used. Model year approximates age. Equal observation time does not adjust for sales, distance driven or reporting delays. One complaint linked to multiple model years can appear in each cohort.

Components reported together

Each cell counts unique complaints naming both components. Open a nonzero cell for examples.

Component co-occurrence matrix
Component	Engine
Engine	—

Co-reporting does not establish that one component caused another concern.

Recurring narrative patterns

Specific keyword mentions beyond broad component labels. Matching includes negations and comparisons and does not confirm a diagnosis.

Search patterns

1 patterns with matching reports.

Oil consumption or dilution

1 mentions · 100.0% of complaints

Median mileage: 267,821 mi (1 usable records).

ODI 10583777 · 267,821 mi

CUMMINS ENGINE HAS NOT COME FORWARD AND ANNOUNCE ON THEIR IS 15 LITERS THAT THERE ARE HAVING RINGS AND SLEEVES ISSUES. WHICH CAUSE THE ENGINE TO BURN OIL FAILING OUR DIESEL PARTICULAR FILTER WHICH COULD CAUSE A FIRE. THE EXIST DUE A DESIGNEE FAULT IN THE PISTONS OF THE ENGINES. RINGS ARE PACKING WITH SOOT AND PUSHING RINGS OPEN AND ALLOWING OIL TO BURN IN THE ENGINE . THE EXTRA THEN CAUSE DPF COG FAST MAKING MORE REGN. IF THE DPF CAN NOT CLEAR IT SELF IT IS A CONSTANT RENG. THIS COULD LEAVE TO A FIRE. *TR

Look up ODI 10583777 at NHTSA ↗

Matching rule

\b(oil consumption|burn\w* oil|consum\w* oil|oil dilution|gas(?:oline)? in (?:the )?oil)\b