The Used Car Index

2020 Kenworth T660 problems

No complaints are listed for the 2020 Kenworth T660. NHTSA's API and bulk file list none in this build.

Data build 2026-10-09.

NHTSA lists this vehicle as KENWORTH T660.

At a glance

Complaints
0
With crash
0
With fire
0
With injury (complaints)
0
Injuries
0
Deaths
0
Recalls
1
Do not drive recalls
0
Park outside recalls
0
Recall potential units (maximum)
3,841
Investigations
0
Open investigations
0
Manufacturer communications
5

Complaints per 100k sold unavailable. No sales source is available for this record.

Model-generated complaint tags: No complaints are listed for tagging.

Recalls

See new recalls and investigations this week.

1 recalls.

23V717000

Date: 2023-10-26. Systems: SEAT BELTS.

Defect: PACCAR Incorporated (PACCAR) is recalling certain 2020 Kenworth T660, 2018-2024 Kenworth T800 and W900 vehicles. An additional spacer may have been added to the joint that connects the seat to the seat belt tether and buckle, causing an unsecured connection.

Consequence: An unsecured seat belt connection may not properly restrain an occupant during a crash, increasing their risk of injury.

Remedy: Dealers will inspect and remove the additional spacer and replace the bolt, as necessary, free of charge. Owner letters were mailed March 20, 2024. Owners may contact PACCAR's customer service at 1-425-828-5888. PACCAR's number for this recall is 23KWK.

Do not drive: No. Park outside: No.

Investigations

0 investigations; 0 open.

Manufacturer communications

5 manufacturer communications.

Communications by system
SystemCount
SEAT BELTS2
SEATS2
ENGINE1
EQUIPMENT1
SERVICE BRAKES1
SERVICE BRAKES, AIR1

11037541

Date: 2026-09-11. Type: Service Bulletin/Repair Instructions. Systems: ENGINE.

"Kenworth: Dealers should check the chassis list and SIR weekly for VIN changes. 2 chassis added to the chassis list. Peterbilt: Dealers should check the chassis list and SIR weekly for VIN changes. 10 chassis added to the chassis list."

11024956

Date: 2025-10-28. Type: Service Bulletin/Repair Instructions. Systems: SERVICE BRAKES.

SAFETY RECALL Additional chassis have been included. The chassis list has been updated. Certain T370 / T440 / T470 / T480 / T660 / T680 / T800 / T880 / W900 / C500 chassis may be equipped with air tank reservoirs that have less than twelve times the combined volume of all service brake chambers whic

10254164

Date: 2024-04-09. Type: Service Bulletin/Repair Instructions. Systems: SERVICE BRAKES, AIR.

Certain C500/T440/T470/T660/T680/T800/T880/W900 chassis may have air tank reservoirs that do not meet air volume requirements per FMVSS/CMVSS 121 A A?A A A A Air Brake SystemsA A?A A A A . This bulletin will be updated when repair parts and procedures are available.

10252592

Date: 2024-03-01. Type: Service Bulletin/Repair Instructions. Systems: EQUIPMENT, SEAT BELTS, SEATS.

Safety Recall Repair parts and procedures are now available. On certain Kenworth model years 2018 through 2024 C500/T660/T800/W900 trucks with Sears Atlas 70 or 80 series seats, a spacer was installed on the seatbelt mounting assembly. In a severe collision, the ICP bar may fail, increasing the ris

10245636

Date: 2023-11-28. Type: Service Bulletin/Repair Instructions. Systems: SEAT BELTS, SEATS.

Safety Recall Interim Notification On certain Kenworth model year 2018 through 2024 C500/T660/T800/W900 trucks with Sears Atlas 70 or 80 series seats, an additional spacer was installed on the seatbelt mounting assembly. In a severe collision, the ICP bar may fail allowing the seatbelt to slip, in

Notes on this record

  • Complaints from the API and bulk file are merged and deduplicated by ODI number; the API alone misses records.
  • System and subsystem counts are numbers of distinct complaints, recalls or communications that name them. One record can name several systems, so shares across systems can add to more than 100 percent; a single share never exceeds 100 percent.
  • Recalls are counted once per campaign, investigations once per action and manufacturer communications once per NHTSA id, even when NHTSA lists several model names for the same record.
  • A sales denominator is a calendar-year proxy, not the population of vehicles still in use. Rates are copied from verified pipeline output.
  • NHTSA's complaints API and bulk file list no complaint for this make, model and model year in this data build.

Other names NHTSA uses

None listed.

Matched NHTSA models

Matched labels and complaints
NHTSA model labelComplaints
T6600

Same model, other years

All model years | All Kenworth models

Other Kenworth models, 2020

Sources

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