The Used Car Index

2021 Kenworth W900 problems

NHTSA lists 1 complaints for the 2021 Kenworth W900, 0 of them mention a crash and 0 mention a fire. 0 complaints mention an injury, with 0 injuries and 0 deaths reported.

Data build 2026-10-09.

NHTSA lists this vehicle as KENWORTH W900.

At a glance

Complaints
1
With crash
0
With fire
0
With injury (complaints)
0
Injuries
0
Deaths
0
Recalls
3
Do not drive recalls
0
Park outside recalls
0
Recall potential units (maximum)
3,841
Investigations
0
Open investigations
0
Manufacturer communications
30

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

Where the complaints are

Top systems
SystemComplaintsShare of this vehicle's complaints
UNKNOWN OR OTHER1100.0%
Top subsystems
SystemSubsystemComplaints

One complaint can name several systems, so shares can add to more than 100 percent.

Model-generated complaint tags

These labels are model-generated, not NHTSA data.

Failure modes
LabelCountShare of taggedMean confidence
unclear1100.0%0.71
Severities
LabelCountShare of taggedMean confidence
low1100.0%0.79

Model: typesafe/jev-1.13-20260917; schema version: tag-v1. 1 tagged complaints of 1 complaints (100.0%).

Confidence is the model's own probability for the label it chose (0 to 1), not accuracy.

Model-generated labels on tagged complaints only. Model years 2013 and newer are tagged in full; 2012 in part (see tagged_share); earlier model years have no tags. NHTSA's own flags remain separate in the complaints block.

Recalls

See new recalls and investigations this week.

3 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.

21V080000

Date: 2021-02-17. Systems: ENGINE.

Defect: PACCAR Incorporated (PACCAR) is recalling certain 2021-2022 Kenworth T680, T880, W990, T800, W900 and Peterbilt 579, 567, 389, 367 vehicles equipped with a Cummins X15 engine. The capscrews that attach the flywheel to the crankshaft may have been improperly torqued, allowing the flywheel to detach.

Consequence: A detached flywheel can cause loss of drive power, increasing the risk of a crash. Additionally, driveline pieces may be ejected from the engine compartment, increasing the risk of injury.

Remedy: PACCAR will notify owners, and dealers will properly torque the capscrews and the engine will also be inspected for damage and, if necessary, repaired, free of charge. The recall began on March 29, 2021. Owners may contact PACCAR customer service at 1-425-828-5888 (Kenworth) or 1-940-591-4220 (Peterbilt). PACCAR's numbers for this recall are 21KWA and 21PBB.

Do not drive: No. Park outside: No.

20V506000

Date: 2020-08-26. Systems: POWER TRAIN.

Defect: PACCAR Incorporated (PACCAR) is recalling certain 2020-2021 Peterbilt 348, 365, 367, 389, 520, 567 and Kenworth T800, T880, W900, W990 vehicles equipped with Watson and Chalin steerable lift axle suspension systems (model SL2065). The axles may have lower rear pivot bolts that are not long enough to sufficiently engage the locking feature of the corresponding nuts.

Consequence: The short screws can cause the hardware to separate from the suspension system and become road hazards, increasing the risk of a crash and/or injury.

Remedy: PACCAR will notify owners, and dealers will inspect suspect chassis and replace the pivot bolts, as necessary, free of charge. The recall began September 29, 2020. Owners may contact Kenworth customer service at 1-425-828-5888 and Peterbilt customer service at 1-940-591-4220. PACCAR's numbers for this recall is 20PBE and 20KWC.

Do not drive: No. Park outside: No.

Investigations

0 investigations; 0 open.

Manufacturer communications

30 manufacturer communications.

Communications by system
SystemCount
ENGINE AND ENGINE COOLING8
ENGINE5
EQUIPMENT4
ELECTRICAL SYSTEM3
VISIBILITY3
EQUIPMENT ADAPTIVE/MOBILITY2
POWER TRAIN2
SEAT BELTS2

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."

11036291

Date: 2026-08-13. Type: Service Bulletin/Repair Instructions. Systems: FORWARD COLLISION AVOIDANCE.

The verbiage in the Introduction section has been updated.

11033916

Date: 2026-06-06. Type: Service Bulletin/Repair Instructions. Systems: ENGINE.

The PACCAR Powertrain Prognostics Webcast video link has been removed. It will be included with updated information at a later date.

11033373

Date: 2026-05-18. Type: Service Bulletin/Repair Instructions. Systems: ENGINE.

Kenworth - The Warranty section has been updated to include Peterbilt-specific SRT codes for cross-division repair filing.

11032290

Date: 2026-04-16. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.

Bogie Crossmember Torque Value Update - Procedure has been updated to correct torque values.

11028314

Date: 2026-01-31. Type: Service Bulletin/Repair Instructions. Systems: ENGINE.

Procedure pictures updated for clarity. When troubleshooting Cummins X15 fault codes 555 or 556, follow this additional testing, inspection, and documentation procedure to help identify the root cause of dusted engines. This is not a stand-alone process but must be used alongside Cummins troublesho

11027058

Date: 2025-12-31. Type: Service Bulletin/Repair Instructions. Systems: FUEL/PROPULSION SYSTEM.

Certain vehicle model years 2020-2025 K270, K370, T270, T280, T370, T380, T480, T680, T880, W900 chassis have updated Greenhouse Gas (GHG) labels available for installation.

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

11022496

Date: 2025-08-20. Type: Other. Systems: ENGINE, POWER TRAIN.

Condition, Chassis Affected, and Warranty sections updated with the following verbiage a E311 must be flagged and open in Service Information Record (SIR) at the time of RO open date to qualify.a Also, a Through Standard Warranty or any applicable active Extended Warrantya verbiage was removed

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.

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.

Other names NHTSA uses

None listed.

Matched NHTSA models

Matched labels and complaints
NHTSA model labelComplaints
W9001

Same model, other years

All model years | All Kenworth models

Other Kenworth models, 2021

Sources

Get this record as JSON

The free rate-limited demo needs no key.

curl "https://api.theusedcarindex.com/v1/demo/vehicle_risk?make=Kenworth&model=W900&year=2021"

Paid endpoint: https://api.theusedcarindex.com/v1/vehicle_risk. MCP endpoint: https://api.theusedcarindex.com/mcp.