What Mack LR owners have reported to NHTSA, the service bulletins the manufacturer sent dealers, and any federal defect investigations, by model year. See Mack LR safety recalls or check your VIN.
Complaints owners filed with NHTSA, by the model year of the vehicle. A high count can also mean a popular year, so compare it with how many were sold.
| Year | Complaints | Crashes | Fires | Injured | Deaths | TSBs |
|---|---|---|---|---|---|---|
| 2027 | 0 | 0 | 0 | 0 | 0 | 5 |
| 2026 | 0 | 0 | 0 | 0 | 0 | 8 |
| 2025 | 0 | 0 | 0 | 0 | 0 | 31 |
| 2024 | 0 | 0 | 0 | 0 | 0 | 80 |
| 2023 | 0 | 0 | 0 | 0 | 0 | 70 |
| 2022 | 0 | 0 | 0 | 0 | 0 | 155 |
| 2021 | 0 | 0 | 0 | 0 | 0 | 163 |
| 2020 | 0 | 0 | 0 | 0 | 0 | 177 |
| 2019 | 1 | 0 | 0 | 0 | 0 | 222 |
| 2018 | 0 | 0 | 0 | 0 | 0 | 262 |
| 2017 | 0 | 0 | 0 | 0 | 0 | 245 |
| 2016 | 0 | 0 | 0 | 0 | 0 | 227 |
| 2015 | 0 | 0 | 0 | 0 | 0 | 178 |
| 2014 | 0 | 0 | 0 | 0 | 0 | 124 |
| 2013 | 0 | 0 | 0 | 0 | 0 | 110 |
| 2012 | 0 | 0 | 0 | 0 | 0 | 99 |
| 2011 | 0 | 0 | 0 | 0 | 0 | 99 |
| 2010 | 0 | 0 | 0 | 0 | 0 | 97 |
The vehicle systems named most often in Mack LR complaints (one complaint can name several).
In the owners’ own words, as filed with NHTSA. Unverified reports; NHTSA removes personal details before publishing.
The contact owns a 2019 Mack LR64. The contact stated that while driving at an undisclosed speed, the secondary fuel filter detached, and the vehicle stalled. The vehicle was towed to an independent mechanic, where the vehicle was repaired. The fuel filter was replaced. The manufacturer was made aware of the failure. The failure mileage was approximately 40,797.
Repair instructions and other communications the manufacturer sent dealers about known issues. A TSB is not a recall, and the repair is usually free only while the car is under warranty; ask your dealer for the bulletin number.
Fleet Improvement Campaign - Work Brake Valve Replacement
The purpose of this CBR is to provide steps on how to correct a customer complaint of DTC P107B86 accompanied With intermittent loss of throttle.
CBR - Mack Chassis - Through Shaft Bearing Retainer Breakage On Mack Carriers.
CBR - Mack Carrier Nut Adhesive Change.
SC - Trunion Nut Pinch Bolt.
CBR - No Start Condition After Over the Air Programing.
CBR - The purpose of this solution is to give information on Engine Control Module (EMS) Software content.
SC - Mack Trucks has determined that a select group of trucks were built with an AHI Module fuel pressure sensor which does not meet our specifications.
CBR - Mack Chassis - Model LR - Linear Assist Cylinder Repair.
CBR - Mack Chassis - Engine Brake Only Works With The Brake Pedal, No Function During Cruise. US07 And Newer Emissions, Model Year 2008 And Newer.
CBR - Mack DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions to US22+OBD2023 (DOES NOT APPLY TO AN(4) and PR(4)).
CBR - Engine Control Module (EMS) Software Information - Improvement List (Change Log), US21+OBD2021 Emissions ONLY
NHTSA’s Office of Defects Investigation opens these when complaints point to a possible safety defect. Many end in a recall.
On April 28, 2020, the Office of Defects Investigation (ODI) opened PE20-005 to investigate reports of 2013-2015 Mack CHU and CXU trucks equipped with mDrive transmissions continuing to push forward when stopping, possibly increasing the risk of a crash. After more field reports were discovered, the scope of the investigation was expanded to cover MY 2013-2016 vehicles. The mDrive transmission is Mack's version of Volvo's I-Shift transmission, an automated manual transmission that allows gear sh
Source: NHTSA Office of Defects Investigation public data (complaints, manufacturer communications, investigations), model years 2010 and later. Had a safety problem? Report it to NHTSA.
In complaints filed with NHTSA for model years 2010–2027, owners most often name: fuel system, diesel. 1 complaints are on record.
No. A complaint is an unverified report from an owner. A technical service bulletin (TSB) is the manufacturer telling dealers how to fix a known issue; it is not a safety recall and is usually covered only under warranty. A recall is a formal safety action, and its repair is free.
File a vehicle safety complaint at NHTSA.gov. NHTSA reads every report, and patterns of complaints are what open defect investigations and, eventually, recalls.