VehicleVerdict

2016 Mack Leu problems

Verdict · NHTSA data

Limited data — recalls on file

NHTSA has just 0 complaints on file for the 2016 Mack Leu — too few to judge reliability from owner reports alone — but 2 recall campaigns apply to this year, so any used example should have its VIN checked for completed recall work.

0

NHTSA complaints

2

Recalls

1

Investigations

0

Crash-involved

0

Fires reported

0

Injuries

0

Deaths

—

NCAP overall

How does 2016 compare to other Leu years?

Leu NHTSA complaints by model year, 2016 highlighted1 complaints2008: 0 complaints2009: 0 complaints2010: 0 complaints2011: 0 complaints2012: 0 complaints2013: 0 complaints2014: 0 complaints2015: 0 complaints2016: 0 complaints
Leu NHTSA complaints by model year, 2016 highlighted. Red bars are years to avoid.

See all Leu years to avoid →

Does the 2016 Mack Leu have recalls?

2 NHTSA recall campaigns on file. Recall repairs are free at franchised dealers.

15V275000EngineMay 11, 2015 · 2,124 units

Defect

Mack Trucks, Inc. (Mack) is recalling certain model year 2011-2016 Mack MRU and LEU trucks manufactured June 25, 2010, to April 30, 2015, and 2015-2016 LR6 trucks manufactured from December 18, 2014 through March 6, 2015. Excessive engine crankcase pressures may cause the 90-degree elbow of the vent tube assembly to detach from the crankcase ventilation breather, possibly allowing engine oil to come into contact with hot surfaces.

Consequence

If engine oil comes into contact with a hot surface, there could be an increased risk of a fire.

Remedy

Cummins will notify owners on behalf of Mack, and Cummins service centers will administer the repairs which include securing the ends of the 90-degree elbow and reprogramming the electronic control module (ECM) with software that can adjust the engine output under misfire conditions to limit crankcase pressures. These repairs will be performed free of charge. The recall began on June 12, 2015. Owners may contact Mack customer service at 1-800-528-6586 or Cummins Inc. at 1-800-343-7357. Mack's number for this recall is SC0391.

15V025000BrakesJanuary 22, 2015 · 349 units

Defect

Mack Trucks, Inc. (Mack) is recalling certain model year 2015 and 2016 CXU and LEU trucks manufactured May 20, 2014, to March 24, 2015, equipped with certain Haldex Life Seal Type 30/30 Long Stroke Air Brake Actuators manufactured from January 9, 2014, through February 3, 2015. The affected actuators may have an incomplete attachment of the internal rubber diaphragm to the actuation mechanism of the parking brake section of the Life Seal actuator.

Consequence

If the diaphragm is not completely attached, there may be internal leakage from the service section past the diaphragm, potentially trapping air pressure in the parking brake section. This air pressure in turn, if not vented, may prevent full release of the actuator unit, and may induce brake drag and may result in overheated wheelend service brakes, increasing the risk of a fire.

Remedy

Mack will notify owners, and dealers will inspect the brake actuator and replace, as necessary, free of charge. The recall began March 20, 2015. Owners may contact Mack customer service at 1-610-709-2131. Mack's number for this recall is SC0387.

2016 Mack Leu — common questions

Is the 2016 Mack Leu reliable?

The record is thin — 0 NHTSA complaints — so owner-report data can't strongly confirm reliability either way, though 2 recalls should be verified as completed.

Does the 2016 Mack Leu have recalls?

Yes — NHTSA lists 2 recall campaigns affecting the 2016 Mack Leu. Recall repairs are free at franchised dealers; check the VIN at nhtsa.gov/recalls to confirm the work was done.

Is the 2016 Mack Leu under NHTSA investigation?

NHTSA opened one investigation into this model year; all are now closed.

Related

Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.

Compiled by Sharon Ben-Moshe, Founder.