The Used Car Index

2021 Heartland Mallard problems

NHTSA lists 3 complaints for the 2021 Heartland Mallard, 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 HEARTLAND MALLARD.

At a glance

Complaints
3
With crash
0
With fire
0
With injury (complaints)
0
Injuries
0
Deaths
0
Recalls
5
Do not drive recalls
0
Park outside recalls
0
Recall potential units (maximum)
22,326
Investigations
0
Open investigations
0
Manufacturer communications
0

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
SUSPENSION3100.0%
POWER TRAIN133.3%
STRUCTURE133.3%
Top subsystems
SystemSubsystemComplaints
POWER TRAINAXLE ASSEMBLY1
SUSPENSIONMULTIPLE AXLE1

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
structural or corrosion3100.0%0.83
Severities
LabelCountShare of taggedMean confidence
low266.7%0.61
moderate133.3%0.99

Model: typesafe/jev-1.13-20260917; schema version: tag-v1. 3 tagged complaints of 3 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.

5 recalls.

21V557000

Date: 2021-07-22. Systems: EQUIPMENT.

Defect: Heartland Recreational Vehicles, LLC (Heartland) is recalling certain 2021 North Trail and Mallard recreational trailers. The refrigerator roof vents were not routed properly during production.

Consequence: An improperly routed vent may allow the refrigerator to overheat, increasing the risk of a fire. Further, exhaust gas trapped inside the vehicle can cause carbon monoxide poisoning, increasing the risk of injury or death.

Remedy: Dealers will inspect the roof vent, and repair the vent sleeve connection if necessary, free of charge. Owner notification letters were mailed August 31, 2021. Owners may contact Heartland customer service at 1-877-262-8032.

Do not drive: No. Park outside: No.

21V453000

Date: 2021-06-17. Systems: EQUIPMENT.

Defect: Heartland Recreational Vehicles, LLC (Heartland) is recalling certain 2021 Mallard, Wilderness, Trail Runner and 2020-2021 North Trail trailers. The LP gas lines may not have been tightened properly on the outside cooktops, which could result in a gas leak.

Consequence: A gas leak can increase the risk of a fire.

Remedy: Dealers will inspect and tighten the LP gas lines, and test the propane system for leaks, free of charge. Owner notification letters were mailed August 10, 2021. Owners may contact Heartland customer service at 1-877-262-8032.

Do not drive: No. Park outside: No.

21V428000

Date: 2021-06-04. Systems: EQUIPMENT.

Defect: Heartland Recreational Vehicles, LLC. (Heartland) is recalling certain 2018-2021 Mallard, Shadow Cruiser, Sundance XLTTT, Wilderness, Prowler, Trail Runner, 2018-2019 Pioneer, Terry Classic, 2020-2021 Lithium, and 2021 North Trail trailers equipped with a Winntec model 6020 two-stage propane regulator. The regulator may fail, causing an increase in propane pressure.

Consequence: Increased propane pressure can enlarge the flames in gas appliances, increasing the risk of a fire.

Remedy: Dealers will replace the regulator and test the propane system for leaks, free of charge. Owner notification letters were mailed August 3, 2021. Owners may contact Heartland customer service at 1-877-262-8032.

Do not drive: No. Park outside: No.

21V009000

Date: 2021-01-14. Systems: SUSPENSION, TIRES.

Defect: Heartland Recreational Vehicles, LLC (Heartland) is recalling certain 2021 Mallard M180BH recreational trailers. These units had incorrect axle, rims, and tires installed during production.

Consequence: The incorrect axles, rims, and tires can cause the trailer to be overloaded, increasing the risk of a crash.

Remedy: Heartland will notify owners, and dealers will replace the axle, rims, tires and the spare tire, free of charge. The recall began January 28, 2021. Owners may contact Heartland customer service at 1-877-262-8032.

Do not drive: No. Park outside: No.

20V486000

Date: 2020-08-18. Systems: EQUIPMENT.

Defect: Heartland Recreational Vehicles, LLC (Heartland) is recalling certain 2021 Mallard travel trailers. The liquid propane (LP) hose and connector may contact the suspension shackle.

Consequence: Contact with the shackle can cause premature failure of the LP hose, increasing the risk of a fire in the presence of an ignition source.

Remedy: Heartland will notify owners, and dealers will relocate the hose to prevent the LP hose/connector from being able to make contact with the shackle. The recall began October 9, 2020. Owners may contact Heartland customer service at 1-877-262-8032.

Do not drive: No. Park outside: No.

Investigations

0 investigations; 0 open.

Manufacturer communications

0 manufacturer communications.

Communications by system
SystemCount

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
MALLARD3

Same model, other years

All model years | All Heartland models

Other Heartland models, 2021

Sources

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