IllustrationFrame broke where leaf spring is attached to trailer.
2021 Heartland Mallard
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
Counts are not adjusted for sales, age, mileage exposure or reporting. A lower count does not establish that a car is problem-free.
About this comparison →3Owner complaints
Model-year median: 1
5Recall campaignsView recall details →
0InvestigationsView investigation details →
Check a VIN with NHTSA ↗ Model-level counts do not show whether a particular VIN is affected or repaired.
Inspection summary
2021 Heartland Mallard
NHTSA snapshot: September 18, 2026. 3 owner complaints · 5 recall campaigns · 0 investigations.
Counts are not failure probabilities and are not adjusted for sales, age, mileage exposure or reporting. One report may name several categories. Comparison method and limitations.
Top reported categories (up to 5)
- Suspension: 3 reports
- Power Train: 1 reports
- Structure: 1 reports
Full reported-category list and vehicle report
Recall links
- 21V557000 — Equipment:appliance:refrigerator
- 21V453000 — Equipment:appliance:oven/stove/cooktop; Equipment:recreational Vehicle/trailer:lpg Systems:lines And Fittings
- 21V428000 — Equipment:recreational Vehicle/trailer:lpg Systems
- 21V009000 — Suspension:multiple Axle; Tires
- 20V486000 — Equipment
Check a VIN with NHTSA. Model-level history does not establish whether a particular VIN is affected or repaired.
Print the top reported categories, recall links, snapshot date and comparison limits.
How this year compares
Owner complaints by model year
Compare all Mallard years →Counts vary with age, sales, mileage exposure and reporting. They are not failure rates.
What owners reported most
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 0 of 3 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Suspension. Review the 3 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Power Train. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Structure. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
0 crash reports0 fire reports0 injury reports
Structure complaints
1 reportsRecall campaigns
521V557000 · Equipment:appliance:refrigerator
Jul 22, 2021
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 & remedy
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.
21V453000 · Equipment:appliance:oven/stove/cooktop; Equipment:recreational Vehicle/trailer:lpg Systems:lines And Fittings
Jun 17, 2021
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 & remedy
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.
Additional source detail variants (2)
Equipment:appliance:oven/stove/cooktop
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.
Equipment:recreational Vehicle/trailer:lpg Systems:lines And Fittings
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.
21V428000 · Equipment:recreational Vehicle/trailer:lpg Systems
Jun 4, 2021
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 & remedy
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.
21V009000 · Suspension:multiple Axle; Tires
Jan 14, 2021
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 & remedy
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.
Additional source detail variants (2)
Tires
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.
Suspension:multiple Axle
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.
20V486000 · Equipment
Aug 18, 2020
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 & remedy
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.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
Defect investigations
0No exact-year investigations in this snapshot.
An investigation is not a finding of a defect, and closure does not prove a vehicle is problem-free.