01 What Heartland publishes for the Mallard
Heartland Recreational Vehicles, a Thor Industries company, of Elkhart, Indiana, lists 12 Mallard travel trailers in its 2023 Mallard East Coast brochure. Heartland prints a dry weight for every one profiled here, and each has a page of its own. It prints a GVWR for every one too. Heartland prints no cargo carrying capacity for any Mallard floorplan, and this site does not compute one. (How the data is verified.)
02 Heartland Mallard models
Heartland Mallard (East Coast edition) · 12 models
| Model | Dry weight | Cargo (CCC) | GVWR | Tongue | Length | Sleeps | On this site |
|---|---|---|---|---|---|---|---|
| Mallard (East Coast edition) M210RB | 4,598 lb | Not published by Heartland | 6,900 lb | 550 lb | 21' 9 1/2" | 3-4 | Profiled |
| Mallard (East Coast edition) M223RK | 5,122 lb | Not published by Heartland | 7,598 lb | 598 lb | 26' 10" | 5-6 | Profiled |
| Mallard (East Coast edition) M27 | 5,672 lb | Not published by Heartland | 6,900 lb | 638 lb | 30' 1" | 5-6 | Profiled |
| Mallard (East Coast edition) M251BH | 5,860 lb | Not published by Heartland | 7,846 lb | 820 lb | 29' 8 1/2" | 7-8 | Profiled |
| Mallard (East Coast edition) M260 | 5,866 lb | Not published by Heartland | 6,900 lb | 674 lb | 31' | 5-6 | Profiled |
| Mallard (East Coast edition) M26 | 5,996 lb | Not published by Heartland | 8,600 lb | 641 lb | 31' 9 1/2" | 7-8 | Profiled |
| Mallard (East Coast edition) M263RK | 6,256 lb | Not published by Heartland | 9,596 lb | 796 lb | 32' 3 1/3" | 5-6 | Profiled |
| Mallard (East Coast edition) M267FK | 6,406 lb | Not published by Heartland | 9,708 lb | 908 lb | 29' 10 1/4" | 5-6 | Profiled |
| Mallard (East Coast edition) M32 | 6,926 lb | Not published by Heartland | 8,600 lb | 670 lb | 34' 8 1/2" | 9+ | Profiled |
| Mallard (East Coast edition) M33 | 7,746 lb | Not published by Heartland | 9,600 lb | 702 lb | 36' 8 1/2" | 9+ | Profiled |
| Mallard (East Coast edition) M335 | 8,840 lb | Not published by Heartland | 9,900 lb | 780 lb | 39' 1/2" | 3-4 | Profiled |
| Mallard (East Coast edition) M321BH | Not published by Heartland | Not published by Heartland | Not published by Heartland | Not published by Heartland | 36' 10" | 9+ | Catalogued · Heartland prints its weights as TBD |
Read from Heartland’s 2023 Mallard East Coast brochure, 5 Nov 2026. “Not published” means the maker prints no figure; nothing is filled from another model, year or dealer.
03 Reading Heartland’s figures
A maker’s published weight is for a base trailer; options and dealer-installed equipment add weight to any particular unit. The federal weight label inside the trailer carries its own unloaded weight, cargo carrying capacity and GVWR (49 CFR 567 and 571.120): read it on the unit itself before any towing decision.
05 Recalls
NHTSA lists 12 recall campaigns affecting this line. The earliest was reported 20 May 2016 and the most recent 27 Mar 2024.
| Reported | Campaign | Component | What can go wrong |
|---|---|---|---|
| 27 Mar 2024 | 24V236000 | Equipment | A circuit board that overheats increases the risk of a fire. |
| 8 Aug 2022 | 22V591000 | Equipment | An awning that drops or extends beyond normal operation can increase the risk of injury. |
| 22 Jul 2021 | 21V557000 | Equipment | 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… |
| 17 Jun 2021 | 21V453000 | Equipment | A gas leak can increase the risk of a fire. |
| 4 Jun 2021 | 21V428000 | Equipment | Increased propane pressure can enlarge the flames in gas appliances, increasing the risk of a fire. |
| 14 Jan 2021 | 21V009000 | Suspension | The incorrect axles, rims, and tires can cause the trailer to be overloaded, increasing the risk of a crash. |
| 18 Aug 2020 | 20V486000 | Equipment | 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. |
| 14 May 2020 | 20V275000 | Equipment | If both U-bolts break, the carrier and spare tire can detach from the unit, resulting in an increased risk of injury and increase the risk of a crash. |
| 21 Sep 2018 | 18V634000 | Suspension | The missing bearing race may cause premature hub bearing failure, possibly resulting in a separation of the hub from the axle, thereby increasing the risk of a… |
| 9 Jan 2017 | 17V008000 | Equipment | If the label has incorrect tire pressure or size information, the operator may improperly inflate the tires or possibly over load the vehicle, increasing the risk… |
| 1 Aug 2016 | 16V566000 | Exterior lighting | If the light overheats there would be an increased risk of a fire. |
| 20 May 2016 | 16V332000 | Equipment | Improper inflation can cause the trailer tires to become overloaded, resulting in poor handling and increased risk of a crash. |
Coverage is not complete: this list is a starting point, not a clearance (how it is built), so check a specific VIN at NHTSA before you buy and again before you tow.
This count covers the Heartland Mallard only; campaigns NHTSA files only under the separate Mallard Pathfinder series, and Fleetwood’s older Mallard, are not counted here.
06 Owner-reported problems
Owners have filed 16 complaints with NHTSA about this line for model years 2005 on. The earliest was filed 3 Oct 2016 and the most recent 9 May 2025. The breakdown below is what those owners actually reported, grouped by the component NHTSA assigned.
Safety outcomes in this set: 1 report describing a crash and 4 reports describing a fire. These are the owner’s own account of what happened and have not been verified by NHTSA.
What gets reported
| Component group | Reports | Share |
|---|---|---|
| Suspension | 3 | 19% |
| Electrical system | 2 | 12% |
| Equipment | 2 | 12% |
| Service brakes | 2 | 12% |
| Unknown or other | 2 | 12% |
| Power train | 1 | 6% |
| Structure | 1 | 6% |
| Tires | 1 | 6% |
| Trailer hitches | 1 | 6% |
| Wheels | 1 | 6% |
Most recent reports
The most recent 10 owner reports filed on this line, newest first. Wording is NHTSA’s summary of what the owner described.
| Filed | Component | Miles | What the owner reported |
|---|---|---|---|
| 9 May 2025 | Unknown or other | — | 9 month old travel trailer fridge caught fire upon startup this season. May4th |
| 16 Aug 2024 | Unknown or other | — | June 2023 from the inside of the RV we noticed the back end of the RV sagging. I inspected the frame and found it was broken in several places. The right side of the 'I' beam was cracked just above the rear leaf spring hanger. On the left side of the trailer the leaf spring hanger was broken off… |
| 22 May 2024 | Suspension | — | Frame has broken in 2 locations at spring attachment bracket. |
| 25 Feb 2024 | Suspension | — | Frame broke where leaf spring is attached to trailer. |
| 14 Jul 2023 | Structure › Body | — | My Mallard 25 manufactured by Heartland was in the shop for another issue (black water tank). As they removed the under-belly, they noticed 4 cracks/fractures in the I-Beam on both sides behind all 4 wheels. The cracks vary in length. They told me to contact Heartland to see what can be done. I… |
| 23 Aug 2022 | Trailer hitches | — | They trailer hitch that I have used with this travel trailer has begun to fail. The head tilt spacers are beginning to elongate and will reach failure with continued use. The manufacturer indicated that this would be caused by overloading or a sharp turn, but neither of those events have happened… |
| 11 Aug 2022 | Suspension | 900 | ******* delete voq ******* this complaint is being marked for deletion because the consumer placed the request.*djr ******* delete voq ******* |
| 15 Jul 2022 | Service brakes | — | Camping World did a warranty axle repair in March 2021. During this repair, they mounted the axle but did not connect the electrics - I have pictures of coiled wires they left after mounting the new axle. This meant that the rear axle did not have the electric brakes, or the emergency breakaway… |
| 2 Mar 2022 | Equipment | 0 | The contact owns a 2019 Heartland Mallard M27 RV equipped with a Dometic AC unit, Manufacturer number: B57915.711J0, Serial number: 73826296, and Product number: 936002207. The contact stated while he was asleep, he started to smell a burning odor entering through the AC vents. The contact stated… |
| 10 Aug 2021 | Power train › Axle assembly | — | 2021 Heartland mallard. Consumer writes in reafrds to axle safety recall. The consumer stated the lower metal siding separated from the trailer and began scraping the tires. The consumer believed this was caused by the larger tires recommended by the recall notice. The vehicle was repaired, but the… |
How this count is drawn. A report is counted here only when NHTSA’s own model field names this line. What the owner typed in the description is never used to attribute a report: our line names are ordinary English words, and an owner writing “imagine my surprise when the axle went” or naming the state of Montana is not reporting a Grand Design Imagine or a Keystone Montana.
Read these as reports, not as findings. Complaints are submitted by owners and NHTSA does not verify them; no complaint here has been confirmed as a defect, and none of them is a recall. The sample is also self-selected — only owners motivated to file appear in it — so a high count tracks how many units a line sold at least as much as how well it was built. Use the pattern, not the total: a component that keeps recurring is worth inspecting on any used unit. File or search complaints at NHTSA.