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Heartland Mallard M335

Travel trailerbuilt 2016–24Mixed build tierCommon on the used market
WHAT ONE COSTS
$43,300est. used (2024, 2 yr old)

Sticker was $65,324 in 2024. Out of production since 2024, so the used market is the only way to buy one. Estimate assumes a 2024 unit.

WHAT IT WEIGHS BEHIND YOUR TRUCK
~9,900 lbestimated as towed, for 2 people

dry weight 8,840 lb + fresh water (45 gal, full) 375 lb + propane + battery 200 lb + gear for 2 600 lb (capped at its own rating). Brochure dry weight omits water, propane, batteries and your gear; this estimate doesn't.

You want a tow rating around11,000 lb (10% margin)
GVWR (the sticker maximum)9,900 lb
Tongue weight, loaded~874 lb (9%: low, watch for sway)
Cargo capacity1,526 lb
WHICH TOW VEHICLES IT FITS: 34 OF 95

Judged the way the app judges: estimated loaded weight against each vehicle's rating less a 10% margin, per model year, because the M335's published weights changed mid-run.

VEHICLETOW RATINGVERDICT
Chevrolet Silverado / GMC Sierra 1500 (6.2 V8, max tow) '19-2613,300 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 2500HD (Duramax, max tow) '24-2622,500 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 2500HD (Duramax) '20-2318,510 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 2500HD (Duramax) '11-1918,100 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 3500HD (Duramax DRW, gooseneck) '20-2636,000 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 3500HD (Duramax DRW, gooseneck) '11-1923,300 lbfits, loaded, with 10% margin
Chevrolet Silverado 1500 (max tow) '14-1812,500 lbfits, loaded, with 10% margin
Chevrolet Silverado EV (4WT) '24-2612,500 lbfits, loaded, with 10% margin
Ford F-150 (3.5 EcoBoost, max tow) '24-2613,500 lbfits, loaded, with 10% margin
Ford F-150 (3.5 EcoBoost, max tow) '15-2013,200 lbfits, loaded, with 10% margin
Ford F-150 (3.5 EcoBoost, max tow) '21-2314,000 lbfits, loaded, with 10% margin
Ford F-150 (3.5 EcoBoost, max tow) '11-1411,300 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel, gooseneck) '20-2222,800 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel, tow pkg) '17-1918,000 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel) '11-1616,600 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 HO diesel, gooseneck) '23-2623,000 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '17-1932,500 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '20-2237,000 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '11-1621,600 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 HO diesel DRW, gooseneck) '23-2638,000 lbfits, loaded, with 10% margin
Ford F-450 Super Duty (6.7 HO diesel DRW, gooseneck) '23-2640,000 lbfits, loaded, with 10% margin
GMC Sierra EV '24-2612,000 lbfits, loaded, with 10% margin
Nissan Titan XD (Cummins diesel) '16-1912,710 lbfits, loaded, with 10% margin
Ram 1500 (3.0 Hurricane, max tow) '25-2611,610 lbfits, loaded, with 10% margin
Ram 1500 (5.7 Hemi eTorque, max tow) '19-2412,750 lbfits, loaded, with 10% margin
Ram 1500 (5.7 Hemi, max tow) '11-1810,620 lb2024 model years fit
Ram 2500 (6.7 Cummins HO) '19-2620,000 lbfits, loaded, with 10% margin
Ram 2500 (6.7 Cummins) '11-1817,980 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins DRW, gooseneck) '13-1831,210 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins HO DRW, gooseneck) '25-2636,610 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins HO DRW, gooseneck) '19-2437,090 lbfits, loaded, with 10% margin
Rivian R1T '22-2611,000 lbfits, loaded, with 10% margin
Tesla Cybertruck '24-2611,000 lbfits, loaded, with 10% margin
Toyota Tundra (i-Force Max, tow pkg) '22-2612,000 lbfits, loaded, with 10% margin
The 61it doesn't fit

These verdicts assume 2 people aboard with typical gear. See the margin for your truck and your crew →

THE SPECS
Length39.7 ft
Height (incl. A/C)11.7 ft
Width8.0 ft
Interior height6.7 ft
GVWR9,900 lb
Dry weight8,840 lb
Dry tongue weight780 lb
Cargo capacity1,526 lb
Sleeps10
Slide-outs3
Axles2
Fresh water45 gal
Grey water40 gal
Black water40 gal
Awning14 ft

A missing row means the maker never published that figure: unknown, not zero.

WHERE PEOPLE SLEEP
  • 1× Front king bed(Permanent)—
  • 2× Rear double bunks(Permanent)—
  • 1× Booth dinette(Convertible)—
  • 2× Two sofas(Convertible)—
HOW IT'S BUILT: 5/5
WallsAzdel composite
FrameAluminum
RoofWalk-on
UnderbellyEnclosed

Heartland (Mixed tier): Mallard was Heartland's entry-price laminated trailer - Azdel walls, aluminum cage and a walkable vacuum-bonded roof put it above stick-and-tin rivals at the same money, but fit-and-finish and dealer support were ordinary and the line is now dead.

YEAR BY YEAR: WHAT CHANGED
YEARSGVWRDRYMSRP
2016–229,900 lb8,840 lb$45,878
20249,900 lb8,290 lb$65,324
  • 2016Introduced
  • 2024Dry weight cut to 8,290 lb, hitch up to 970 lb
  • 2025Discontinued
FINDING ONE

Common: usually several for sale within a day’s drive. Why: Heartland is a volume manufacturer; 9-year production run. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

The biggest Mallard ever - nearly 40 ft, but only about 1,000 lb of cargo capacity at launch.

OTHER MALLARD FLOORPLANS
17BHL · 3,860 lb · sleeps 617RBL · 3,880 lb · sleeps 4M180BH · 5,622 lb · sleeps 6M210RB · 6,900 lb · sleeps 4M223RK · 7,594 lb · sleeps 4M25 · 7,400 lb · sleeps 8M251BH · 7,882 lb · sleeps 8M26 · 8,600 lb · sleeps 8M260 · 7,810 lb · sleeps 6M267FK · 9,708 lb · sleeps 6M27 · 7,600 lb · sleeps 6M283RK · 9,600 lb · sleeps 6M312 · 8,600 lb · sleeps 10M32 · 8,600 lb · sleeps 10the whole line →
Find one for sale

Live listings for the M335 on the big marketplaces. Each search opens pre-filled with this exact floorplan:

RV Trader ↗Camping World ↗FB Marketplace ↗Google ↗

Inventory varies by site and day. Slim pickings? search the whole Mallard line ↗

Is the M335 your #1, or just a spec sheet?

These are the facts. Whether it beats the other six thousand rigs for you depends on what you care about. Set your priorities as sliders, switch on your hard limits, and watch the whole market re-rank around them. Every exclusion explained, every margin shown.

See where it ranks for you →

Data compiled from manufacturer spec sheets, retrieved 2026-07.