Keystone Cougar 23MLS

Name: Keystone Cougar 23MLS
Brand: Keystone

Fifth wheelbuilt 2020–23Mixed build tierFindable on the used market

WHAT ONE COSTS

$37,500est. used (2023, 3 yr old)

Sticker was $60,540 in 2023. Out of production since 2023, so the used market is the only way to buy one. Estimate assumes a 2023 unit.

WHAT IT WEIGHS BEHIND YOUR TRUCK

~8,439 lbestimated as towed, for 2 people

dry weight 7,189 lb + fresh water (54 gal, full) 450 lb + propane + battery 200 lb + gear for 2 600 lb. Brochure dry weight omits water, propane, batteries and your gear; this estimate doesn't.

You want a tow rating around9,380 lb (10% margin)

GVWR (the sticker maximum)10,000 lb

Tongue weight, loaded~1,567 lb (19%)

Cargo capacity2,811 lb

WHICH TOW VEHICLES IT FITS: 37 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 23MLS's published weights held steady. Fifth wheels also need a pickup bed and are held to the fifth-wheel rating where published.

VEHICLE	TOW RATING	VERDICT
Chevrolet Silverado / GMC Sierra 1500 (6.2 V8, max tow) '19-26	13,300 lb	fits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 2500HD (Duramax, max tow) '24-26	22,500 lb	fits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 2500HD (Duramax) '20-23	18,510 lb	fits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 2500HD (Duramax) '11-19	18,100 lb	fits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 3500HD (Duramax DRW, gooseneck) '20-26	36,000 lb	fits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 3500HD (Duramax DRW, gooseneck) '11-19	23,300 lb	fits, loaded, with 10% margin
Chevrolet Silverado 1500 (max tow) '14-18	12,500 lb	fits, loaded, with 10% margin
Chevrolet Silverado EV (4WT) '24-26	12,500 lb	fits, loaded, with 10% margin
Ford F-150 (3.5 EcoBoost, max tow) '24-26	13,500 lb	fits, loaded, with 10% margin
Ford F-150 (3.5 EcoBoost, max tow) '15-20	13,200 lb	fits, loaded, with 10% margin
Ford F-150 (3.5 EcoBoost, max tow) '21-23	14,000 lb	fits, loaded, with 10% margin
Ford F-150 (3.5 EcoBoost, max tow) '11-14	11,300 lb	fits, loaded, with 10% margin
Ford F-150 Lightning (max trailer tow) '22-26	10,000 lb	fits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel, gooseneck) '20-22	22,800 lb	fits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel, tow pkg) '17-19	18,000 lb	fits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel) '11-16	16,600 lb	fits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 HO diesel, gooseneck) '23-26	23,000 lb	fits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '17-19	32,500 lb	fits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '20-22	37,000 lb	fits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '11-16	21,600 lb	fits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 HO diesel DRW, gooseneck) '23-26	38,000 lb	fits, loaded, with 10% margin
Ford F-450 Super Duty (6.7 HO diesel DRW, gooseneck) '23-26	40,000 lb	fits, loaded, with 10% margin
GMC Sierra EV '24-26	12,000 lb	fits, loaded, with 10% margin
Nissan Titan (5.6 V8, tow pkg) '17-24	9,760 lb	fits, loaded, with 10% margin
Nissan Titan XD (Cummins diesel) '16-19	12,710 lb	fits, loaded, with 10% margin
Ram 1500 (3.0 Hurricane, max tow) '25-26	11,610 lb	fits, loaded, with 10% margin
Ram 1500 (5.7 Hemi eTorque, max tow) '19-24	12,750 lb	fits, loaded, with 10% margin
Ram 1500 (5.7 Hemi, max tow) '11-18	10,620 lb	fits, loaded, with 10% margin
Ram 2500 (6.7 Cummins HO) '19-26	20,000 lb	fits, loaded, with 10% margin
Ram 2500 (6.7 Cummins) '11-18	17,980 lb	fits, loaded, with 10% margin
Ram 3500 (6.7 Cummins DRW, gooseneck) '13-18	31,210 lb	fits, loaded, with 10% margin
Ram 3500 (6.7 Cummins HO DRW, gooseneck) '25-26	36,610 lb	fits, loaded, with 10% margin
Ram 3500 (6.7 Cummins HO DRW, gooseneck) '19-24	37,090 lb	fits, loaded, with 10% margin
Rivian R1T '22-26	11,000 lb	fits, loaded, with 10% margin
Tesla Cybertruck '24-26	11,000 lb	fits, loaded, with 10% margin
Toyota Tundra (5.7 V8, tow pkg) '11-21	10,200 lb	fits, loaded, with 10% margin
Toyota Tundra (i-Force Max, tow pkg) '22-26	12,000 lb	fits, loaded, with 10% margin

The 58it doesn't fit

Chevrolet Colorado / GMC Canyon (2.7 Turbo HO, tow pkg) '23-26: over by ~1,509 lb loaded
Chevrolet Colorado / GMC Canyon (2.8 Duramax) '15-22: over by ~1,509 lb loaded
Chevrolet Suburban (5.3 V8, max tow) '21-26: no pickup bed (cannot hitch a fifth wheel)
Chevrolet Tahoe (5.3 V8, max tow) '21-26: no pickup bed (cannot hitch a fifth wheel)
Chevrolet Traverse (tow pkg) '18-26: no pickup bed (cannot hitch a fifth wheel)
Chrysler Pacifica '17-26: no pickup bed (cannot hitch a fifth wheel)
Dodge Durango (5.7 / 6.4 Hemi, tow pkg) '14-26: no pickup bed (cannot hitch a fifth wheel)
Ford Bronco 4-dr (2.7 EcoBoost, tow pkg) '21-26: no pickup bed (cannot hitch a fifth wheel)
Ford Expedition (3.5 EcoBoost, tow pkg) '25-26: no pickup bed (cannot hitch a fifth wheel)
Ford Expedition (3.5 EcoBoost, tow pkg) '18-24: no pickup bed (cannot hitch a fifth wheel)
Ford Explorer (3.0 EcoBoost, tow pkg) '20-26: no pickup bed (cannot hitch a fifth wheel)
Ford Maverick (2.0 EcoBoost, 4K tow pkg) '22-26: over by ~4,839 lb loaded
Ford Ranger (2.3 EcoBoost, tow pkg) '19-23: over by ~1,689 lb loaded
Ford Ranger (2.7 EcoBoost, tow pkg) '24-26: over by ~1,689 lb loaded
Ford Transit (HD tow pkg) '15-26: no pickup bed (cannot hitch a fifth wheel)
GMC Acadia (tow pkg) '20-26: no pickup bed (cannot hitch a fifth wheel)
GMC Hummer EV Pickup '22-26: over by ~1,689 lb loaded
GMC Yukon / Yukon XL (5.3 V8, max tow) '21-26: no pickup bed (cannot hitch a fifth wheel)
Honda Odyssey '18-26: no pickup bed (cannot hitch a fifth wheel)
Honda Passport (AWD) '19-26: no pickup bed (cannot hitch a fifth wheel)
Honda Pilot (AWD, tow pkg) '16-26: no pickup bed (cannot hitch a fifth wheel)
Honda Ridgeline (AWD) '17-26: over by ~3,939 lb loaded
Hyundai Palisade (tow pkg) '20-26: no pickup bed (cannot hitch a fifth wheel)
Hyundai Santa Cruz (2.5T AWD) '22-26: over by ~3,939 lb loaded
Jeep Gladiator (3.6 V6, max tow) '20-26: over by ~1,509 lb loaded
Jeep Grand Cherokee (5.7 Hemi) '11-21: no pickup bed (cannot hitch a fifth wheel)
Jeep Grand Cherokee (WL, tow pkg) '22-26: no pickup bed (cannot hitch a fifth wheel)
Jeep Grand Cherokee L (5.7 Hemi) '21-26: no pickup bed (cannot hitch a fifth wheel)
Jeep Grand Wagoneer (Hurricane, max tow) '22-26: no pickup bed (cannot hitch a fifth wheel)
Jeep Wagoneer (Hurricane, max tow) '22-26: no pickup bed (cannot hitch a fifth wheel)
Jeep Wrangler Unlimited 4-dr (tow pkg) '18-26: no pickup bed (cannot hitch a fifth wheel)
Kia Telluride (tow pkg) '20-26: no pickup bed (cannot hitch a fifth wheel)
Land Rover Defender '20-26: no pickup bed (cannot hitch a fifth wheel)
Land Rover Discovery '17-26: no pickup bed (cannot hitch a fifth wheel)
Lexus GX 550 (tow pkg) '24-26: no pickup bed (cannot hitch a fifth wheel)
Lexus LX 600 '22-26: no pickup bed (cannot hitch a fifth wheel)
Mazda CX-90 (3.3 turbo, tow pkg) '24-26: no pickup bed (cannot hitch a fifth wheel)
Mercedes-Benz Sprinter '19-26: no pickup bed (cannot hitch a fifth wheel)
Nissan Armada (3.5 twin-turbo, tow pkg) '25-26: no pickup bed (cannot hitch a fifth wheel)
Nissan Armada (tow pkg) '17-24: no pickup bed (cannot hitch a fifth wheel)
Nissan Frontier (3.8 V6, tow pkg) '22-26: over by ~2,004 lb loaded
Nissan Pathfinder (tow pkg) '22-26: no pickup bed (cannot hitch a fifth wheel)
Ram ProMaster '14-26: no pickup bed (cannot hitch a fifth wheel)
Rivian R1S '22-26: no pickup bed (cannot hitch a fifth wheel)
Subaru Ascent '19-26: no pickup bed (cannot hitch a fifth wheel)
Subaru Outback (XT / Wilderness) '20-26: no pickup bed (cannot hitch a fifth wheel)
Tesla Model X (tow pkg) '16-26: no pickup bed (cannot hitch a fifth wheel)
Tesla Model Y (tow pkg) '21-26: no pickup bed (cannot hitch a fifth wheel)
Toyota 4Runner (4.0 V6) '11-24: no pickup bed (cannot hitch a fifth wheel)
Toyota 4Runner (i-Force Max) '25-26: no pickup bed (cannot hitch a fifth wheel)
Toyota Grand Highlander (i-Force Max) '24-26: no pickup bed (cannot hitch a fifth wheel)
Toyota Highlander (tow pkg) '20-26: no pickup bed (cannot hitch a fifth wheel)
Toyota Land Cruiser (i-Force Max) '24-26: no pickup bed (cannot hitch a fifth wheel)
Toyota Sequoia (i-Force Max, tow pkg) '23-26: no pickup bed (cannot hitch a fifth wheel)
Toyota Sienna '21-26: no pickup bed (cannot hitch a fifth wheel)
Toyota Tacoma (i-Force Max, tow pkg) '24-26: over by ~2,589 lb loaded
Toyota Tacoma (V6, tow pkg) '16-23: over by ~2,319 lb loaded
Volkswagen Atlas (tow pkg) '18-26: no pickup bed (cannot hitch a fifth wheel)

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

THE SPECS

Length26.8 ft

Height (incl. A/C)12.0 ft

GVWR10,000 lb

Dry weight7,189 lb

Dry tongue weight1,335 lb

Cargo capacity2,811 lb

Sleeps6

Slide-outs2

Axles2

Fresh water54 gal

Grey water60 gal

Black water30 gal

Awning17 ft

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

WHERE PEOPLE SLEEP

1× front bedroom queen(Permanent)60×80
1× tri-fold sleeper sofa(Convertible)—
1× booth dinette converts to bed(Convertible)—

HOW IT'S BUILT: 4/5

WallsLaminated fiberglass

FrameAluminum

RoofWalk-on

UnderbellyEnclosed

Keystone (Mixed tier): Keystone's mid-tier fifth wheel — decent laminated build and huge volume, but Keystone-grade QC keeps it out of the top tier.

YEAR BY YEAR: WHAT CHANGED

2020Introduced
2023Replaced by the 23MLE

FINDING ONE

Findable: a few listed nationwide most weeks. Why: Keystone is a volume manufacturer. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

The original Half-Ton mid-living plan; replaced by the 23MLE.

OTHER COUGAR FLOORPLANS

23MLE · 10,075 lb · sleeps 6 24RDS · 10,000 lb · sleeps 6 25RES · 10,000 lb · sleeps 6 260MLE · 12,000 lb · sleeps 4 26RES · 10,300 lb · sleeps 4 26RKE · 11,000 lb · sleeps 6 2700BH · 9,900 lb · sleeps 10 27SGS · 10,290 lb · sleeps 4 28RLI · 11,000 lb · sleeps 6 290RLS · 12,200 lb · sleeps 6 29MBD · 11,500 lb · sleeps 10 29MBS · 11,000 lb · sleeps 9 29RKS · 10,400 lb · sleeps 6 29RLI · 11,000 lb · sleeps 6 the whole line →

Find one for sale

Live listings for the 23MLS 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 Cougar line ↗

Is the 23MLS 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 dealer and aggregator listings, retrieved 2026-07.