2026 Coachmen Phoenix 373MBRB vs Forest River Sierra 3844QUAD
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Key differences
Both are 2026 Fifth wheel models. Here's how they differ, from manufacturer specifications.
- The Forest River Sierra 3844QUAD is 3″ longer: 42′ 9″ vs 42′ 6″.
- The Coachmen Phoenix 373MBRB is 834 lb lighter unloaded: 13,030 vs 13,864 lb.
- The Forest River Sierra 3844QUAD has a 1,295 lb higher GVWR: 16,295 vs 15,000 lb.
- The Forest River Sierra 3844QUAD lists 461 lb more cargo capacity: 2,431 vs 1,970 lb.
- The Coachmen Phoenix 373MBRB has a 76 lb lighter hitch weight: 2,219 vs 2,295 lb.
- Both have 5 slide-outs.
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YOUR SHORTLIST
Floorplan
PRICING
Manufacturer price (USD)
Not verified
Not verified
Lowest tracked dealer price (USD)
No recently verified dealer price
No recently verified dealer price
Est. monthly payment (USD)
No verified price to estimate from
No verified price to estimate from
DIMENSIONS & WEIGHTS
Exterior length
42′ 6″
42′ 9″
Exterior width
8′ 0″
8′ 0″
Exterior height
13′ 0″
13′ 5″
Shipping / unloaded weight
13,030 lb
13,864 lb
GVWR
15,000 lb
16,295 lb
Listed cargo capacity
1,970 lb
2,431 lb
Listed hitch weight
2,219 lb
2,295 lb
LIVING & SLEEPING
Sleeping capacity
—
—
Slide-outs
5
5
Main bed
Not verified
Not verified
Bunk beds
✓ Yes
✓ Yes
Dinette
Not verified
Not verified
Bathroom
Not verified
Not verified
Refrigerator
Not verified
Not verified
TANKS & EVERYDAY FEATURES
Fresh water
48 gal
50 gal
Gray water
120 gal
104 gal
Black water
75 gal
82 gal
Awning length
17′ 0″
15′ 0″
Shore power / electrical service
Not verified
Not verified
Solar equipment
Not verified
Not verified
Outdoor kitchen
✓ Yes
✓ Yes
Washer/dryer prep
Not verified
Not verified
Microwave
Not verified
Not verified
Cooktop
Not verified
Not verified
Air conditioning
Not verified
Not verified
Electric fireplace
Not verified
Not verified
Backup camera
Not verified
Not verified
Propane tanks
—
—
Tire size
Not verified
Not verified
SOURCES & VERIFICATION
Weight basis
Manufacturer unloaded vehicle weight
Manufacturer unloaded vehicle weight
Source checked
2026-10-28 Manufacturer ↗
2026-10-28 Manufacturer ↗
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Manufacturer floorplan images © their respective manufacturers. Specs checked October 19, 2026; exact-unit labels and production options may differ. “Not verified” or a dash means we have no confirmed value. “Not listed” means the applicable manufacturer equipment was checked but does not mention the feature; it does not mean “No.” “Conflicting data” means manufacturer entries disagree. “Optional” equipment is available but is not confirmed as standard. Camera prep does not confirm an installed camera. Weights are kept separate: unloaded weight, GVWR, cargo capacity, and hitch weight. Confirm every specification for the exact model year and configuration with the manufacturer. This tool does not establish towing compatibility.
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