Front bedroom, rear living area, bunk beds, mid bunk
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2023 Grand Design Solitude 378MBS
UsedStock #C60521
Listing price
2023 Solitude 378MBS
Other floor plans with a similar body style, feature mix, and price range, prioritizing other manufacturers and brands.
What makes the 378MBS interesting is its layout logic: the living room lives in the rear slide, giving it a true room-like feel, while the east/west bed up front stays well away from the noise. The mid-bunk section is legitimately versatile. Owners have used it as an office, guest space, or actual bunk room depending on the trip. Grand Design builds the Solitude line with thicker walls and more insulation than most competitors, and the 378MBS adds CRE 3000 suspension and auto-leveling to help manage what is a substantial rig to tow. A kitchen island, desk, fireplace, and washer/dryer prep mean this one is set up for extended stays, not just weekends.
Length
40 ft 2 in
Dry weight
14,344 lbs
GVWR
16,800 lbs
Sleeps
7
Many factors play into a unit's listing price and what you should pay. This guide provides a ballpark estimate, but it does not factor in your exact scenario or how different listings are equipped.
There may be room for price negotiation.
$38,995 – $85,399
This unit is ranked 9 of 17 by asking price in this group.
The listing price on this unit has changed 2 times.
See the complete price timeline and the rest of this unit's pricing insights.
Alpin Haus
Middletown, NY
Sells faster than 89% of New York RV dealers
Compared with 38 dealers in New York
Grand Design Solitude fifth wheel 378MBS-R highlights:
Middle Bunkhouse/Office
Kitchen Island
Residential Refrigerator
Free Standing Dinette
Outside Beverage Cooler & Grill
Two Power Awnings
The middle bunkhouse in this fifth wheel includes a fold down bunk above a tri-fold sofa that offers seating for an extra living room as well as sleeping space for a bedroom, plus there is a desk to work from and a closet for clothing and supplies making this room multi-functional. You can then retreat to your own master bedroom with a queen bed slide or choose the king option, an LED TV as well as a space prepped for a washer/dryer option. The main living and kitchen area is spacious with dual opposing slides and offers theatre seating and a tri-fold sofa to relax on while watching the LED Smart TV and visiting with the cook in the kitchen that offers a kitchen island, a 24" residential oven, and an oversized pantry to store lots of dry goods and snacks. You will surely enjoy the two power awnings and the outside grill plus beverage cooler while relaxing outdoors.
Each Solitude fifth wheel by Grand Design features a 101" wide-body construction, heavy duty 7,000 lb. axles, frameless tinted windows, and high-gloss gel coat sidewalls. You can camp year around thanks to the Weather-Tek Package that includes a 35K BTU high-capacity furnace, an all-in-one enclosed and heated utility center, and a fully enclosed underbelly with heated tanks and storage. Inside, you'll love the premium roller shades, hardwood cabinet doors, solid surface countertops and sinks, plus residential finishes throughout to make you truly feel at home. Each model also includes a MORryde CRE3000 suspension system, self adjusting brakes, and a MORryde pin box that will provide smooth towing from home to campground. Affordable luxury is possible with the Solitude fifth wheels; choose yours today!
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