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New 2026 Newmar Mountain Aire 3825

Class A Diesel|North Canton, OH| Stock# 347755

MSRP: $945,659

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Newmar Mountain Aire Class A diesel motorhome 3825 highlights:

  • Bath and a Half
  • Euro Booth Dinette
  • King Bed
  • Whirlpool Refrigerator
  • Triple Slides

This motorhome has everything you need for a comfortable road trip! The master suite has a king bed slide for a good night's rest across from a dresser with a Samsung LED TV and shirt wardrobes on either side. Attached to the bedroom is your very own full rear bathroom which has a 42" x 35" angled shower next to a wardrobe with drawers and a Splendid washer and dryer next to the vanity sink. The chef will have everything they need to prepare delicious home cooked meals including a stainless steel 30" convection microwave with air fryer feature and a Whirlpool 19.7 cu. ft. refrigerator to keep the perishables fresh, plus the half bathroom is by the kitchen for quick bathroom breaks while cooking. Enjoy your meals at the Euro booth dinette (non-sleeper) and relax on the 74" hide-a-bed sofa while watching your favorite movies on the Samsung LED TV on power lift!

Explore the world in peak luxury with any one of these Newmar Mountain Aire Class A diesel motorhomes! They are exclusively built on a Spartan K3 tag axle chassis with a 525 HP and 1,695 lb./ft. of torque to make them easy to drive. Their industry-exclusive full paint Masterpiece Finish comes in four different color options each of which will turn heads down the highway. Hydraulic leveling jacks make set up quick and easy, and the fiberglass roof with integrated gutter rail will help to keep water away from your unit. The aluminum-frame sidewalls and roof construction are covered by the gel-coated fiberglass exterior sidewalls, front, and rear caps. You will also find finer amenities, features, and options all throughout the interiors. Come find the best one for you today!

Specifications

RV Details

  • Sleeps4
  • Slides3
  • Length38 ft. 10 in.
  • Width8 ft. 6 in.
  • Height13 ft. 2 in.
  • Int. Height6 ft. 11 in.
  • Dry Weight41000 lbs.
  • Hitch Weight15000 lbs.
  • GVWR54000 lbs.
  • VIN4VZVU1E14TC096265

Tanks & HVAC

  • Fresh Water1 Tank(s) | 105 gal.
  • Black Water1 Tank(s) | 60 gal.
  • Gray Water1 Tank(s) | 80 gal.
  • AC30000 BTU
  • HeatAutomatic 50000 BTU
  • Water HeaterOn Demand
  • Electrical50 amps

Appliances

  • Awnings2 | Powered Retractable Awning
  • BedsKing (x1), Convertible (x1)
  • Showerangeled 42" x 35" in.
  • RefrigeratorFull-Size
  • Cooktops | Microwave2 | Yes
  • Washer/Dryer PreppedYes
  • TVsLR Samsung LED TV, BR Samsung LED TV, Overhead 43" Samsung 4K LED TV
  • Axles | Tire Size365/70R 22.5

Vehicle Details

  • FuelDiesel | 150 gal.
  • ChassisSpartan K3
  • EngineCummins / I6 Diesel Pusher
  • Horsepower525 hp
  • Torque1695 ft-lbs.

All Amenities

King bed
Convertible hide-a-bed sofa
Convection cooking
Two-burner cooktop
Washer/dryer
Center kitchen
Front living area
Rear/center bath
Center bedroom
Full-size electric refrigerator
Powered retractable awnings (2)
Euro booth dinette with sleeper
Theater seating
Cummins I6 Diesel Pusher engine
Spartan K3 chassis
Automatic heater
Plastic/glass shower
TV on power lift

General RV works hard to ensure the accuracy of all its listings however we are not responsible for any misprints, typos, or errors found in our website pages. Manufacturer-provided pictures, specifications and features may be used as needed. Inventory shown may be only a partial listing of the entire inventory. Please contact us at 888-436-7578 for availability as our inventory changes rapidly.

*All RV prices exclude tax, title, registration and fees, including documentary service fees. All payments are with approved credit through dealer lending source. Advertised monthly payment is based on 20% cash down, plus tax, title, registration and fees, at 7.99% APR for 96 months on finance amounts under $10K, at 7.99% APR for 144 months on finance amounts from $10K to $25K, at 7.99% APR for 180 months on finance amounts from $25K to $50K, and at 7.99% APR for 240 months on amounts over $50K. $79 monthly payment based on purchase price of $9,999 with 20% down at 8.24% APR for 218 months. $399 monthly payment based on purchase price of $69,995 with 25% down, at 6.99% APR for 240 months. For select models only. Rate and payments are subject to change at any time. Conditions apply. See dealer for details.