Walkthrough of 2025 Newmar Mountain Aire 3825
by
Taylor Smith
Apr 18 2025
4k views
Join Taylor Smith for a walkthrough video tour of the 2025 Newmar Mountain Aire 3825 RV, available for purchase at Transwest. This video tour highlights the specifications and features of the 2025 Newmar Mountain Aire 3825, including engine, fuel, and towing capabilities, as well as creature comforts like decor, sleeping quarters, kitchen, and bathroom accommodations, and entertainment. Our friendly and knowledgeable staff is available to answer any additional questions not covered in the RV video tour, and we are happy to help. So, check out the video and feel free to contact Transwest for more information or to schedule an in-person tour of the 2025 Newmar Mountain Aire 3825 or any other RV.
Join Taylor Smith for a walkthrough video tour of the 2025 Newmar Mountain Aire 3825 RV, available for purchase at Transwest. This video tour highlights the specifications and features of the 2025 Newmar Mountain Aire 3825, including engine, fuel, and towing capabilities, as well as creature comforts like decor, sleeping quarters, kitchen, and bathroom accommodations, and entertainment. Our friendly and knowledgeable staff is available to answer any additional questions not covered in the RV video tour, and we are happy to help. So, check out the video and feel free to contact Transwest for more information or to schedule an in-person tour of the 2025 Newmar Mountain Aire 3825 or any other RV.
Featured RV
Sold
2025 Newmar Mountain Aire 3825
at Transwest of Frederick, CO
New Class A
-
19
Holiday Savings!
+0 more2026 Newmar Dutch Star 4081
New Class A at Transwest of Belton, MO
-
Sleeps 2
-
Diesel
-
3 Slide Outs
-
668 Miles
$718,179 msrp -
-
34
2026 Newmar Essex 4569
New Class A at Transwest of Belton, MO
-
Sleeps 3
-
Diesel
-
3 Slide Outs
-
674 Miles
$1,157,073 msrp -
-
6
2026 Newmar Mountain Aire 4118
New Class A at Transwest of Belton, MO
-
Sleeps 3
-
Diesel
-
3 Slide Outs
-
665 Miles
$942,350 msrp -
-
Sold
31
-
Coming Soon
-
Coming Soon
2026 Newmar Mountain Aire 3825
New Class A at Transwest of Frederick, CO
-
Sleeps 4
-
3 Slide Outs
-
About the Newmar Mountain Aire 3825
- Sleeps 4
- Diesel
- 3 Slide Outs
- 3' 2''
The 2025 Mountain Aire isn’t just performance; it’s about making your travel life easier. Built on the Spartan® K3 chassis with a passive steer tag axle, it helps with tight turns and makes handling easier than ever. A 525-horsepower Cummins® turbo diesel engine gives you the muscle to tow up to 15,000 pounds without breaking a sweat.
Specifications
- Type
- Class A
- Year
- 2025
- Make
- Newmar
- Model
- Mountain Aire
- Submodel
- 3825
- Chassis Brand
- Spartan
- Stock ID
- 5N250035
- VIN (Last 6)
- 095881
- Status
- Sold
- Condition
- New
- Living Quarters
- No
Amenities
- Living Room Amenities
-
- Tile Flooring
- Accent Lighting
- Power Shades
- Dining Table w/Chairs
- TV
- Home Theater System
- Theater Seating
- Kitchen Amenities
-
- Accent Lighting
- Central Vac
- Dishwasher
- Fantastic Fan
- Lower Cabinets
- Microwave/ Convection Oven
- Pantry
- Power Shades
- Refrigerator Residential
- Single Sink
- Solid Surface Counters
- Tile Flooring
- Upper Cabinets
- Electric Cooktop
- Stainless steel appliances
- Kitchen Appliances
-
- Convection Microwave
- Induction cooktop
- Living Area Seating Options
-
- Sofa Sleeper
- Bedroom Amenities
-
- Accent Lighting
- Home Theatre
- King Bed
- Power Shades
- Tile Flooring
- TV
- Closet
- Dresser
- Additional Beds
-
- Sofa Sleeper
- Bathroom Amenities
-
- Medicine Cabinet
- Shower
- Shower Seat
- Skylight
- Single Sink
- Linen Storage
- Macerator Toilet
- Cab Amenities
-
- OnGuard™ Collision Mitigation Adaptive Cruise System with Adj. Following Distance Control
- Power mirrors w/defrost and turn signals
- Rear and Side View Cameras
- Cruise Control
- Comfort Drive Steering
- Push Button Start
- Touchscreen
- Radio
- Apple Carplay
- Android Auto
- Navigation
- General Amenities
-
- Dual Pane Windows
- Fire Extinguisher
- LP, smoke and carbon monoxide detectors
- Washer/Dryer Stackable
- Central Vacuum
Exterior
- Roof Type
- Fiberglass
- Number of Slide Outs
- 3
- Awning
- Roof
- Number of Awnings
- 2
- Number of Emergency Exits
- 1
Interior
- Interior Height
- 6
- Entry Flooring
- Tile
- Sleeping Capacity
- 4
- Master Bedroom Bed Size
- King
- Master Bedroom Bed Type
- Standard
- Master Bedroom Flooring
- Tile
- Number of Bathrooms
- 1 1/2
- Bath Flooring
- Tile
- Dining Table
- Euro Booth Dinette
- Living Room Flooring
- Tile
- Kitchen Flooring
- Tile
- Kitchen Refrigerator Type
- Residential Refrigerator
- Kitchen Refrigerator Size(ft)
- 19.7
Systems
- Battery Type
- AGM
- Battery Size
- 600
- Shore Power Size
- 50 Amp
- Inverter
- Yes
- Solar
- Yes
- Generator
- Yes
- Water Heater Type
- Hydronic
- Number of ACs
- 2
- AC Rating (BTU)
- 15,000
- Heating System
- Hydronic
- Generator Make
- Onan
- Generator Size (kW)
- 10000
- Black Water Capacity (gal)
- 60
- Fresh Water Capacity (gal)
- 105
- Gray Water Capacity (gal)
- 80
Dimensions & Weights
- Height
- 13' 2''
- Width
- 7' 9''
- Overall Length
- 3' 2''
- Empty Weight
- 40,569
- GVWR (lbs)
- 54,000
- UVW (lbs)
- 41,000
- Payload Capacity (lbs)
- 13,000
- Tongue Weight (lbs)
- 1,500
- Hitch Capacity (lbs)
- 15,000
Engine & Chassis
- Engine Make
- Cummins
- Fuel Capacity (gal)
- 150
- Fuel Type
- Diesel
- Horse Power
- 525
- Transmission Make
- Allison
- Transmission Model
- 4000 MH
- Transmission Type
- 6-Speed Automatic
- Drive Train
- Tag Axle
- Jack Type
- Hydraulic
Disclaimer: Not every vehicle includes every feature or option listed. Please verify all features and options with your salesperson before purchase.
Floor plan
Disclaimer: This floor plan is for general reference. Actual features and styling could differ.
2025 Newmar Mountain Aire 3825 Floor Plan Floor Plan
Video Created by Taylor Smith
RV Sales Representative at Transwest Truck Trailer RV SpecialistHello, my name is Taylor Smith. I have worked at Transwest for about two years but have only been a salesman for the last year. Before I moved into sales, I was part of the service team, which gives me a unique insight into the transition of ownership.
Buying an RV at Transwest means that we will do our absolute best to make your experience successful. It is important to me that even after you have signed and paid that you still feel as if you can reach out to me at any time. Having a solid relationship with my customers is a priority for me. From helping you find the right coach for your wants and needs to help find solutions to the issues that come up while you are enjoying your ideal coach, I want to ensure that all my customers know that they are important.
Whether you are just starting out on your RV search or you are ready to write a check, I am happy to help.
2025 Newmar Mountain Aire Features
-
Power meets precision
Newmar’s STAR Foundation keeps your ride quiet, while Comfort Drive™ steering takes the strain out of long hours of driving. On the outside, you’ll find the BASF® Masterpiece Finish, flush-mounted slide-outs, and deep-set frameless windows that look sharp. With OmniView™ cameras, docking lights, and powered storage trays, every setup feels so effortless. -
Comfort surrounds you
Inside the Mountain Aire, everything is there with a purpose. Premium hardwood cabinetry, tile floors, and soft accent lighting create a warm and welcoming atmosphere. A large living area welcomes you with theater seating, a Euro-style booth dinette, and a 50-inch 4K TV, paired with a high-end Bose® soundbar and subwoofer. -
Mobile kitchen
The Mountain Aire’s kitchen is built to handle everything from quick bites to full meals. Solid surface countertops, a deep dual-basin sink, and handcrafted cabinetry are standouts. You’ll get a removable True Induction cooktop, convection microwave, Fisher & Paykel dishwasher, and a full-size fridge. With adjustable pantry trays and smooth-gliding drawers, everything stays organized and within easy reach. -
Rest, reset, recharge
The bedroom offers A+ comfort with a king-size bed, built-in storage, and details throughout. A 43-inch 4K TV sits across from the bed, with wardrobes, drawers, and hidden compartments. Nightstands feature outlets, USB ports, and pass-throughs for charging gear or devices. You can sleep in and adjust the lights and shades from your phone or bedside panel. -
Bathroom, upgraded
The Mountain Aire includes a full rear bath and a half bath mid-coach. The main bath features a tile-lined shower with a teak seat, while the coach-wide Aquaview Aqua Miser system helps conserve water throughout your trip. Dual vanities, solid surface countertops, and soft-close drawers give room to space out your toiletries.
Frequently Asked Questions
How many floor plans are there for the 2025 Mountain Aire?
There are five total floor plans available: 3823, 3825, 4118, 4551, and 4595.
How much can the Mountain Aire tow?
The 2025 Mountain Aire has a 15,000-pound towing capacity so that you can bring along a trailer, toad, or stacker with confidence.
How many people can sleep in the Mountain Aire?
Four people have designated sleeping areas in the Mountain Aire.
Who manufactures the Mountain Aire?
Newmar has been setting the standard for Class A diesel motorhomes since 1968, and the Dutch Star is one of its most iconic creations.
Our Customers Say It Best
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Integrity
The Transwest Difference
It's not always easy to find a motorhome that fits your unique needs away from home. At Transwest, we're committed to finding you the Recreational Vehicle unit that meets the goals of you and your family. Whether you're a frequent, spontaneous, full-time, or weekend traveler, we work to provide you with the quality, comfort, and reliability you need to stay on the road.
We carry only the highest quality makes in Recreational Vehicles that are guaranteed to give you a luxurious experience on the road. Spacious 5th Wheels are sure to satisfy your inner weekend warrior, and Emerald Luxury Coaches offer uniqueness and specialized craftsmanship. For all the comforts of home, look no further than Class A and Super C motorcoaches. Class B or C motorhomes give you flexibility on the road.
For 25 years, Transwest has been proactive about finding better crafted and more efficient transportation solutions. As a family-owned company, we understand the importance of relationships. We stay in close communication with our customers throughout every step of the process: purchasing or leasing, financing, maintaining, and reselling. We also offer a state-of-the-art body shop to keep you on the road. Our mission is to be a one-stop-shop for all your RV and motorhome needs.
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