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2026 Newmar Mountain Aire 3825 Sold
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See More Newmar Class A RVs for Sale

2026 Newmar Mountain Aire 3825

Used Class A RV

at Transwest of Grand Junction, CO

Sold

967 views

6 favorites

967 views

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2026 Newmar Mountain Aire 3825
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Used Class A RV

at Transwest of Grand Junction, CO

Sold

  • Sleeps 4
  • 3 Slide Outs
  • 1,516 Miles

The 2026 Mountain Aire packs big-time power, earns all the style points, and delivers on its high-end comfort in a coach that’s just under 39 feet long. It’s the shortest tag-axle in Newmar’s lineup, built on the SpartanⓇ K3 chassis with a 525-horsepower CumminsⓇ engine and 15,000-pound towing capacity. Headed cross-country or out for the weekend? No worries, this RV gives you the control, performance, and space to make every mile feel like home.

Inside and out, the Mountain Aire knows how to make an entrance. From premium finishes to smart tech, it provides everything travelers look for in a high-end motorhome. You can find the 2026 Mountain Aire now at Transwest RV in Colorado, where you can see it for yourself.

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Specifications
Type
Class A
Year
2026
Make
Newmar
Model
Mountain Aire
Submodel
3825
Stock ID
5U260043
VIN (Last 6)
095982
List Price
$709,117
Status
Sold
Condition
Used
Living Quarters
No
Mileage
1,516
Amenities
Living Room Amenities
  • TV
Kitchen Appliances
  • Induction cooktop
  • Convection Microwave
  • Stainless Steel Sink
Outdoor Kitchen Appliances
  • Exterior Freezer
Living Area Seating Options
  • Sofa Sleeper
Bedroom Amenities
  • Wardrobe
  • Dresser
  • TV
Additional Beds
  • Sofa Sleeper
Bathroom Amenities
  • Medicine Cabinet
  • Vanity
  • Single Sink
  • Shower
  • Shower Seat
Cab Amenities
  • Comfort Drive Steering
  • Cruise Control
  • Digital Dash
  • Heated Driver Seat
  • Heated Passenger Seat
  • Leather Seats
  • Mobileye® Lane Tracking and Departure System
  • OnGuard™ Collision Mitigation Adaptive Cruise System
  • Push Button Start
  • Satellite Radio
  • Wireless Charging Mats
  • Radio
General Amenities
  • Washer/Dryer Stackable
  • Outside Entertainment
  • Dual Pane Windows
  • Engine Block Heater
  • Starlink Internet System
Exterior
Number of Slide Outs
3
Number of Awnings
1
Interior
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
Lithium
Battery Size
640
Shore Power Size
50 Amp
Inverter
Yes
Generator
Yes
Water Heater Type
Hydronic
Number of ACs
2
AC Rating (BTU)
15,000
Heating System
Hydronic
Black Water Capacity (gal)
60
Fresh Water Capacity (gal)
105
Gray Water Capacity (gal)
80
Dimensions & Weights
Height
13
Width
8
Empty Weight
41,139
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
Jack Type
Hydraulic

Disclaimer: Not every vehicle includes every feature or option listed. Please verify all features and options with your salesperson before purchase.

Mountain Aire 3825 Floor plan

Disclaimer: This floor plan might not reflect what exactly will be on this vehicle.

2026 Newmar Mountain Aire 3825
Download Floor Plan

2026 Newmar Mountain Aire 3825 Floor Plan

2026 Newmar Mountain Aire 3825

Video Walkthrough

Disclaimer: This video is for general reference. Actual features and styling could differ.

Preview image of the linked video

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Our Customers Say It Best

2026 Newmar Mountain Aire Features

Newmar
Download the Brochure
  • 2026 Mountain Aire's exterior

    Designed to impress

    The Mountain Aire brings bold curb appeal with Newmar’s signature full-paint finish and the optional Onyx Package, which adds dark accents throughout. Dual power slide trays, a slide-out Dometic freezer with optional fridge upgrade, and lighted exterior storage make it both aesthetically pleasing and functional.
  • The 2026 Newmar Mountain Aire's cockpit

    Pilot your ride

    This coach is equipped with Newmar’s Comfort DriveⓇ steering system, providing a smooth and more controlled ride. The anti-glare digital dash displays vehicle information clearly, while a 360° stitched camera system improves visibility in tight turns and narrow spaces. Co-pilot controls feature a touchscreen display for clear navigation and camera views, making this setup ideal.
  • The Mountain Aire's comfy cabin

    Room to relax

    There’s tons of space to stretch out inside the Mountain Aire. The power theater seats feature hidden storage and illuminated cupholders, providing a cozy spot to kick back and relax. The Euro-style dinette features a hidden leaf extension and includes two folding chairs to seat extra guests comfortably.
  • Galley inside the Newmar Mountain Aire

    A convenient kitchen

    The Mountain Aire’s kitchen comes ready for meal prep, both inside and out. A portable dual-burner induction cooktop plugs in easily outdoors or on the counter, and a WhirlpoolⓇ convection microwave with built-in air fryer makes cooking easy. The single-basin sink is paired with solid-surface covers and cutting boards, and the dishwasher is tucked away.
  • Cozy bed in the Newmar Mountain Aire

    Your bedroom retreat

    In the back of the coach, the bedroom is spacious, bright, and is calling your name. A king-size bed with large nightstands features a built-in power station, while wardrobes with six full drawers provide ample storage. A SamsungⓇ Smart TV is positioned for easy viewing, and controls for lighting and shade are conveniently within arm’s reach.
  • Spacious shower in the Newmar Mountain Aire

    Elevated bathrooms

    This coach includes a spacious rear full bath and a convenient mid-ship half bath. In back, you’ll find a tiled shower with a rain-style head, built-in bench, extra headroom, and a water-saving system for off-grid travel. A stacked washer and dryer are also tucked into the rear. The half bath adds flexibility for guests.
    Review

    2026 Newmar Mountain Aire 3825 Walkthrough Tour

    Some coaches just feel right. The 2026 Newmar Mountain Aire 3825 blends bold looks, smart features, and an easy-to-navigate layout that takes the hassle out of travel from the very beginning. It&rsq...
    Read More
    a preview image of the linked video

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    Disclosure

    This calculation does not consider title, registration, taxes, and other fees. It also does not consider personal circumstances such as employment status and personal credit history, which may have an impact on interest rates that an individual may qualify for. This calculation is intended to provide an estimate and are for informational purposes only.

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    Grand Junction, CO Image 1

    This RV can be found at our Transwest location near Grand Junction, CO

    2224 Sanford Dr
    Grand Junction, CO 81505

    (970) 256-1081

    Location Details

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    Who builds the Mountain Aire?

    The 2026 Mountain Aire is built by Newmar, a trusted name in luxury motorhomes for more than 50 years.

    What kind of engine does the Mountain Aire have?

    The Mountain Aire is powered by a 525-horsepower Cummins X12 diesel engine with 1,695 lb-ft of torque, paired with a Spartan K3 tag-axle chassis.

    Is the Mountain Aire a good fit for full-time RV living?

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    RVs / Class A / Store / Grand Junction, CO / 2026 Newmar Mountain Aire 3825

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    2026 Newmar Mountain Aire 3825
    Transwest  Logo

    2026 Newmar Mountain Aire 3825

    Transwest of Grand Junction, CO
    2224 Sanford Dr
    Grand Junction, CO 81505
    (970) 256-1081

    Sold

    Description

    The 2026 Mountain Aire packs big-time power, earns all the style points, and delivers on its high-end comfort in a coach that’s just under 39 feet long. It’s the shortest tag-axle in Newmar’s lineup, built on the SpartanⓇ K3 chassis with a 525-horsepower CumminsⓇ engine and 15,000-pound towing capacity. Headed cross-country or out for the weekend? No worries, this RV gives you the control, performance, and space to make every mile feel like home.

    Inside and out, the Mountain Aire knows how to make an entrance. From premium finishes to smart tech, it provides everything travelers look for in a high-end motorhome. You can find the 2026 Mountain Aire now at Transwest RV in Colorado, where you can see it for yourself.

    Floor Plan

    2026 Newmar Mountain Aire 3825 Floor Plan

    Specifications

    • Type Class A
    • Year 2026
    • Make Newmar
    • Model Mountain Aire
    • Submodel 3825
    • Stock ID 5U260043
    • VIN (Last 6) 095982
    • List Price $709,117
    • Status Sold
    • Condition Used
    • Living Quarters No
    • Mileage 1,516

    Amenities

    • Living Room Amenities: TV.
    • Kitchen Appliances: Induction cooktop, Convection Microwave, Stainless Steel Sink.
    • Outdoor Kitchen Appliances: Exterior Freezer.
    • Living Area Seating Options: Sofa Sleeper.
    • Bedroom Amenities: Wardrobe, Dresser, TV.
    • Additional Beds: Sofa Sleeper.
    • Bathroom Amenities: Medicine Cabinet, Vanity, Single Sink, Shower, Shower Seat.
    • Cab Amenities: Comfort Drive Steering, Cruise Control, Digital Dash, Heated Driver Seat, Heated Passenger Seat, Leather Seats, Mobileye® Lane Tracking and Departure System, OnGuard™ Collision Mitigation Adaptive Cruise System, Push Button Start, Satellite Radio, Wireless Charging Mats, Radio.
    • General Amenities: Washer/Dryer Stackable, Outside Entertainment, Dual Pane Windows, Engine Block Heater, Starlink Internet System.

    Exterior

    • Number of Slide Outs 3
    • Number of Awnings 1

    Interior

    • 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 Lithium
    • Battery Size 640
    • Shore Power Size 50 Amp
    • Inverter Yes
    • Generator Yes
    • Water Heater Type Hydronic
    • Number of ACs 2
    • AC Rating (BTU) 15,000
    • Heating System Hydronic
    • Black Water Capacity (gal) 60
    • Fresh Water Capacity (gal) 105
    • Gray Water Capacity (gal) 80

    Dimensions & Weights

    • Height 13
    • Width 8
    • Empty Weight 41,139
    • 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

    • Jack Type Hydraulic
    Mountains

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