Chassis
Spartan® K3, Tag Axle, 525 HP
Overview
Horse Power
525
HP
Length
38-45
FT
Torque
1695
LB/FT
Axles
3
Tag Axle Equipped
Floor Plans
4
Exterior
4
Optional Onyx Package Available
Interior Décor
4
Design Options
Exterior
BLACKTHORN
DILLON
EMMONS
Interior Décor
CAMDEN INTERIOR
HALSTEAD INTERIOR
SORRENTO INTERIOR
Interior Cabinets
SUMMIT MAPLE
MOREL MAPLE
SEDONA MAPLE
Floor Plans
- 3823
- 3825
- 4118
- 4551
2026 Mountain Aire / 3823
Starting at $861,212
- FLOOR PLAN
- COCKPIT
- CABIN
- GALLEY & DINETTE
- BEDROOM
- BATHROOM
- EXTERIOR & STORAGE
3823
Cockpit
- Italian Leather Heated Driver and Passenger Seats
- Industry-First Comfort Drive™ Adaptive Steering
- Mobileye® Lane Tracking and Departure System
- OnGuard™ Collision Mitigation Adaptive Cruise System
- Valid Digital Glare-Free Dash
- Xite Dash Radio
- Wireless Charging Mats
Cabin
- Opposing 68" Hide-A-Bed Sofa and 74" Jack-Knife Sofa in Italian Leather (Theater Seating Upgrade Available)
- 50" Samsung® 4K LED TV on Televator
- 43" Samsung® 4K LED TV in Front Overhead
- Maple Hardwood Cabinets in High Gloss or Suede Finish
- Two 15K BTU Penguin™ Heat Pump Central Air Conditioners
Galley & Dinette
- Euro Booth Dinette (Other Seating Options Available)
- 19.7 Cu. Ft. Whirlpool® Refrigerator
- Convection Microwave
- All-Electric Recessed-Mount Induction Cooktop
- Polished Solid-Surface Countertops
Bedroom
- King-Size Bed with Pillow Top Mattress
- Samsung® LED TV
- Lighted Wardrobe
- Splendide® Two-Piece Stacked Washer and Dryer
- Safe Behind TV
Bathroom
- Midship Full Bath with Fully Tiled Shower Walls and Floor
- Aqua Miser® Shower System
- Cathedral Ceiling in Shower for Added Height
Exterior & Storage
- Basement Storage
- 3.0 Cu. Ft. Dometic® Freezer on Pull-Out Tray
2026 Mountain Aire / 3825
Starting at $864,024
- FLOOR PLAN
- COCKPIT
- CABIN
- GALLEY & DINETTE
- BEDROOM
- BATHROOM
- EXTERIOR & STORAGE
3825
Cockpit
- Italian Leather Heated Driver and Passenger Seats
- Industry-First Comfort Drive™ Adaptive Steering
- Mobileye® Lane Tracking and Departure System
- OnGuard™ Collision Mitigation Adaptive Cruise System
- Valid Digital Glare-Free Dash
- Xite Dash Radio
- Wireless Charging Mats
Cabin
- 74" Hide-A-Bed Sofa in Italian Leather (Theater Seating Upgrade Available)
- 50" Samsung® 4K LED TV on Televator
- 43" Samsung® 4K LED TV in Front Overhead
- Maple Hardwood Cabinets in High Gloss or Suede Finish
- Two 15K BTU Penguin™ Heat Pump Central Air Conditioners
Galley & Dinette
- Patio-Side Euro Booth Dinette (Other Seating Options Available)
- 19.7 Cu. Ft. Whirlpool® Refrigerator
- Convection Microwave
- All-Electric Recessed-Mount Induction Cooktop
- Polished Solid-Surface Countertops
Bedroom
- King-Size Bed with Pillow Top Mattress
- Samsung® LED TV
- Lighted Wardrobe
Bathroom
- Bath and a Half Model with Luxurious Full-Bath in Rear and Half-Bath Midship
- Master Bath Features Fully Tiled Shower Walls and Floor
- Aqua Miser® Shower System
- Cathedral Ceiling in Shower for Added Height
- Splendide® Two-Piece Stacked Washer and Dryer
Exterior & Storage
- Basement Storage
- 3.0 Cu. Ft. Dometic® Freezer on Pull-Out Tray
2026 Mountain Aire / 4118
Starting at $866,984
- FLOOR PLAN
- COCKPIT
- CABIN
- GALLEY & DINETTE
- BEDROOM
- BATHROOM
- EXTERIOR & STORAGE
4118
Cockpit
- Italian Leather Heated Driver and Passenger Seats
- Industry-First Comfort Drive™ Adaptive Steering
- Mobileye® Lane Tracking and Departure System
- OnGuard™ Collision Mitigation Adaptive Cruise System
- Valid Digital Glare-Free Dash
- Xite Dash Radio
- Wireless Charging Mats
Cabin
- Opposing 84" Hide-A-Bed Sofa and 62" Jack-Knife Sofa in Italian Leather (Theater Seating Upgrade Available)
- 50" Samsung® 4K LED TV on Televator
- 43" Samsung® 4K LED TV in Front Overhead
- Maple Hardwood Cabinets in High Gloss or Suede Finish
- Three 15K BTU Penguin™ Heat Pump Central Air Conditioners
Galley & Dinette
- Euro Booth Dinette (Other Seating Options Available)
- Pull-Out Cabinet for Additional Prep Space
- 19.7 Cu. Ft. Whirlpool® Refrigerator
- Convection Microwave
- All-Electric Recessed-Mount Induction Cooktop
- Polished Solid-Surface Countertops
Bedroom
- King-Size Bed with Pillow Top Mattress
- Samsung® LED TV
- Lighted Wardrobe
Bathroom
- Bath and a Half Model with Luxurious Full-Bath in Rear and Half-Bath Midship
- Master Bath Features Fully Tiled Shower Walls and Floor
- Aqua Miser® Shower System
- Cathedral Ceiling in Shower for Added Height
- Splendide® Two-Piece Stacked Washer and Dryer
Exterior & Storage
- Basement Storage
- 3.0 Cu. Ft. Dometic® Freezer on Pull-Out Tray
2026 Mountain Aire / 4551
Starting at $887,704
- FLOOR PLAN
- COCKPIT
- CABIN
- GALLEY & DINETTE
- BEDROOM
- BATHROOM
- EXTERIOR & STORAGE
4551
Cockpit
- Italian Leather Heated Driver and Passenger Seats
- Industry-First Comfort Drive™ Adaptive Steering
- Mobileye® Lane Tracking and Departure System
- OnGuard™ Collision Mitigation Adaptive Cruise System
- Valid Digital Glare-Free Dash
- Xite Dash Radio
- Wireless Charging Mats
Cabin
- Opposing 87" Hide-A-Bed Sofa and 68" Jack-Knife Sofa in Italian Leather (Theater Seating Upgrade Available)
- 50" Samsung® 4K LED TV on Televator
- 43" Samsung® 4K LED TV in Front Overhead
- Maple Hardwood Cabinets in High Gloss or Suede Finish
- Three 15K BTU Penguin™ Heat Pump Central Air Conditioners
Galley & Dinette
- Euro Booth Dinette (Other Seating Options Available)
- 19.7 Cu. Ft. Whirlpool® Refrigerator
- Convection Microwave
- All-Electric Recessed-Mount Induction Cooktop
- Polished Solid-Surface Countertops
Bedroom
- King-Size Bed with Pillow Top Mattress
- Samsung® LED TV
- Lighted Wardrobe
- Safe in Wardrobe
Bathroom
- Bath and a Half Model with Luxurious Full-Bath in Rear and Half-Bath Midship
- Master Bath Features Dual Sinks and Fully Tiled Shower Walls and Floor
- Aqua Miser® Shower System
- Cathedral Ceiling in Shower for Added Height
- Splendide® Two-Piece Stacked Washer and Dryer
Exterior & Storage
- Basement Storage
- 3.0 Cu. Ft. Dometic® Freezer on Pull-Out Tray
Explore the Mountain Aire Difference
The 2026 Mountain Aire redefines luxury motor coaching with its attention to detail and state-of-the-art features. Ideal for adventurers seeking a blend of comfort and durability. Download the brochure to learn more.
LUXURY WITHOUT LIMITATIONS
Power, Comfort and Accessibility in Perfect Harmony
The 2026 Mountain Aire delivers the perfect blend of power and luxury in a size that fits your travel style. With a responsive 525 horsepower engine built on a Spartan® K3 tag chassis, you'll go places other RVers can't while enjoying all the comforts you deserve. Whether navigating tight resort entrances or climbing mountain passes, the Mountain Aire performs with confidence while keeping you surrounded in premium comfort.
Finishes & Décors
Make a statement everywhere you travel with our exclusive Full-Paint Masterpiece™ Finish exterior. Inside, discover thoughtful design enhancements including new Chestnut wood options in both suede and high-gloss finishes that create a sophisticated home away from home on every adventure.
Comfort & Sophistication
Experience exceptional driving confidence with Comfort Drive™ Adaptive Steering and the STAR Foundation's rock-solid stability. Stay connected through the 15" high-resolution glass dash display and updated ATC control system with Bluetooth connectivity to the Newmar App.
World Class Entertainment
Transform every stop into an opportunity for connection with premium entertainment options inside and out. With four Samsung® 4K LED TVs throughout your coach, including the standard exterior entertainment center, you'll enjoy premium viewing wherever your adventures take you.
2026 Mountain Aire Gallery
- Gallery Images
