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Newmar Mountain Aire Motor Home Class A - Diesel RVs For Sale
The Mountain Aire Class A diesel motorhome by Newmar allows you to take luxury with you where you want to go! You can rest and relax inside from the cockpit to the cabin with features that provide the perfect combination of form and function.
The coaches offer on-site dining with a fully equipped kitchen with super polished solid surface countertops, feature raise-panel doors with soft-close hinges, and a large pantry for those longer trips, plus much much more!. Each is built exclusively on the Spartan K3 tag axle chassis with 525 HP making it easy to travel up hills and while towing. The Comfort Drive adaptive steering and standard Mobileye lane tracking, the tire pressure monitoring, the electronic stability control and OnGuard collision mitigation technology among other features provide safety on the road.
Why would you choose a Mountain Aire Class A diesel motorhome by Newmar to travel the country? Because you enjoy the finer things in life!
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Mountain Aire 4118
Newmar Mountain Aire Class A diesel motorhome 4118 highlights: Bath and a Half ... more about Mountain Aire 4118
Specifications
Sleeps 5 Slides 3 Length 41 ft 10 in Ext Width 8 ft 6 in Ext Height 13 ft 2 in Int Height 6 ft 11 in Interior Color Camden, Halstead, Sorrento, Winston Exterior Color Imperial, Nespresso, Thundercloud, Twilight Hitch Weight 15000 lbs GVWR 54000 lbs Dry Weight 42500 lbs Cargo Capacity 11500 lbs Fresh Water Capacity 105 gals Grey Water Capacity 80 gals Black Water Capacity 60 gals Furnace BTU 50000 btu Generator 12.5 Kw Cummins Onan Diesel Fuel Type Diesel Engine Cummins 11.9L Chassis Spartan K3 Tag Axle Horsepower 525 hp Fuel Capacity 150 gals Wheelbase 282 in Available Beds King Torque 1695 ft-lb Refrigerator Type Whirlpool Refrigerator Size 19.7 cu ft Convection Cooking Yes Cooktop Burners 2 Shower Size 40" x 32" Number of Awnings 2 Axle Weight Front 20000 lbs Axle Weight Rear 20000 lbs Axle Weight Tag 14000 lbs Water Heater Type Demand AC BTU 45000 btu TV Info LR Samsung LED TV, BR Samsung LED TV, Overhead 43" Samsung 4K LED TV Awning Info Nova Power Washer/Dryer Available Yes Gross Combined Weight 69000 lbs Shower Type Shower w/Seat Electrical Service 50 amp Similar Floorplans
Mountain Aire Features:
Standard Features (2025)
Exterior
- Full-Paint Masterpiece Finish™ with Cut & Buff with Beta Fusion Protection on Front Cap
- Lighted Newmar Badge in Front Grill
- Convex Exterior Mirrors with Remote Control, Defrost, Turn Signals and Side View Cameras
- Chrome Power Baggage Door Locks, Keyless Entrance Door with Touch Pad and Door Bell
- Entrance Door with Automatic Step
- Rear Hitch for Towing Car
- Assist Handle at Entrance Door
- Mud Flaps
- Rear Protective Tow Guard with Stainless Steel Newmar Name Cutout
- Undercoating
- Hydraulic Leveling Jacks
- Stainless Steel Exterior Trim Pieces and Entrance Door Kick Panel
- Storage Bins in Pegboard Compartment
Optional
- Stainless Steel Trim Kit for Onyx Package
- Stainless Steel Trim Kit for Exterior Compartment Doors
- Flag Pole Bracket
- Storage Tray 24 X 58 Power Location-Bay 2
- Storage Tray 26 X 90 Power Location-Bay 2
- Storage Tray 26 X 91 Non-Power, Location Bay 2
- Storage Tray 27 X 56 Non-Power Location-Bay 2
- Storage Tray 27 X 56 Non-Power Location-Bay 3
- Storage Tray 29 X 58 Power Location-Bay 3
- Storage Tray 40 X 90 Power, Location-Bay 2
- Storage Tray 40 X 90 Power, Location-Bay 3
- Storage Tray 42 X 91 Non-Power, Location-Bay 2
- Storage Tray 42 X 91 Non-Power, Location-Bay 3
- Storage Tray 43 X 56 Non-Power, Location-Bay 3
- Storage Tray 43 X 56 Non-Power, Location-Bay 4
Construction
- Fiberglass Roof and Integrated Gutter Rail
- Gelcoated Fiberglass Exterior Sidewalls, Front and Rear Caps
- Aluminum-Frame Sidewalls & Roof Construction, 16" on Center
- 5/8" Foam Insulation Laminated in Sidewalls & Ceiling
- Polar Pak R19 Batten Insulation on Roof
- Automatic Mechanical Lock Arms on Non Hydraulic Slideout Rooms-Paddle Style
- Egress Door with Ladder System
Chassis
- Spartan K3 Tag Axle 525 HP
- Air Leveling System
- Aluminum Wheels
- Electronic Chassis Information Center in Dash
- Electronic Stability Control
- Cruise Control
- Comfort Drive™ Steering with Power Column & Adjustable Control
- Steering Wheel Nine Function Switch Pod in Center on Spartan® Chassis
- Recessed Fuel Fills with Crossover to Fill from Either Side
- Back-Up Alarm
- Anti-Lock Braking System
- Chassis Battery Disconnect
- Automatic Headlights ON/OFF
- Push Button Engine Start
- Glass Dash Instrumental Panel
- On Guard Collision Mitigation Adaptive Cruise System with Adj. Following Distance Control on Spartan Chassis
- Tire Pressure Monitoring on Tag Axle Chassis
- Mobile Eye Lane Tracking and Lane Departure Warning System
- Valid Digital Glare Free Dash on Spartan® Chassis
- Valid Generation 3 TPMS System on Spartan® Chassis
Optional
- Spartan Chassis Onyx Package
- Curt Spectrum Integrated Brake Control on Spartan Chassis
- Blind Spot Detection
Mechanical and Electrical
Windows, Awnings, and Vents
- Frameless Double-Pane Tinted Safety-Glass Windows
- Fantastic® Vent with Rain Sensor in Kitchen, Bathroom and Enclosed Stool Room
- Hardwood Louvered Cover on Fantastic® Vent in Kitchen
- Skylight Above Shower*
- Girard Package-Two Nova Side Awnings, Slideout Covers, Entrance Door & Power Window Awnings
- One Piece Tinted Windshield
- Driver Side Power Window
- Large Non-Ventilated Living Room and Dinette Windows
Optional
- Kitchen Window
Air Conditioning and Heating
- Three 15K BTU Penguin™ Heat Pump Central Air Conditioners with Remote Control Thermostat on 41’ and 45’ Floor Plans
- Two 15K BTU Penguin™ Heat Pump Central Air Conditioners with Remote Control Thermostat on 38’ Floor Plan
- Dash Heater and Air Conditioner
- Driver & Passenger Dash Overhead Ventilation System
- Wall Mounted Sensors for Heating and Air Conditioning
- Roof Air Conditioning Drainage System
- Electric Radiant Heat Installed Below Main Floor Tile
Electrical
- 10 Kw Cummins Onan® Diesel Generator on 38’ Floor Plans
- 12.5 Kw Cummins Onan® Diesel Generator on 41' and 45' Floor Plans
- 50 Amp Electrical Service with Flexible Cord with Automatic Transfer Switch
- Eight 6-Volt House Batteries
- Battery Disconnect Switch for House Battery
- 10 Watt Solar Panel to Charge Chassis Battery
- 3000 Watt True Sine Inverter
- 12 Volt Auxiliary Receptacle on Dashboard
- Emergency Engine Start Switch
- Engine Block Heater
- Energy Management System
- Exterior Security Lights
- Midship Side Turn Signals
- LED Lights Recessed in Ceiling and Underneath Overhead Cabinets
- Accent Lights in Feature Ceiling, Slideout Fascia Trim and Lambrequins
- LED Lighting in Pull Out Pantry, Kitchen and Bathroom Base Cabinets
- LED Lights in Exterior Storage Compartments on Automatic Switches
- LED Lights Installed Under Door Side Slideouts
- Lights in Wardrobes
- Manually Operated Hold-To-Run Slideout Switch
- Automatic Generator Start on Low Battery or Temperature Setting
- Cable TV Connection
- Interior Courtesy Lights
- USB Charger at Dinette & Bedroom Night Stand
- USB Outlet at Dash for Driver Use
- Power Rewind Wheel with 50’ Cord*
- Recessed Docking Lights
- KIB Touch Screen Interior Light and Shade Controls
- Secondary Multiple Touch Screen in Bedroom
- Silverleaf® Multiplex Electrical Wiring System
- Rozie Remote Internet Connection for Silverleaf Multiplex System
- Newmar App to Control Numerous Features from Personal Device
- Solar Prep with Six Gauge Wire from Roof to House Battery Compartment
- Spare Fuses in Chassis and House Fuse Panels
- Wireless Phone Charger Pad in Driver Area
- Wireless Charging Mat Built into Passenger Console
- 110 Volt Recept in Bed Overhead with Two Pass Through Ports
- 110 Volt/USB Outlet at Head of Each Bunk*
- Dimmable with Adjustable Aim Reading Lights at Head of Bed
- Transfer Switch with Surge Protector
- Dash Radio, Cameras and Monitors to Power-up from both House Batteries and Ignition
Optional
- LED Strip Lighting Installed Under Off Door Side Slideouts
- Four Flexible 100 Watt Solar Panels on Roof
- Lithium Ion 640 AHR Battery System with Two 3000W Pure Sine Inverters
- Lithium Ion 960 AHR Battery System (Three Batteries) with Two 3000W Pure Sine Inverters
Plumbing
- Demand Water System
- Sewage Holding-Tank Rinse
- Dometic® 321 China Bowl Stool or Macerator Stool*
- Aqua Miser Shower System
- Tiled Shower Walls with Glass Door
- Soap Dispenser in Shower
- Fold Down Shower Seat
- Water Filter for Entire Unit
- Exterior Shower
- Auto Fill for Fresh Water Tank
- Power Water Hose Reel
- Hot Water Line to Generator Area*
- Bladder Tank for Water Pump System
Optional
- Assist Handle in Shower
- RV Sanicon Turbo System
Interior
Cabinets and Furniture
- Sable Maple Hardwood Cabinets-Suede Finish
- Concealed Hinges on Cabinet Doors
- Super Polished Solid Surface Countertop in Kitchen with Under Mounted Stainless Steel Sink and Sink Covers
- Super Polished Solid Surface Countertop in Bathroom and Bedroom
- Cooktop Cover Flush, Matching Countertop Material
- Lifts on Bed Top
- Pullout Pantry Shelves*
- Push to Release Drawer Slides in Pantry
- Soft Close Cabinet Doors*
- Pantry with Space for Serving Trays and Bakeware
- Drawers with Dove Tail Sides with Self Closing Full Extension Ball Bearing Guides
- Leather Sofa and Front Seats with Integrated Seat Belts
- Driver Seat with Vibrator for Haptic Feedback
- Driver and Passenger Seats with Power Headrest
- Driver and Passenger Seats Heated with Power-Lumbar, Recline, Footrest and Standard Width Passenger Seat
- Plush Pillow Top Mattress
- Side Hide-A-Bed Sofa with Memory Foam Mattress*
- Full Height Wardrobes Beside Lav*
- Mesh Cell Phone Holder at Each Bunk Bed*
- Molded Silverware Divider Tray
- Dinette Euro Booth with Two Table Leaves and Two Folding Chairs*
- Bed Base Power Incline Retract with R5 Air Mattress on 3825 Floor Plan
Optional
- Morel Maple Hardwood Cabinets—High Gloss or Suede Finish
- Sable Maple Hardwood Cabinets—High Gloss
- Sedona Maple Hardwood Cabinets—High Gloss or Suede Finish
- Summit Maple Hardwood Cabinets—High Gloss or Suede Finish
- Two-Tone Summit Maple and Morel Maple Hardwood Cabinets—High Gloss or Suede Finish
- Two-Tone Summit Maple and Sable Maple Hardwood Cabinets—High Gloss or Suede Finish
- Two-Tone Summit Maple and Sedona Maple Hardwood Cabinets—High Gloss or Suede Finish
- R5 Radius Corner Air Mattress*
- Power Extenda Flex Dinette
- Combination Desk and Dinette with Buffet Table, Two Fixed and Two Folding Chairs
- Dinette Convertible with Two Fixed and Two Folding Chairs that Face Window
- Euro Booth Dinette with Two Table Leaves and Two Folding Chairs
- Two Recliners with Lampstand and Reading Lights
- Two Ottomans*
- Passenger Seat Queen-Size
- 74" Powered Theater Seating
- 84" Powered Theater Seating
- 87" Powered Theater Seating
Appliances
- Stainless Steel 30” Convection Microwave with Air Fryer Feature
- All Electric Cooktop Flush Mount Induction
- Air Horns
- 19.7 Cu. Ft. Whirlpool® Refrigerator
- Splendide Two-Piece Stacked Washer/Dryer
- 3.0 Cf Dometic Freezer on Pullout Tray in Exterior Baggage Compartment*
- Storage Shelf Above Freezer
- Central Vacuum with Tool Kit
Optional
- Dishwasher in Drawer with Stainless Steel Front
- Beverage Center Dual Zone
Interior
- Designer Feature Ceiling and Cathedral Ceiling with Added Height on Rear Bath Floorplans*
- Tile Floor in Kitchen, Bathroom, Bedroom and Living Area
- Auto Motion Power Shades and Lambrequins
- Auto Motion Power Shades for Windshield and Driver/Passenger Side Windows
- Hardwood Window Sills
- Hardwood Raised Panel Interior Passage Doors
- Flush Handles on Swinging Bath Doors
- Interior Assist Handle at Main Entry Door
- Fitted Non-Quilted Bedspread with Accent Pillows
- Safe Located in Bedroom Wardrobe
- Waste Basket in Kitchen Base Under Sink
- Maximized Shoe Storage Shelves Recessed in Rear of Wardrobe
Entertainment
Audio and Video
- Samsung® LED TV in Living and Bedroom Areas* (TV Sizes Vary Per Floor Plan)
- 43" Samsung® 4K LED TV in Front Overhead
- 50" Samsung® 4K LED TV on Televator in Living Area*
- Bose® 500 Subwoofer
- Bose® 900 SoundTouch Soundbar in Living Room
- Xite Dash Radio with Apple CarPlay®, Ultra-Wide 20" Screen with Nav-N-Go Navigation System
- Xite HD 360 Camera System with Predictive Grid Lines and Tri-View Rear Camera
- Rear-View Color Monitor System with Audio
- Winegard Rayzar Automatic Digital TV Antenna
- Satellite Dish Prep on Roof
- Two Bedroom Radio Speakers
- TV Jack and 110-Volt Recept in Door Side Exterior Storage Compartment
- Cat 6 TV Cables
- Infrared Repeater System to Operate Audio and Visual Components
- WiFi Ranger Denali/Spruce LTE
- 10 Bc Fire Extinguisher, Smoke Detector, Propane and Carbon Monoxide Detector
Optional
- Radio SiriusXM® Capability with Antenna (Does not include monthly subscription)
- Exterior Entertainment Center in Sidewall with 43" Samsung® 4K LED TV and Soundbar
- Exterior Entertainment Center in Storage Compartment with 43" Samsung® 4K LED TV and Bose® Soundbar
- WiFi System Everest with Aspen Interior Router
- Winegard Automatic Open Face Satellite Dish-for DISH HD and Bell HD TV
- Winegard Automatic Open Face SWM Satellite Dish-for DIRECTV Std/HD and In-Motion DIRECTV Std, DISH Std/HD
- Winegard Automatic Open Face SWM Satellite Dish-for DIRECTV Std/HD
- Winegard Automatic Open Face Satellite Dish and Winegard In-Motion-for DISH Network
- Winegard Automatic In Motion Dome Satellite Dish
- Extra Monitor on Passenger Side
- Rear Camera (2) Prep for Use with Stacker Trailer
- Universal Toll Module
- Starlink Internet System
See us for a complete list of features and available options!
All standard features and specifications are subject to change.
All warranty info is typically reserved for new units and is subject to specific terms and conditions. See us for more details.
Due to the current environment, our features and options are subject to change due to material availability.
Manu-Facts:
Newmar is a company built around the Christian faith, specifically the beginning of the Mennonite faith in 1525 under the guidance of Ulrich Zwingli, and the founding of the Amish fellowship under Jacob Amman in 1693.
At Newmar, we believe that a motor coach is more than just a vehicle, it’s a passport to countless hours of fun and a lifelong memories taken from quality time spent with family and friends.
For over 50 years, we’ve applied our principles to the creation of motor coaches that have allowed people all over the world to live the RV lifestyle. And we’ll continue to so for countless generations to come. It’s why we take pride in every rivet, weld, and mechanical function.