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2026 Newmar Mountain Aire 4118Stock #: D3186

Retail MSRP: $904,047 Make an Offer!
For this week's lowest price, Click Here
Vehicle Summary
Chassis Spartan K3 Tag Axle 
Generator Onan 10.0 KW Diesel 
Engine Cummins X12 525HP Diesel 
Category Class A - Diesel 
Mileage New 
Slide Out Full Wall/3 
Fuel Diesel 
Condition New 
Interior Color Winston 
Exterior Color Fairweather 


2026 Newmar Mountain Aire 4118 Full Wall/3 Slide-Out Luxury Class A Diesel Pusher Motorhome. The 2026 Mountain Aire combines superior craftsmanship with advanced technology, offering spacious layouts and luxurious amenities to enhance your travel experiences. Adventurous. Luxurious. Dependable. Perfect for those who enjoy exploring in style. The centerpiece of the best selling 4118 Floor Plan is its spacious kitchen, The midship half-bath is perfect for guests, and protects the privacy of the king suite. This coach is brand new with an MSRP of over $904K, but Our Price is slashed down too low to advertise! Contact us for our LOWEST Price! Item #D3186 DeMartini RV Sales

VIN: 096120

MSRP Sheet

2026 Newmar Mountain Aire 4118 MSRP Sheet 2026 Newmar Mountain Aire 4118 MSRP Sheet

DeMartini RV Sales works with the top banks and lenders in order to get you the best rates and most flexible RV financing available. We are professionals at negotiating RV finance terms with the banks and take the hassle out of the process for you. Give us a try and you can discover how affordable and easy financing an RV can be. We can work to get you the following finance benefits:

  • Same-day RV financing
  • Finance terms up to 20 years
  • Affordable payments that fit your budget

Talk to one of our Finance Managers today, financing an RV may actually be a better option than paying cash with today's low rates. Your loan interest can possibly be tax deductible as a second-home mortgage interest. We would be happy to take a look at your situation and explain your finance options. Give us a call at 1.800.576.1921 or fill out our secure online credit application to get started today!

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*Price does not include sales tax or registration. Non-California residents are not subject to California sales tax or registration.

**DeMartini RV Sales is not responsible for any typos or errors on our webpages. We believe manufacturer supplied specifications on this site to be accurate at the time of posting. However, specifications, standard equipment, model availability, options, fabrics, and colors are subject to change without notice. Some vehicles may be pictured with equipment that is only available as an option at an extra cost or unavailable on some models. You should confirm equipment and availability by speaking with a salesperson.