The 2008 Newmar Mountain Aire 4528 is a full-featured, long-distance touring motorhome that embodies premium craftsmanship, comfort, and diesel-pusher performance. Designed for discerning RVers who want residential-style living on the road, this coach pairs robust engineering with abundant amenities and thoughtful interior space.

Performance & Build

Built on a Spartan K2 chassis and powered by a Cummins ISM 450 hp diesel engine, the Mountain Aire 4528 delivers strong torque and highway confidence for long hauls. A 10 kW Onan quiet diesel generator keeps your systems running wherever you roam, while automatic leveling jacks, hydraulic systems, and reliable braking components provide ease of use and peace of mind.

Interior & Comfort

With four slide-outs, the 4528 opens up into a spacious living environment that feels like home on wheels. This layout typically includes:

• King-size master bedroom with wardrobe and entertainment space.

• Bath and a half — full rear bathroom plus an additional mid-coach half bath for guests.

• Living area with comfortable seating, entertainment center, and a well-appointed kitchen.

• Washer/dryer combo and wardrobe storage for extended travel convenience.

The interior offers generous headroom and open living space thanks to four power slide-outs, making family travel comfortable and enjoyable.