Walkthrough of 2025 Newmar Northern Star 4037

2025 Newmar Northern Star 4037: A Quick Look

The 2025 Newmar Northern Star 4037 represents a significant new addition to Newmar’s lineup, positioned as an accessible diesel pusher for those considering their first motorhome in this segment. This 40-foot model is the largest of four new Northern Star floor plans, which also include a 34-foot option designed to accommodate national park access. It is built on a Freightliner Custom Chassis, powered by a 360 horsepower 6.7-liter Cummins Diesel Engine, and offers a 10,000 lb towing capacity.

This coach is designed with practicality and comfort in mind, featuring a drop-down bunk for additional sleeping capacity, making it suitable for larger families.

Exterior Features

Front & Chassis

The front of the Northern Star includes upgraded high beams and a camera system integrated with the new Sony touchscreen dash display, providing blind-spot visibility. The coach rides on Michelin X Coach 252 ADR 22.5-inch tires. Diesel fuel fills are conveniently located on both sides of the coach.

Storage & Utilities

Storage bays are carpeted, feature a lower latch, and require a key for locking. Notably, the coach incorporates Newmar’s Star Foundation, which involves welding the coach structure to the chassis rails to enhance overall strength, ride quality, and interior stability.

An outdoor entertainment system includes a Samsung TV and a Bose soundbar, complemented by 12-volt and USB charging ports. A built-in Road Vac system is accessible from an exterior bay and can be utilized throughout the coach. The wet bay features a stainless steel backsplash, an outdoor shower, and a water filter system (winterized in the walkthrough). It is equipped with 50-amp shore power, a surge guard protector, and pre-wiring for an exterior TV on the driver's side. The coach also houses six NAPA deep cycle batteries and a substantial propane tank. An 8kW Onan diesel generator is located at the front of the coach and includes an accessible control panel with spare fuses.

Interior Overview

The exterior graphic package for this unit is Aqua Stone, complementing the Ashford interior decor. This decor option features a two-tone cabinet design.

Living Area & Slide-Outs

Even with the slides retracted, the 4037 floor plan allows for unobstructed movement from the entry to the refrigerator and bathroom, avoiding the need for sideways maneuvering. Once the slides are extended, including a full wall slide, the interior opens up significantly, creating an expansive living space.

The living area includes a booth dinette and two couches, offering comfortable seating for up to seven people. A power lift TV is situated for viewing from various seating positions. A central control panel provides access to the Truma AquaGo on-demand hot water system, awning controls, security lights, exterior step functions, and power management systems including Xantrax, tank levels, and generator controls. Additional storage cabinets are integrated into the living area.

Overhead Bunk

Above the cockpit, a key-locked drop-down bunk offers an additional sleeping area. This bunk is rated for a 500-pound capacity and can accommodate two people, providing a practical solution for families.

Cockpit & Driving Aids

The cockpit features an LED dash and a Freightliner steering wheel, designed for intuitive control of the drive, neutral, reverse, and engine brake functions (manual or automatic) without removing hands from the wheel. Standard amenities include automatic leveling jacks, multiple cup holders, heated mirrors with power adjustments, dome lights, and a house-to-chassis battery boost function. A wireless charger is also provided.

A new Sony touchscreen infotainment system supports Apple CarPlay and Android Auto, Bluetooth connectivity, SiriusXM, and displays the rear-view camera with reverse guidelines. This system incorporates physical buttons for volume and home functions, offering tactile control while driving. The cockpit also includes controls for visor shades, fan speeds, air horn, generator start, entry door lock, and climate control. The driver and passenger seats are partly electric and partly manual, and both swivel to face the living area when parked. The coach is equipped with the Mobile Eye system, providing lane tracking and departure alerts for enhanced safety.

The Bottom Line

The 2025 Newmar Northern Star 4037 stands out as an accessible entry point into the diesel pusher market, particularly for first-time owners. Its combination of the robust Star Foundation chassis, the integrated Mobile Eye safety system, and practical features like the full-access floor plan with slides in, the high-capacity drop-down bunk, and the upgraded Sony dash with physical controls, positions it as a thoughtfully equipped option for active RVers.