2025 Thor Aria 3901

About the 2025 Thor Aria 3901

Step inside the 2025 2025 Thor Aria 3901 and you will immediately understand why Class A motorhomes remain the gold standard for full-time RV living. Thor has poured decades of expertise into every detail of this coach.

With an overall length of 35.0 feet, 8.0 feet wide and standing 13.0 feet tall, the 2025 Thor Aria 3901 has a dry weight of 16,800 lbs, and a gross vehicle weight rating of 20,800 pounds, leaving you 4,000 lbs of cargo carrying capacity. Equipped with one slide-out, the 2025 Thor Aria 3901 provides noticeably more elbow room at your campsite.

Accommodating up to 5 sleepers, the 2025 Thor Aria 3901 is built for family camping trips and group getaways. Multiple sleeping zones ensure everyone has their own space, from dedicated bunks to convertible living areas that transform as the day winds down.

Off-grid capability is well supported thanks to a generous 91-gallon fresh water supply, 41 gallons of gray water holding, a 37-gallon black water tank. Electrical independence comes via a 600W solar panel setup, 350 amp-hours of battery storage, a 2000-watt inverter for household AC power. A 13,500 BTU air conditioner keeps things cool in summer heat, and 16,000 BTU of furnace output tackles chilly evenings. Food storage is handled by a 3-way absorption fridge. Outside, a 21.0-foot power awning provides welcome shade for outdoor dining and relaxation.

The drivetrain is built around a Cummins ISB 6.7L, mounted on a Freightliner XCS chassis, rated at 397 horsepower. With a 125-gallon Diesel tank, long-distance travel is practical without constant fuel stops.

At $313,000, this is a premium investment that delivers a top-tier Class A experience for discerning travelers who demand excellence in every detail. The 2025 Thor Aria 3901 suits small families and couples who occasionally bring friends along. It handles the needs of three to four travelers without feeling overcrowded or requiring compromises on comfort.

Looking at the complete picture, the 2025 2025 Thor Aria 3901 delivers on the promise of quality RV living. It is the kind of rig that makes you excited to plan the next trip before the current one is even over, which is perhaps the highest compliment an RV can earn.

The 2025 Thor Aria 3901 represents the pinnacle of motorhome luxury, combining spacious living quarters with powerful road performance.

The floor plan maximizes every inch of the 35-foot body with 1 slide-out(s). Dual AC units totaling 13,500 BTU keep the interior comfortable in any climate, while the 16,000 BTU furnace handles cold weather with ease.

Standard features include a 600-watt solar panel system, 350 Ah battery bank, and 2,000-watt inverter for dry camping freedom. The 397 HP Cummins ISB 6.7L engine provides ample power for mountain passes and highway merging.