The 2018 Thor Aria 3901 is a luxury Class A diesel motorhome designed to deliver a perfect balance of power, comfort, and style for travelers seeking premium experiences on the road.Built on a Freightliner XC chassis with a Cummins 6.7L ISB-XT engine delivering 360 hp and 800 lb-ft of torque, this coach shifts through a six-speed Allison automatic transmission. The bus-style exterior spans approximately 39 feet 11 inches in length. With three power slideouts and a 20-foot power awning, the living space opens wide to create roomy interiors and generous outdoor shade.

Inside, the cockpit blends functionality and comfort, featuring leatherette reclining/swivel captain’s chairs, a touchscreen dash with navigation and camera systems, and integrated instrument displays for systems monitoring. The living area expands via two slideouts to incorporate a sofa, a dinette, and theater recliners, along with an entertainment center that includes multiple LED TVs and a fireplace. The third slide extends the kitchen, which is outfitted with a 16 cu ft stainless steel residential refrigerator, a two-burner induction cooktop, a convection microwave, solid-surface countertops, and a double-bowl stainless sink with pull-down faucet.

This Aria offers a bath-and-a-half layout: a mid-coach half bath and a rear full bath with a glass-door shower, vanity, linen storage, and optional washer/dryer. The master suite hosts a king-size “Tilt-A-View” inclining bed, bedside nightstands with USB charging, overhead cabinetry, and its own 32-inch LED TV.

Other features enhancing this motorhome include full-body paint, power leveling jacks, air-ride suspension, LED lighting throughout, fiberglass exterior caps, frameless tinted windows, and a Cummins Onan 8,000-watt diesel generator with automatic start. Storage is abundant in basement compartments with pass-through tray access. In all, the 2018 Thor Aria 3901 offers a powerful diesel platform combined with upscale amenities, expansive living areas, and utility to support extended travel or full-time RV life.