2026 Newmar Grand Star 3948, Luxury and innovation come together in the 2026 Newmar Grand Star 3948. Designed for travelers seeking the power of a Super C chassis combined with the craftsmanship and comfort Newmar is known for, this impressive coach delivers exceptional performance and residential luxury for life on the road. Built on the Freightliner S2RV chassis and powered by a 6.7L Cummins turbo diesel engine producing 360 horsepower and 800 lb ft of torque, the Grand Star 3948 offers confident towing capability, impressive durability and outstanding ride quality. Paired with the Allison 3000MH six speed transmission and a 12,000 pound hitch, this Super C is ready for cross country adventures. Inside, three slideouts create an expansive residential living area highlighted by premium furnishings, elegant cabinetry and modern styling. The open floorplan provides plenty of room to entertain guests or simply relax after a day of travel. A 74 inch Comfort Lounge sofa, booth dinette and television on a Televator create an inviting environment for extended stays. The beautifully appointed kitchen offers generous workspace with an expandable countertop, residential refrigerator, three burner cooktop and convection microwave with air fryer capability. Thoughtful storage solutions and premium finishes make meal preparation enjoyable wherever your travels take you. One of the most desirable features of the 3948 floorplan is the bath and a half layout. The convenient mid coach half bath is ideal for guests, while the rear master suite features a spacious full bath, large shower and optional washer and dryer. The king bed and abundant wardrobe space provide all the comforts of home. Large holding tanks, an 8 kW generator and premium Newmar construction make the Grand Star an excellent choice for extended travel and full time RV ownership. From weekend escapes to months on the road, this luxury Super C is built to exceed expectations. Contact us today to learn more or schedule your personal walkthrough. Full Spec Sheet Chassis Freightliner S2RV Chassis Engine Cummins 6.7L Turbo Diesel Horsepower 360 HP Torque 800 lb ft Transmission Allison 3000MH Six Speed Automatic Exterior Length 39 ft 11 in Exterior Width 8 ft 5 in Exterior Height 13 ft Interior Height 6 ft 11 in Gross Vehicle Weight Rating 35,200 lb Fuel Capacity 100 gallons Fresh Water Capacity 150 gallons Gray Water Capacity 100 gallons Black Water Capacity 45 gallons Hitch Capacity 12,000 pounds Generator 8.0 kW Generator Number of Slideouts 3 Sleeping Capacity Up to 7 people Air Conditioning 15,000 BTU Roof Air Conditioner with Automatic Climate Control Furnace 35,000 BTU Furnace Water Heater Truma Comfort Plus Continuous Flow Water Heater Kitchen Features Residential 18 cubic foot refrigerator, three burner cooktop, expandable countertop, convection microwave with air fryer, premium cabinetry and abundant storage. Bathroom Features Bath and a half floorplan with rear full bathroom and spacious sho