2026 Grand Design Lineage Series M 25FW

GRAND DESIGN LINEAGE Class C Motorized RV

Meet the GRAND DESIGN LINEAGE Class C Motorized RV built on a Mercedes-Benz Sprinter 4500 cab chassis, designed for confident highway driving and comfortable everyday living. With a sleek exterior, smart tech, and a well-equipped interior, this 2026 model is ready to elevate your next road trip.

Chassis, Powertrain & Driving Confidence

Powered by a 2.0 Ltr inline 4-cylinder high output twin-turbo diesel producing 208HP and 332 lb-ft, paired with a 9G-TRONIC automatic transmission and rear wheel drive. Safety and stability features include Electronic Stability Program (ESP), Active Brake Assist, Crosswind Assist, Attention Assist, and Hill Start Assist.

Key Features & Specifications

• Wheelbase: 170 inches
• GVWR / GCWR: 12,125 lbs. / 15,250 lbs.
• Engine: 2.0 Ltr inline 4-cylinder high output twin-turbo diesel (208HP / 332 lb-ft)
• Transmission / Drive: 9G-TRONIC automatic / rear wheel drive
• Exterior lighting: LED tail, brake, marker, turn, and backup lights; LED high performance headlamps
• Climate: Thermotronic automatic climate control; ducted 15K BTU A/C with 12K heat pump

Comfort, Tech & Interior Living

Inside, the MBUX multimedia system features a 10.25-inch touchscreen with Apple CarPlay and Android Auto. Enjoy heated and adjustable leather steering, plus driver/passenger seats with swivel, heating, power adjustments, armrests, storage pockets, and lumbar support. The cabin also includes Thermotronic automatic climate control and a multifunctional leather steering wheel (heated, adjustable angle).

Entertainment continues with a 32-inch 12V LED smart TV in the living area and bedroom, along with Rockford Fosgate interior sound system components and a powered subwoofer. A COBRA cab-over bunk adds extra versatility, with privacy curtain and A/C.

Kitchen, Bed & Bath Highlights

The kitchen is equipped with a 10 cu/ft 12V 3-door refrigerator, a 2-burner stove with glass cover and overhead range hood, and an air fryer/convection microwave oven. The bedroom features a 70-inch x 80-inch king bed with under-bed storage and privacy curtain. The bathroom includes a custom shower surround and pan with linear slot drain, a lighted skylight-shower dome, a retractable shower door, and a porcelain toilet.

Utilities & Power System

For off-grid capability, enjoy an 1,800-watt pure sine wave inverter, a 4500kW LP generator with auto start capabilities, and a StarLink satellite internet setup. Climate and water support include a Truma Aqua Go Comfort on-demand water heater, 12V water pump (4 gallons per minute), and tank monitoring via SureLevel. Solar power is provided by (3) 180-watt Merlin solar panels with a 30-amp controller.

Stock #25959 (2026, floorplan 25FW) is available now. Contact the dealer or schedule a viewing to see this GRAND DESIGN LINEAGE Class C Motorized RV in person and explore how it fits your travel style.