2026 Grand Design Lineage Series M 25TK

GRAND DESIGN LINEAGE Motorized RV

Meet the GRAND DESIGN LINEAGE Motorized RV built on a Mercedes-Benz Sprinter 4500 cab chassis, designed for confident highway cruising and comfortable, tech-forward living. With a 170-inch wheelbase and a GVWR of 12,125 lbs., this Class C conversion pairs strong diesel performance with thoughtful climate, entertainment, and safety features—ideal for weekend getaways or longer road trips.

Chassis, Power & Driver Confidence

Under the hood, you’ll find a 2.0 Ltr inline 4-cylinder high output twin-turbo diesel rated at 208HP and 332 lb-ft, matched with a 9G-TRONIC automatic transmission and rear wheel drive. The driver-focused package includes Thermotronic automatic climate control, heated and adjustable leather steering, and power heated swivel driver/passenger seats with lumbar support. For added confidence, the vehicle includes Active Brake Assist, Crosswind Assist, Attention Assist, Hill Start Assist, Electronic Stability Program (ESP), and multiple LED lighting upgrades.

• Mercedes-Benz Sprinter 4500 cab chassis with 170-inch wheelbase
• 2.0 Ltr inline 4-cylinder twin-turbo diesel (208HP / 332 lb-ft)
• 9G-TRONIC automatic transmission with rear wheel drive
• Thermotronic automatic climate control
• LED tail, brake, marker, turn, and backup lights
• Park brake lever with folding design

Comfort, Connectivity & Interior Living

Inside, the MBUX multimedia system features a 10.25-inch touchscreen with AM/FM radio plus Apple CarPlay and Android Auto. The living area is equipped with a 32-inch 12V LED smart TV (living room and bedroom) and a Rockford Fosgate audio setup with powered subwoofer. For privacy and comfort, cockpit privacy shades help reduce glare, while soft-touch padded ceilings and square LED lighting keep the cabin bright and inviting.

Kitchen, Bedroom & Bath Highlights

The kitchen includes 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. The bedroom offers a 70-inch x 80-inch king bed with privacy curtain and USB charging ports. In the bath, enjoy a custom shower surround with linear slot drain, a lighted skylight-shower dome, a matte black retractable shower door, and a porcelain toilet.

Utilities, Power & Storage

Power and utilities are built for real-world use, including a 1,800 watt pure sine wave inverter, a 4,500kW NPS LP generator with auto start, and a ducted 15KBTU A/C system with 12K heat pump. Water comfort is supported by a Truma Aqua Go Comfort on-demand water heater, plus a 12V water pump rated at 4 gallons per minute. For monitoring and convenience, the SureLevel tank monitoring system and Firefly Integrations touch screen command center are included.

Ready to see this 2026 GRAND DESIGN LINEAGE Motorized RV in person? Contact the dealer today or schedule a viewing to experience the layout, features, and build quality firsthand.