2026 Grand Design Lineage Series M 25TK

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—engineered for confident highway travel and comfortable, tech-forward living. With a 170-inch wheelbase and a 2.0L inline 4-cylinder high output twin-turbo diesel (208HP/332 lb-ft), this 2026 model pairs efficient power with a modern, upscale interior.

Power, Handling, and Driver Comfort

Designed for everyday ease, the LINEAGE features a 9G-TRONIC automatic transmission with rear wheel drive, plus active safety and driver-assist technologies. You’ll also enjoy a Thermotronic automatic climate control system, heated and adjustable leather steering, and power heated swivel driver/passenger seats with lumbar support.

• Engine: 2.0L inline 4-cylinder high output twin-turbo diesel (208HP/332 lb-ft)
• Transmission: 9G-TRONIC automatic / Rear Wheel Drive
• GVWR: 12,125 lbs. (GCWR 15,250 lbs.)
• Safety & Assist: Active Brake Assist, Crosswind Assist, Attention Assist, Hill Start Assist
• Infotainment: MBUX multimedia system with 10.25" touchscreen (Apple CarPlay / Android Auto)
• Climate: Thermotronic automatic climate control

Built for the Road: Construction & Exterior

From the MORryde tubular steel chassis halo upfit to the laminated block-foam insulation, the conversion emphasizes strength and comfort. Dual pane European acrylic windows, an integrated-screen entry door, and a single slideout with an Eternabond slideout roof help create a refined living space. Exterior lighting includes LED tail, brake, marker, turn, and backup lights, plus high-performance LED headlamps.

Entertainment, Cameras, and Outdoor Convenience

Enjoy practical features like the Girard armless awning with wind sensor, slideout topper awning, and a Rockford Fosgate exterior sound system with marine speakers. For added confidence, the truck includes driver and back-up cameras, plus a 40" exterior 12V LED smart TV compartment with GFCI receptacle and HDMI outlet.

Living Space, Kitchen, and Sleeping

The interior is finished in dove with natural teak wood grain cabinetry and soft-close storage throughout. The kitchen offers 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. In the bedroom, you’ll find a 70" x 80" king bed, privacy curtain, and a 32" LED smart TV.

Power, Water, and Essential Systems

For off-grid capability, the RV includes an 1,800 watt pure sine wave inverter, a 4-point hydraulic leveling system, and a 15K BTU ducted A/C with 12K heat pump. Water heating is handled by a Truma Aqua Go Comfort on-demand water heater, and tank monitoring is supported by SureLevel tank level monitoring. Starlink satellite internet and three 180-watt Merlin solar panels with a 30-amp controller round out the modern utility setup.

Ready to see the GRAND DESIGN LINEAGE Class C Motorized RV in person? Contact the dealer today or schedule a viewing to experience the space, features, and road-ready design firsthand.