Grech RV Terreno-Ion

Grech RV Terreno-Ion

Ready for adventure but unwilling to compromise on comfort or performance? The 2026 Grech RV Terreno-ion AWD blends mobility with innovation, offering a premium motorhome experience on a compact 22-foot platform. With refined interiors, all-wheel drive stability, and the all-new GRECH POWER™ system, this campervan is purpose-built for travelers who want to go farther with confidence and style.

This Grech RV icon is more versatile than ever—and yes, there’s a Terreno RV for sale at Mountain Luxe RV that checks every box.

Two Smart Floor Plans, One Impressive Platform

The 2026 Terreno-ion is presented in two thoughtfully designed layouts, both built on the Mercedes-Benz Sprinter 3500XD chassis. The Tour Plan seats up to seven and features a memory foam power sofa bed, while the Twin Bed Plan seats six and includes two rear twin beds that convert into a sleeping area.

Both floor plans span 22 feet in length and deliver a refined Class B living space with premium finishes and space-saving functionality. To complement its sleek profile, the Terreno-ion is available in three exterior color options—Iridium Silver, Grey White, and Tenorite Grey—each carefully selected to enhance the coach’s contemporary styling and on-road presence.

Luxury That Moves With You

Step inside the Terreno-ion and discover an interior finished in soft-touch materials, Ultraleather seating, handcrafted hardwood cabinets, and elegant European veneers. The woven vinyl flooring and full insulation offer quiet comfort, while ambient LED lighting and Automotion power shades add both mood and practicality. The integrated table mount system offers flexibility for work or dining, and the rear seating converts into a generous 66″ x 76″ bed.

The galley doesn’t cut corners either. A farmhouse-style sink with pull-out sprayer pairs with a solid surface countertop, and the kitchen setup includes a microwave/convection/air fryer combo, a two-burner induction cooktop, and a refrigerator/freezer—everything needed for meals on the move.

Grech RV Terreno-Ion

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Next-Generation Power System: GRECH POWER™

This year’s most exciting update is the debut of GRECH POWER™, a complete reengineering of the Terreno-ion’s power infrastructure. Highlights include:

  • Lithionics 51V Battery System with 16,896-watt hours and rapid charging.
  • 3,000W Victron Inverter for smooth, silent energy conversion and remote monitoring.
  • ARCO Zeus Alternator & Regulator, now Bluetooth-capable and more efficient.
  • Garmin SERV+™ Control System with Timberline integration and full diagnostic support.
  • Starlink Roam satellite internet—pre-installed and standard across all 2026 models.
  • Inline chassis battery charger, roof-mounted solar, and an upgraded Fusion® audio system.

Whether you’re off-grid or parked at a campground, this new system offers improved reliability, expanded power capacity, and smart connectivity at your fingertips.

Comfortable Living, On and Off the Grid

This Class B motorhome includes a fully enclosed wet bath with a window and privacy shade, a molded sink and vanity, a ceramic toilet with macerator, and a retractable clothesline. It’s a private space intended for convenience and daily use.

Heating and cooling are handled by the Timberline diesel-powered hot water and heating system and a 15,000 BTU air conditioner with heat pump. A power lift vent fan with a rain sensor helps regulate airflow, and tank monitors keep you informed on water usage.

Fresh (26 gallons), gray (27 gallons), and black (13 gallons) tanks are all 12V heated, making this coach capable of handling year-round adventures.

Safety and Performance from Mercedes-Benz

Under the hood, the Terreno-ion is powered by a 4-cylinder diesel engine with 211 horsepower and 332 lb-ft of torque, paired with a 9-speed 9G-TRONIC transmission. Mercedes-Benz safety technologies include:

  • DISTRONIC Active Distance Assist
  • Lane-Keeping, Attention Assist, and Brake Assist
  • Blind Spot Assist and Parking Assist
  • LED headlamps and a wet wiper system
  • Swiveling, heated, power front seats
  • MBUX multimedia with a 10.25″ touchscreen

All this, combined with Grech’s polished aluminum wheels, custom fiberglass body kit, and air suspension, creates a driving experience that’s both smooth and secure.

Find a 2026 Terreno RV for Sale at Mountain Luxe RV

If you’re looking for a balance of refined comfort, efficient design, and AWD performance, at Mountain Luxe RV, you can find a Terreno RV for sale that exceeds expectations. With both floor plans and the GRECH POWER™ standard, this model is ready to meet the demands of modern RV life.

To schedule a tour or request pricing, contact us directly by phone at (877) 658-9378 or e-mail: info@mountainluxerv.com. Our team is here to help you find the coach that fits your road ahead—wherever it leads.

And don’t forget to watch our latest videos on the Mountain Luxe RV YouTube Channel.

Grech RV Terreno-Ion Inventory

2025 Grech RV Terreno-Ion Tour AWD

2025 Grech RV Terreno-Ion Tour AWD

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2026 Grech RV Terreno-Ion AWD Tour

2026 Grech RV Terreno-Ion AWD Tour

247 mi · $287,900 ·
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