2027 MODEL YEAR · CLASS B MOTORHOME
Rangeline 21PS
- family
- adventure
- off-grid
Rangeline combines camper van versatility with Airstream craftsmanship, delivering flexible living space, smart storage, and modern power for wherever adventure calls.
Specifications
- Length
- 20' 11"
- Height
- 9' 5"
- Base weight
- 7,661 lb
- GVWR
- 9,350 lb
- Net Carrying Capacity (NCC)
- 1,689 lb
- Tow capacity
- 3,500 lb
- Chassis
- RAM ProMaster 3500
- Engine
- 3.6L Pentastar V6
- Horsepower
- 276 hp
- Torque
- 250 lb-ft
- Drivetrain
- FWD
- Fuel type
- Gas
- Transmission
- 9-Speed Automatic
- Sleeps
- 4
- Seats
- 4
- Fresh / gray / black
- 28 / 19 / 12
- Fuel tank
- 24 gal
- Solar
- 200 W
- Battery
- 3.5 kWh
- Inverter
- 3000 W
- Shore power
- 30 A
- Off-grid score
- 48 / 100
- MSRP
- $161,400
How long off-grid?
Boondocking endurance for this motorhome — modeled from its real 3.5 kWh battery, 200 W solar, and 28 gal fresh tank.
House battery runs down first under these assumptions.
How this is calculated
Power: usable battery = nameplate kWh × 0.8 (blended depth-of-discharge). Daily load presets — light ≈ 1,500, moderate ≈ 2,800, heavy ≈ 5,000 Wh/day — from published boondocking power budgets, excluding air conditioning (no motorhome house battery runs rooftop AC for long). Solar harvest = panel watts × peak-sun-hours (summer 5.5, spring/fall 4.0, winter 2.5) × 0.7 system derate. Water: per-person daily use (light 3 / moderate 5 / heavy 8 gal fresh; gray ≈ 80% of fresh; black from toilet use) against the real tank sizes. Endurance is whichever runs out first. Estimates for planning — your real usage varies.
Strengths
- Best NCC in Rangeline (1,689 lb)
- Sleeps 4
- Entry-level Airstream motorhome price
Trade-offs
- FWD only (no AWD)
- Smaller battery than Interstate
Gallery
