2025 Keystone Alpine 3700FL vs 2025 Keystone Sprinter 3530FWDEN

Detailed Comparison

Two noteworthy RVs face off: the 2025 Keystone Alpine 3700FL and the 2025 Keystone Sprinter 3530FWDEN. From dimensions to amenities, here's the full breakdown.

Dimensionally, you're looking at 37.5 ft for the Keystone Alpine 3700FL and 31.0 ft for the Keystone Sprinter 3530FWDEN. The Keystone Sprinter 3530FWDEN carries an extra 4,900 lbs, which affects tow vehicle requirements and fuel economy.

Capacity-wise, expect to sleep 4 in the Keystone Alpine 3700FL versus 8 in the Keystone Sprinter 3530FWDEN. With 2 and 5 slide-outs respectively, the parked floor plans differ significantly.

Tank capacities are a key off-grid consideration. The Keystone Alpine 3700FL carries 72 gal of fresh water, 41 gal gray, and 49 gal black. The Keystone Sprinter 3530FWDEN offers 75 gal fresh, 46 gal gray, and 50 gal black. The Keystone Sprinter 3530FWDEN has the edge for extended dry camping.

Budget-wise, the Keystone Alpine 3700FL is listed at $91,000 compared to $117,000 for the Keystone Sprinter 3530FWDEN. The $26,000 difference could cover upgrades, accessories, or several seasons of camping.

For family camping trips, the larger floor plan and additional berths make a real difference. For boondocking, the model with superior solar and battery setup will keep you comfortable off the grid longer. If you're going full-time, the larger tanks and more robust build quality matter enormously.

Whichever you choose, you'll be getting a capable rig. Just make sure to inspect one in person before signing.