2025 Keystone Cougar 316RLS vs 2025 Heartland Bighorn 3760EL

Detailed Comparison

Before committing to the 2025 Keystone Cougar 316RLS or the 2025 Heartland Bighorn 3760EL, it pays to understand exactly where each one shines and where it falls short.

Starting with size, the Keystone Cougar 316RLS measures 30.0 ft long and tips the scales at 13,400 lbs dry weight. The Heartland Bighorn 3760EL comes in at 35.5 ft with a dry weight of 13,300 lbs. That gives the Heartland Bighorn 3760EL roughly 5.5 extra feet of length.

The Keystone Cougar 316RLS sleeps 6 while the Heartland Bighorn 3760EL accommodates 8. Slide-outs play a role in livability: the Keystone Cougar 316RLS has 1 and the Heartland Bighorn 3760EL has 4.

For boondocking enthusiasts, tank sizes matter. Fresh water capacity goes to the Heartland Bighorn 3760EL at 96 gallons versus 81 gallons. Solar-wise, you get 600W on the Keystone Cougar 316RLS and 300W on the Heartland Bighorn 3760EL. Battery banks are 250 Ah and 300 Ah.

At $123,000 MSRP for the Keystone Cougar 316RLS and $123,000 for the Heartland Bighorn 3760EL, the Heartland Bighorn 3760EL saves you $0. With only a 0% price difference, the choice comes down to features rather than cost.

If you're traveling with a family, look for the model with more sleeping positions and better storage. Boondockers: look at the fresh water capacity and solar/battery systems — they determine how long you can stay out. For the full-time RV lifestyle, every gallon of tank capacity and every inch of counter space counts.

Ultimately, both rigs have their merits — test drive each one and see which floor plan speaks to your lifestyle.