2025 Keystone Cougar 368MBI vs 2024 Alliance RV Avenue 30RLS

Detailed Comparison

Shopping for an RV and torn between the 2025 Keystone Cougar 368MBI and the 2024 Alliance RV Avenue 30RLS? We've put together a detailed spec comparison to help you decide.

Starting with size, the Keystone Cougar 368MBI measures 29.0 ft long and tips the scales at 13,000 lbs dry weight. The Alliance RV Avenue 30RLS comes in at 35.0 ft with a dry weight of 13,500 lbs. That gives the Alliance RV Avenue 30RLS roughly 6.0 extra feet of length.

Capacity-wise, expect to sleep 10 in the Keystone Cougar 368MBI versus 4 in the Alliance RV Avenue 30RLS. With 5 and 1 slide-outs respectively, the parked floor plans differ significantly.

Tank capacities are a key off-grid consideration. The Keystone Cougar 368MBI carries 89 gal of fresh water, 61 gal gray, and 36 gal black. The Alliance RV Avenue 30RLS offers 51 gal fresh, 78 gal gray, and 45 gal black. The Keystone Cougar 368MBI has the edge for extended dry camping.

Budget-wise, the Alliance RV Avenue 30RLS is listed at $153,000 compared to $155,000 for the Keystone Cougar 368MBI.

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.

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