2025 Keystone Cougar 316RLS vs 2024 Keystone Avalanche 338GK

Detailed Comparison

Head to head, the 2025 Keystone Cougar 316RLS and the 2024 Keystone Avalanche 338GK each bring unique strengths to the table. Which one deserves a spot in your driveway?

The Keystone Cougar 316RLS measures 30.0 ft in length at 13,400 lbs, compared to the Keystone Avalanche 338GK's 41.5 ft and 8,900 lbs. GVWR ratings sit at 17,700 lbs and 11,800 lbs respectively.

For sleeping arrangements, the Keystone Cougar 316RLS offers room for 6 and the Keystone Avalanche 338GK can handle 6. The Keystone Avalanche 338GK benefits from 2 slide-out(s), expanding the interior when parked.

Looking at self-sufficiency, the Keystone Cougar 316RLS packs 81 gal of fresh water and 600W of solar. The Keystone Avalanche 338GK counters with 67 gal fresh water and 400W solar.

Price is often the deciding factor. The Keystone Avalanche 338GK starts at $116,000 MSRP, while the Keystone Cougar 316RLS commands $123,000 — a $7,000 gap.

Families with kids will appreciate the extra sleeping capacity and living space. Off-grid campers should pay close attention to solar wattage, battery capacity, and tank sizes. Full-timers should prioritize tank capacity, storage, and overall living comfort.

Take these specs as a starting point, then go see them in person — there's no substitute for stepping inside.

When it comes to water management, tank capacity plays a major role in how long you can stay off the grid. The 2025 Keystone Cougar 316RLS holds 81 gallons of fresh water compared to 67 gallons in the 2024 Keystone Avalanche 338GK, giving it a 14-gallon advantage for extended dry camping. Gray water capacity favors the 2025 Keystone Cougar 316RLS at 60 gallons versus 50 gallons, which directly affects how often you need to find a dump station. The 2024 Keystone Avalanche 338GK also leads in black water capacity with 44 gallons compared to 40 gallons, an important consideration for families or full-time travelers.

Electrical systems are increasingly important as RVers rely on more electronics and appliances. The 2025 Keystone Cougar 316RLS comes equipped with 600W of factory solar compared to 400W on the 2024 Keystone Avalanche 338GK, a meaningful difference for off-grid energy harvesting. Battery storage gives the edge to the 2025 Keystone Cougar 316RLS with 250Ah versus 200Ah, translating to longer run times for lights, fans, and charging devices overnight. The 2025 Keystone Cougar 316RLS's 2500W inverter can handle heavier loads than the 1500W inverter in the other unit, which matters if you plan to run a microwave, coffee maker, or hair dryer without shore power.

For solo travelers and couples who value maneuverability, the 2025 Keystone Cougar 316RLS with its more compact footprint will be easier to navigate through tight campgrounds and mountain passes. Both models sleep 6, making them equally viable for small families or couples who occasionally host guests. Full-time RVers who spend extended periods off-grid will benefit most from the 2025 Keystone Cougar 316RLS's power setup and the 2025 Keystone Cougar 316RLS's water reserves, as these directly impact daily comfort and independence from hookups. Weekend warriors and seasonal campers who primarily stay at full-hookup campgrounds may find that the differences in tank sizes and power systems matter less, allowing them to focus on floor plan preference and overall comfort instead.

From a value perspective, the 2024 Keystone Avalanche 338GK at $116,000 MSRP represents a $7,000 savings over the 2025 Keystone Cougar 316RLS at $123,000, a 6% price difference. Breaking it down per sleeping position, the 2025 Keystone Cougar 316RLS costs roughly $20,500 per berth while the 2024 Keystone Avalanche 338GK comes in at $19,333 per berth. On a cost-per-foot basis, the 2025 Keystone Cougar 316RLS runs about $4,100 per linear foot versus $2,795 for the 2024 Keystone Avalanche 338GK, which helps contextualize the value each unit delivers for its size. Since both models come from Keystone, buyers can expect consistent build quality, a shared dealer network, and comparable warranty coverage, which simplifies the after-purchase ownership experience.