2025 Thor Aria 3401 vs 2024 Tiffin Allegro RED 37PA

Detailed Comparison

If you're weighing the 2025 Thor Aria 3401 against the 2024 Tiffin Allegro RED 37PA, you're looking at two solid contenders. Here's how they stack up.

Dimensionally, you're looking at 35.5 ft for the Thor Aria 3401 and 36.0 ft for the Tiffin Allegro RED 37PA. The Thor Aria 3401 carries an extra 1,000 lbs, which affects tow vehicle requirements and fuel economy.

The Thor Aria 3401 sleeps 4 while the Tiffin Allegro RED 37PA accommodates 7. Slide-outs play a role in livability: the Thor Aria 3401 has 3 and the Tiffin Allegro RED 37PA has 4.

For boondocking enthusiasts, tank sizes matter. Fresh water capacity goes to the Thor Aria 3401 at 97 gallons versus 67 gallons. Solar-wise, you get 300W on the Thor Aria 3401 and 300W on the Tiffin Allegro RED 37PA. Battery banks are 300 Ah and 100 Ah.

At $321,000 MSRP for the Thor Aria 3401 and $316,000 for the Tiffin Allegro RED 37PA, the Tiffin Allegro RED 37PA saves you $5,000. With only a 2% 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.

Remember, the perfect RV is the one you'll actually use. Pick the one that excites you most and hit the road.