2025 Tiffin Allegro Bus 40IP vs 2024 Tiffin Zephyr 45PZ

Detailed Comparison

Two popular options on many shoppers' shortlists — the 2025 Tiffin Allegro Bus 40IP and the 2024 Tiffin Zephyr 45PZ. Let's see how they compare across the specs that matter most.

In terms of footprint, the Tiffin Allegro Bus 40IP stretches 29.0 ft while the Tiffin Zephyr 45PZ spans 44.5 ft. Weight-wise, the Tiffin Allegro Bus 40IP is the lighter rig at 19,900 lbs versus 28,600 lbs.

The Tiffin Allegro Bus 40IP sleeps 6 while the Tiffin Zephyr 45PZ accommodates 8. Slide-outs play a role in livability: the Tiffin Allegro Bus 40IP has 1 and the Tiffin Zephyr 45PZ has 1.

For boondocking enthusiasts, tank sizes matter. Fresh water capacity goes to the Tiffin Allegro Bus 40IP at 92 gallons versus 69 gallons. Solar-wise, you get 400W on the Tiffin Allegro Bus 40IP and 600W on the Tiffin Zephyr 45PZ. Battery banks are 250 Ah and 350 Ah.

At $424,000 MSRP for the Tiffin Allegro Bus 40IP and $344,000 for the Tiffin Zephyr 45PZ, the Tiffin Zephyr 45PZ saves you $80,000.

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.

Both options have earned their place in the market. Your trip style and budget should be the final tiebreakers.