Fleetwood Altitude 31W vs Winnebago Spirit 25B
2026 Class C comparison · side-by-side specs, verdict, and who each is best for.
Quick verdict
Both 2026 Class C motorhomes run the Ford E-450 chassis with 7.3L V8. The Fleetwood Altitude 31W is 32.5 ft long with a single slide, queen rear, theater seating, residential fridge, 4,000W generator with prep, 50-amp service, solar prep, 16-gal LP. Sleeps 4. MSRP $151,232.
The Winnebago Spirit 25B is 6.17 ft shorter at 26.33 ft. No slide, generator prep only, 30-amp service, queen bed, full bath, bunkhouse, 40-gal fresh, 26-gal grey, 21-gal black, 18-gal LP. Sleeps 6 with bunkhouse. MSRP $153,197, $1,965 premium. The Spirit 25B is the lower-trim Winnebago sibling to the Minnie Winnie 25B with identical floorplan.
For full-timing couples or empty-nesters who want the larger floor, slide, factory generator, and 50-amp service, the Altitude 31W gives more square footage and electrical capacity. For families needing sleeps-6 capacity in a shorter, more nimble body, the Spirit 25B's bunkhouse and easier driving win.
Side-by-side specs
| Fleetwood Altitude 31W | Winnebago Spirit 25B | |
|---|---|---|
| MSRP | $151,232 | $153,197 |
| Length | 32'6" | 26'4" |
| Dry weight | — | — |
| GVWR | 14,500 lbs | 14,500 lbs |
| Sleeps | 4 | 6 |
| Slides | 1 | 0 |
| Fresh tank | 50 gal | 40 gal |
| Grey tank | 36 gal | 26 gal |
| Black tank | 36 gal | 21 gal |
| LP | 16 gal | 18 gal |
| Solar | — | — |
| Inverter | — | — |
| Generator | 4000W | — |
| Bath | — | full |
| Bed | queen | queen |
| 4-season | No | No |
| Off-road | No | No |
| Outdoor kitchen | No | No |
| Washer/dryer | none | none |
| Residential fridge | Yes | No |
Where Fleetwood Altitude 31W wins
- 32.5 ft length is 6.17 ft longer
- Single slide adds usable lounge floor
- 4,000W factory generator with prep
- 50-amp service handles dual roof ACs
- $1,965 lower MSRP at $151,232
Where Winnebago Spirit 25B wins
- Sleeps 6 with bunkhouse layout
- 26.33 ft length is more campground-friendly
- 18 gal LP exceeds Altitude's 16 gal
- Shorter wheelbase improves driving
- Bunkhouse for kids' sleeping
Pick the Fleetwood Altitude 31W if…
Pick the Fleetwood Altitude 31W if you're a couple or couple-plus-one chasing the longest 2026 Class C floor on the Ford E-450 platform. The 32.5 ft body, single slide, residential fridge, theater seating, factory 4,000W generator, and 50-amp service add up to a full-time-capable coach at the lower price. Best fit: a couple full-timing, snowbirding, or doing 2+ week trips who values the bigger floor and electrical capacity over sleep count and prefers to bank the $1,965 savings.
Pick the Winnebago Spirit 25B if…
Pick the Winnebago Spirit 25B if you need to sleep 6 in a Class C that fits standard pull-through campsites. The 26.33 ft length, bunkhouse layout, and 18-gal LP capacity make it the family choice in this comparison, even with the smaller body and 30-amp service. Best fit: a family with kids who plans state and national park trips, needs the bunkhouse for sleeping, prefers the shorter wheelbase for easier parking, and is willing to pay the $1,965 premium for the family-focused layout.
Frequently asked
What's the chassis under both?
Both 2026 Class C motorhomes use the Ford E-450 with the 7.3L V8 engine. Altitude 31W rates 325 HP; Spirit 25B rates 350 HP. Both at 14,500 lb GVWR.
Which can sleep more people?
The Spirit 25B sleeps 6 with bunkhouse. The Altitude 31W sleeps 4 with queen rear-bed configuration.
Is the Altitude 31W's slide a meaningful upgrade?
Yes, the single slide expands the main lounge area when set up. The Spirit 25B has zero slides, so its main living area is fixed at the body width.