Fleetwood Altitude 27U 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 ride the Ford E450 chassis with 14,500 lb GVWR ratings, but they target different buyer profiles. The Fleetwood Altitude 27U measures 29.5 ft, 102 in wide with the 7.3L V8 (325 HP), single slide, queen bed, onboard 4,000-watt generator, 50-amp shore service, 50/36/36 gal tanks, 16 gal LP, outdoor kitchen, residential fridge, fireplace, U-shape dinette, and automatic leveling. Sleeps 4. MSRP $151,232.
The Winnebago Spirit 25B runs 26.33 ft with the 350 HP V8, no slides, queen bed plus bunkhouse cabover, 40/26/21 gal tanks, 18 gal LP, full bath, generator prep, solar prep, 30-amp service, and sleeps 6. MSRP $153,197, just $1,965 above the Altitude.
Directionally, the Fleetwood Altitude 27U is the slide-out residential-style Class C with included generator, fireplace, and outdoor kitchen, while the Winnebago Spirit 25B is the shorter family Class C with cabover bunkhouse sleeping 6 and the more powerful engine.
Side-by-side specs
| Fleetwood Altitude 27U | Winnebago Spirit 25B | |
|---|---|---|
| MSRP | $151,232 | $153,197 |
| Length | 29'6" | 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 | Yes | No |
| Washer/dryer | none | none |
| Residential fridge | Yes | No |
Where Fleetwood Altitude 27U wins
- Single slide opens roughly 12 sq ft of additional floor space
- Onboard 4,000-watt generator installed from factory
- 50-amp shore service vs 30-amp doubles available campground power
- Outdoor kitchen, residential refrigerator, and fireplace standard
- Automatic leveling system included for setup ease
Where Winnebago Spirit 25B wins
- Sleeps 6 vs 4 with the cabover bunkhouse layout
- 350 HP version of the 7.3L V8 vs 325 HP
- 26.33 ft length is 3.2 ft shorter for tighter parking
- Solar prep included for owner-spec panel install
- Full bath layout documented in spec sheet
Pick the Fleetwood Altitude 27U if…
Pick the Fleetwood Altitude 27U if you camp as a couple or small family and want the slide-out interior, onboard 4,000-watt generator, 50-amp service, outdoor kitchen, fireplace, and automatic leveling all standard. The 102 in width adds shoulder room when parked, the 50/36/36 gal tanks support extended dry-camping, and the residential refrigerator handles full grocery loads. Trade-off: 10 HP less than the Spirit 25B's 335 HP engine, and the 29.5 ft length is longer.
Pick the Winnebago Spirit 25B if…
Pick the Winnebago Spirit 25B if you have a family of 5-6 and need the cabover bunkhouse layout, want the 350 HP V8 for better mountain pulling, and value the shorter 26.33 ft footprint. The 30-amp service caps shore power, the 40/26/21 gal tanks are smaller, and you'll add generator and solar aftermarket via the prep packages. The $1,965 premium pays for the bunkhouse and the bigger engine.
Frequently asked
Slide and sleep differences?
The Altitude 27U has a slide and sleeps 4. The Spirit 25B has no slides and sleeps 6 with bunkhouse, queen, and dinette conversion.
Engine comparison?
Both use the Ford 7.3L V8. The Altitude 27U is rated at 325 HP per Fleetwood; the Spirit 25B's same engine is at 350 HP per Winnebago.
Which is the better deal at $153,197?
If you need 6-sleep family capacity and want the more powerful engine, the Spirit 25B at $1,965 more is the better fit. If you camp as a couple and value the slide, generator, fireplace, and outdoor kitchen, the Altitude 27U is the better value.