Fleetwood Frontier 37S vs Newmar Northern Star 3709
2027 Class A comparison · side-by-side specs, verdict, and who each is best for.
Quick verdict
These two 38 ft Class A diesels both run the Cummins B6.7 at 360 HP but route the power through different chassis. The 2027 Fleetwood Frontier 37S sits on Freightliner XCR Freedom Sport Bridge, 33,600 lb GVWR, 3 slides, 96/65/45 gal tanks, 8 kW generator, 2,000 W inverter, 100 W solar, with the 2027 line now expanding to four floorplans (33TL, 37S, 38RT, 39B). The 2026 Newmar Northern Star 3709 sits on Freightliner, 38,000 lb GVWR, 7,800 lb cargo, 3 slides, 105/65/45 gal tanks, 32 gal LP, 400 Ah battery, bath-and-a-half king sleeping 6, four-season.
The Newmar Northern Star 3709 still wins on GVWR (+4,400 lb), documented cargo (7,800 lb), fresh tank (+9 gal), LP (32 gal), and bath-and-a-half. The 2027 Frontier 37S responds with the model-year refresh, expanded floorplan family, 2,000 W inverter, and 100 W solar. MSRP is $414,458 vs $412,510, a $1,948 delta.
Directional verdict: choose the 2027 Frontier 37S for newer inventory and the inverter baseline; choose the Northern Star 3709 for working cargo and the second toilet.
Side-by-side specs
| Fleetwood Frontier 37S | Newmar Northern Star 3709 | |
|---|---|---|
| MSRP | $414,458 | $412,510 |
| Length | 38'4" | 37'10" |
| Dry weight | — | 30,200 lbs |
| GVWR | 33,600 lbs | 38,000 lbs |
| Sleeps | 4 | 6 |
| Slides | 3 | 3 |
| Fresh tank | 96 gal | 105 gal |
| Grey tank | 65 gal | 65 gal |
| Black tank | 45 gal | 45 gal |
| LP | — | 32 gal |
| Solar | 100W | — |
| Inverter | 2000W | — |
| Generator | 8000W | 8000W |
| Bath | — | one_and_half |
| Bed | king | king |
| 4-season | No | Yes |
| Off-road | No | No |
| Outdoor kitchen | No | No |
| Washer/dryer | yes | included |
| Residential fridge | Yes | Yes |
Where Fleetwood Frontier 37S wins
- 2027 model year freshness, four-floorplan family
- 2,000 W inverter standard
- 100 W roof solar from the factory
- Aqua-Hot heating with 50-amp service
Where Newmar Northern Star 3709 wins
- 38,000 lb GVWR vs 33,600 lb
- 7,800 lb documented cargo capacity
- 105 gal fresh, 32 gal LP
- Bath-and-a-half, four-season, sleeps 6
- $1,948 cheaper at $412,510 MSRP
Pick the Fleetwood Frontier 37S if…
Pick the 2027 Fleetwood Frontier 37S if you want the latest model year diesel pusher with the new four-floorplan family and the documented 2,000 W inverter and 100 W solar that the Northern Star doesn't publish. The Aqua-Hot heating, 50-amp service, and Cummins B6.7 at 360 HP deliver a couples coach for 2-4 people who travel 4 months a year. The $414,458 MSRP buys 2027 dealer freshness and the option to pick from 33TL, 37S, 38RT, or the new 39B floorplan.
Pick the Newmar Northern Star 3709 if…
Pick the 2026 Newmar Northern Star 3709 if your trips include 4-6 people, your gear list runs heavy, and you want bath-and-a-half plumbing standard. The 38,000 lb GVWR, 7,800 lb documented cargo, 105 gal fresh, 32 gal LP, and 400 Ah battery bank are full-timer numbers. The four-season construction handles colder destinations the Frontier isn't rated for, and at $412,510 MSRP it's $1,948 cheaper than the 2027 Frontier 37S.
Frequently asked
What's new for the 2027 Frontier?
The 2027 Frontier expands from three to four floorplans, adding the 39B. Cummins B6.7, Aqua-Hot, and 50-amp service stay standard.
How much more cargo does the Northern Star carry?
The Northern Star 3709 documents 7,800 lbs of cargo capacity. The Frontier 37S does not publish cargo capacity, but its 4,400 lb lower GVWR sets the practical limit lower.
Which has bath-and-a-half?
Only the Newmar Northern Star 3709 lists bath-and-a-half. The Frontier 37S spec sheet does not.