Fleetwood Frontier 37S vs Newmar Northern Star 3418
2026 Class A comparison · side-by-side specs, verdict, and who each is best for.
Quick verdict
These two Class A diesels both run the Cummins B6.7 360 HP, 50-amp service, and price within $3,652 of each other - but they make opposite floorplan trade-offs. The Fleetwood Frontier 37S is 38.33 feet with three slides, 33,600 lb GVWR, king bed, 2,000-watt inverter, 96-gallon fresh tank, and 8,000-watt generator for $414,458. The Newmar Northern Star 3418 is shorter at 34.83 feet but adds a fourth slide, hits 36,500 lb GVWR with 7,700 lb cargo, sleeps 6 with the queen bed, runs 400 amp-hour battery and four-season insulation for $410,806.
The extra slide on the Northern Star creates more interior square footage in a shorter overall package - 34.83 ft with 4 slides vs 38.33 ft with 3 slides. The Newmar also adds 2,900 lb more GVWR, four-season insulation, and a 9-gallon larger fresh tank (105 vs 96). The Frontier 37S counters with the king bed (vs Northern Star's queen), the bigger 2,000-watt inverter, generator prep, and factory 100W solar.
Verdict: Northern Star 3418 for the four-slide compact-but-roomy layout, four-season build, and queen-bed sleeping for 6. Frontier 37S for the king bed and the slightly longer 38.33-foot footprint.
Side-by-side specs
| Fleetwood Frontier 37S | Newmar Northern Star 3418 | |
|---|---|---|
| MSRP | $414,458 | $410,806 |
| Length | 38'4" | 34'10" |
| Dry weight | — | 28,800 lbs |
| GVWR | 33,600 lbs | 36,500 lbs |
| Sleeps | 4 | 6 |
| Slides | 3 | 4 |
| 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 | — | full |
| Bed | king | queen |
| 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
- King bed (Northern Star uses queen)
- 2,000-watt inverter with generator prep
- 100W factory solar (Northern Star solar prep only)
- Six 6V deep cycle batteries
- $3,652 lower MSRP at $414,458
Where Newmar Northern Star 3418 wins
- Four slides vs three (one more)
- 36,500 lb GVWR vs 33,600 lb (+2,900 lb)
- 7,700 lb published cargo capacity
- Four-season insulation, sleeps 6 vs 4
- 105-gal fresh vs 96-gal (9 more gallons)
Pick the Fleetwood Frontier 37S if…
Pick the 2026 Fleetwood Frontier 37S if you want a 38-foot Class A diesel with the king bed and Fleetwood's value-tier Frontier finish - Cummins B6.7 360 HP, Freightliner XCR Freedom Sport Bridge chassis, three slides, 100W factory solar, 2,000-watt inverter, and 8,000-watt generator for $414,458. Best for couples or two travelers who prioritize sleeping comfort (king > queen) and the slightly larger 38.33-foot footprint over the four-slide compact layout the Northern Star offers.
Pick the Newmar Northern Star 3418 if…
Pick the 2026 Newmar Northern Star 3418 if you want maximum interior space in a shorter footprint - the four slides expand the 34.83-foot coach beyond what the longer Frontier 37S achieves with three slides. The 36,500 lb GVWR carries 7,700 lb cargo, sleeps 6 with the queen bed, four-season insulation handles winter, and the 105-gallon fresh tank beats the Frontier's 96. At $410,806 it saves $3,652 versus the Fleetwood. Best for buyers who want quad-slide roominess, four-season camping, and slightly easier 34.83-foot handling.
Frequently asked
Which has more slides?
The Newmar Northern Star 3418 has four slides; the Fleetwood Frontier 37S has three - one extra slide on the Newmar despite its shorter 34.83 ft length.
How do bed configurations compare?
The Frontier 37S has a king bed; the Northern Star 3418 has a queen bed - king sleeping advantage to the Fleetwood.
Which is four-season rated?
The Northern Star 3418 is four-season rated. The Frontier 37S is not - a meaningful difference for winter travelers.