Jayco Octane 312
Sticker was $38,036 in 2018. Out of production since 2018, so the used market is the only way to buy one. Estimate assumes a 2018 unit.
dry weight 7,945 lb + fresh water (102 gal, full) 851 lb + propane + battery 200 lb + gear for 2 600 lb. Brochure dry weight omits water, propane, batteries and your gear; this estimate doesn't.
Judged the way the app judges: estimated loaded weight against each vehicle's rating less a 10% margin, per model year, because the 312's published weights held steady.
The 62it doesn't fit
- Chevrolet Colorado / GMC Canyon (2.7 Turbo HO, tow pkg) '23-26: over by ~2,666 lb loaded
- Chevrolet Colorado / GMC Canyon (2.8 Duramax) '15-22: over by ~2,666 lb loaded
- Chevrolet Suburban (5.3 V8, max tow) '21-26: over by ~2,126 lb loaded
- Chevrolet Tahoe (5.3 V8, max tow) '21-26: over by ~2,036 lb loaded
- Chevrolet Traverse (tow pkg) '18-26: over by ~5,096 lb loaded
- Chrysler Pacifica '17-26: over by ~6,356 lb loaded
- Dodge Durango (5.7 / 6.4 Hemi, tow pkg) '14-26: over by ~1,766 lb loaded
- Ford Bronco 4-dr (2.7 EcoBoost, tow pkg) '21-26: over by ~5,546 lb loaded
- Ford Expedition (3.5 EcoBoost, tow pkg) '25-26: over by ~956 lb loaded
- Ford Expedition (3.5 EcoBoost, tow pkg) '18-24: over by ~1,226 lb loaded
- Ford Explorer (3.0 EcoBoost, tow pkg) '20-26: over by ~4,556 lb loaded
- Ford F-150 Lightning (max trailer tow) '22-26: over by ~596 lb loaded
- Ford Maverick (2.0 EcoBoost, 4K tow pkg) '22-26: over by ~5,996 lb loaded
- Ford Ranger (2.3 EcoBoost, tow pkg) '19-23: over by ~2,846 lb loaded
- Ford Ranger (2.7 EcoBoost, tow pkg) '24-26: over by ~2,846 lb loaded
- Ford Transit (HD tow pkg) '15-26: over by ~3,386 lb loaded
- GMC Acadia (tow pkg) '20-26: over by ~5,096 lb loaded
- GMC Hummer EV Pickup '22-26: over by ~2,846 lb loaded
- GMC Yukon / Yukon XL (5.3 V8, max tow) '21-26: over by ~2,036 lb loaded
- Honda Odyssey '18-26: over by ~6,446 lb loaded
- Honda Passport (AWD) '19-26: over by ~5,096 lb loaded
- Honda Pilot (AWD, tow pkg) '16-26: over by ~5,096 lb loaded
- Honda Ridgeline (AWD) '17-26: over by ~5,096 lb loaded
- Hyundai Palisade (tow pkg) '20-26: over by ~5,096 lb loaded
- Hyundai Santa Cruz (2.5T AWD) '22-26: over by ~5,096 lb loaded
- Jeep Gladiator (3.6 V6, max tow) '20-26: over by ~2,666 lb loaded
- Jeep Grand Cherokee (5.7 Hemi) '11-21: over by ~3,116 lb loaded
- Jeep Grand Cherokee (WL, tow pkg) '22-26: over by ~4,016 lb loaded
- Jeep Grand Cherokee L (5.7 Hemi) '21-26: over by ~3,116 lb loaded
- Jeep Grand Wagoneer (Hurricane, max tow) '22-26: over by ~731 lb loaded
- Jeep Wagoneer (Hurricane, max tow) '22-26: over by ~596 lb loaded
- Jeep Wrangler Unlimited 4-dr (tow pkg) '18-26: over by ~6,446 lb loaded
- Kia Telluride (tow pkg) '20-26: over by ~4,646 lb loaded
- Land Rover Defender '20-26: over by ~2,216 lb loaded
- Land Rover Discovery '17-26: over by ~2,216 lb loaded
- Lexus GX 550 (tow pkg) '24-26: over by ~1,411 lb loaded
- Lexus LX 600 '22-26: over by ~2,396 lb loaded
- Mazda CX-90 (3.3 turbo, tow pkg) '24-26: over by ~5,096 lb loaded
- Mercedes-Benz Sprinter '19-26: over by ~2,846 lb loaded
- Nissan Armada (3.5 twin-turbo, tow pkg) '25-26: over by ~1,946 lb loaded
- Nissan Armada (tow pkg) '17-24: over by ~1,946 lb loaded
- Nissan Frontier (3.8 V6, tow pkg) '22-26: over by ~3,161 lb loaded
- Nissan Pathfinder (tow pkg) '22-26: over by ~4,196 lb loaded
- Nissan Titan (5.6 V8, tow pkg) '17-24: over by ~811 lb loaded
- Ram 1500 (5.7 Hemi, max tow) '11-18: over by ~36 lb loaded
- Ram ProMaster '14-26: over by ~3,376 lb loaded
- Rivian R1S '22-26: over by ~2,666 lb loaded
- Subaru Ascent '19-26: over by ~5,096 lb loaded
- Subaru Outback (XT / Wilderness) '20-26: over by ~6,446 lb loaded
- Tesla Model X (tow pkg) '16-26: over by ~5,096 lb loaded
- Tesla Model Y (tow pkg) '21-26: over by ~6,446 lb loaded
- Toyota 4Runner (4.0 V6) '11-24: over by ~5,096 lb loaded
- Toyota 4Runner (i-Force Max) '25-26: over by ~4,196 lb loaded
- Toyota Grand Highlander (i-Force Max) '24-26: over by ~5,096 lb loaded
- Toyota Highlander (tow pkg) '20-26: over by ~5,096 lb loaded
- Toyota Land Cruiser (i-Force Max) '24-26: over by ~4,196 lb loaded
- Toyota Sequoia (i-Force Max, tow pkg) '23-26: over by ~1,026 lb loaded
- Toyota Sienna '21-26: over by ~6,446 lb loaded
- Toyota Tacoma (i-Force Max, tow pkg) '24-26: over by ~3,746 lb loaded
- Toyota Tacoma (V6, tow pkg) '16-23: over by ~3,476 lb loaded
- Toyota Tundra (5.7 V8, tow pkg) '11-21: over by ~416 lb loaded
- Volkswagen Atlas (tow pkg) '18-26: over by ~5,096 lb loaded
These verdicts assume 2 people aboard with typical gear. See the margin for your truck and your crew →
A missing row means the maker never published that figure: unknown, not zero.
- 1× Front bedroom bed(Permanent)—
- 1× Power-lift bed above the garage(Stow-away)—
- 2× Garage convertible sofas(Convertible)—
- 1× Dinette converts(Convertible)—
Jayco (Mixed tier): Octane
- 2017Introduced
- 2018Final model year; UVW 7,840 lb
Findable: a few listed nationwide most weeks. Why: Jayco is a volume manufacturer; only 2 model years. Estimated from build volume and production span, not a count of live listings.
The longest Super Lite of the 2017-2018 run, at nearly 38 ft with a full 102-gal fresh capacity.
Live listings for the 312 on the big marketplaces. Each search opens pre-filled with this exact floorplan:
Inventory varies by site and day. Slim pickings? search the whole Octane line ↗
These are the facts. Whether it beats the other six thousand rigs for you depends on what you care about. Set your priorities as sliders, switch on your hard limits, and watch the whole market re-rank around them. Every exclusion explained, every margin shown.
See where it ranks for you →Data compiled from manufacturer spec sheets, retrieved 2026-07.