2025 Seneca

Starting at $355,193

Be at home wherever you are in the Jayco Seneca. This powerful Diesel Super C has a Freightliner® S2RV Plus chassis, with a Cummins® ISB 6.7L 360HP diesel engine and a 100-gallon fuel tank, which is great for those who want a diesel engine and high tow capacity. With the 100-gallon fuel tank, you'll make fewer stops on long trips, and get to your destination quicker than ever. Our repeat customers rely on the JRide® Premium handling package which features a computer-balanced driveshaft, rear air suspension, a heavy-duty rear stabilizer bar, and SACHS shocks, creating a quiet, comfortable ride that you won't want to end! Of course, we can't forget the full air brakes that provide increased braking power, even on grades, and improve stopping distance. This ensures you enjoy the ride through improved stability and better absorption of road vibrations. In the Seneca, you'll enjoy the journey just as much as the destination. Once you reach your destination, unloading your camping gear to set up camp is a breeze thanks to the carpeted full pass-through basement storage compartments. An optional 12V cooler on a slide-out tray provides easy access to a refreshing drink once setup is complete.

Inside the Seneca Super C, you can take in the view from the Lippert 4000 Series windows with integrated cassette day/night shades, which look just as great from the outside as they do from the inside. Once the sun sets, get to the overhead bunk to enjoy some stargazing through the automotive bonded panoramic window in the front cap. When it comes to the less fun parts of camping, like dealing with the black tank, the Seneca’s Thetford® Sani-Con® Turbo macerator system offers a clean and sanitary way to empty tanks. The built-in macerator ensures no clogs, the power pump ensures you can empty tanks going uphill, and a retractable hose means you don’t have to hook and unhook each time you empty your tanks. The Seneca Super Class C is the epitomy of Class-y.


Seneca Floorplans and Prices

The workhorse of our Super C Diesel lineup, the Seneca, offers a comfortable, roomy ride with unbridled power. Equipped with a 12,000 pound hitch with a 7-pin plug, the Seneca is ready to tow everything you need to bring along. The Seneca offers three 40-foot floorplans to accommodate all your needs, including a bunk floorplan for those who require a little additional sleeping space. Get going and get towing in the Seneca Super C Diesel.

Starting at $355,193
Sleeps up to 9
Length 39' 4" - 39' 4"

Standard Features and Options

Standard Driving Equipment

  • Freightliner® S2RV Plus chassis
  • GVWR- 31,000 lb.
  • GCWR- 43,000 lb.
  • Cummins® ISB 6.7L 360 HP diesel engine with 800 ft.-lb. torque
  • Allison® 3000 MH automatic transmission
  • 185-amp alternator
  • G-rated highway tires- 275/80R22.5
  • Alcoa® aluminum wheels
  • Engine exhaust brake
  • 12,000 lb. rear hitch receiver
  • 7-pin plug
  • Dual 12V chassis batteries
  • 100 gal. fuel tank
  • 10 gal. DEF tank
  • 6-way power driver and passenger seats
  • Deluxe heated, remote-controlled, side-view mirrors
  • Tilt steering wheel
  • Cruise control
  • Detroit automatic wipers/headlights
  • Power windows and door locks
  • Auxiliary start switch

Standard Exterior Equipment

  • StrongholdVBL™ roof, floor and sidewalls
  • Bead-foam insulation (R-24 max roof, R-9 max floor and R-8 max walls)
  • One-piece, seamless, crowned fiberglass roof
  • Premium Sikkens full-body paint
  • Automatic hydraulic leveling jacks
  • Entrance door with industry’s largest travel-view window
  • Electric-powered entrance step
  • Slideout awning(s)
  • Exterior entertainment center with outside speakers and LED HD Smart TV mounted on swivel bracket
  • Winegard® In-motion satellite dish
  • Carpeted, full pass-through storage compartments with Keyed Alike lockable slam-latch doors
  • Thetford® Sani-Con Turbo macerator system
  • Third brake light
  • Cable TV hookup with RG-6 coax and video selector switch
  • Winegard 2.0 Wi-fi/4G antenna
  • Onan® 8,000W Quiet Diesel generator and auto-gen start
  • 200W solar panel with dual controller
  • (4) 6V AGM (220Ah) house batteries on slideout tray
  • Transfer switch with reverse polarity protection
  • 24.5 gal. propane tank (83 lb.)
  • LP quick-connect hookup
  • Exterior utility center
  • Winterization drain system
  • Black tank flush
  • Outside shower
  • 12V demand water pump
  • Water filtration system

Standard Interior Equipment

  • Custom-molded ABS surround in cab-over area
  • Overhead bunk with 750 lb. capacity
  • Firefly total coach control system with wall-mounted touchscreen and mobile app
  • 84 in. interior ceiling height with padded vinyl ceiling
  • High-intensity, recessed LED ceiling lights
  • LED-lit fascia
  • Vinyl plank flooring
  • Hardwood cabinet doors and drawer fronts
  • Deluxe hidden cabinet hinges
  • Ball-bearing drawer guides
  • 30,000 BTU auto-ignition furnace
  • 10 gal. gas/electric water heater
  • Electric fireplace
  • Jayco-exclusive, easy-operation legless dinette table
  • 2-point lap safety belts in all designated seating locations
  • Car seat tethers (select floorplans)
  • Integrated day/night cassette shades
  • LED HD Smart TV in living area
  • JBL® audio system
  • Wood-framed kitchen window with spice cabinets
  • 2-burner induction cooktop
  • LED-lit, solid-surface kitchen countertops with recessed stainless steel sink and sink covers
  • Shower with decorative surround, glass door, skylight and light
  • Porcelain toilet with foot flush
  • Recessed stainless-steel bathroom sink
  • Powered roof vent in bathroom with wall switch
  • Walk-around, king-size bed with power head lift, bedspread and nightstands
  • USB port and wireless charging in nightstands
  • Under-bed storage
  • LED HD Smart TV in bedroom
  • Large wardrobes
  • Bunks with industry-exclusive 300 lb. capacity each (37L)
  • Wall-mounted tablet holder in each bunk (37L)
  • Smoke alarm
  • Carbon monoxide detector
  • Fire extinguisher

Customer Value Package (Mandatory)

  • JRide® Premium: Computer-balanced driveshaft, rear air suspension, heavy-duty rear stabilizer bar, full air brakes, SACHS shocks
  • One-piece, seamless, fiberglass front and rear caps
  • Automotive-bonded, panoramic window in front cap with power shade
  • Lippert™ 4000 series dual-pane frameless bonded windows
  • (2) 15,000 BTU A/C units with heat pump on main A/C
  • Electric patio awning with LED lights
  • 2,000W pure sine wave inverter
  • Power cord reel with 50-amp service
  • Sony® infotainment center with tilt/swivel, Apple® CarPlay and Android Auto™
  • Backup and side-view cameras
  • Residential refrigerator
  • Convection microwave oven


  • Power theater seating (37L) (STD on 37M)
  • Hide-a-bed sofa ILO theater seating (37M)
  • Freestanding table with 4 chairs (37K, 37M)
  • 15 cu. ft. 12V refrigerator
  • Combination washer/dryer (37L, 37M)
  • Stackable washer/dryer (37K)
  • Starlink satellite internet system with KING Jack™ antenna IPO Winegard Connect 2.0
  • Canadian Shaw® TRAV’LER® satellite dish
  • Winegard® TRAV’LER® satellite dish - DIRECTV®
  • Slide-out tray with 12V refrigerator cooler in basement

Standard Features
and Options

Stronghold VBL™ Lamination
Solar Power
One-Piece Seamless Front Cap
Incredible Bunk Ratings
Seatbelts in All Designated Seating Locations


We engineer each motorhome with several specific enhancements for a powerful blend of precise handling and renowned stability on the road. Because the journey should be as exciting as the destination.

Learn more »

Stronghold VBL™ Lamination

Every sidewall, rear wall and slide room wall is bonded together for a minimum of 16 minutes under 144 tons of pressure to create the lightest, yet strongest, construction available in the RV industry. 

Learn more »

Solar Power

Jayco is one of the first companies to offer solar prep, or solar panels, on every single motorhome.  With sidewall or roof-mounted prep kits, you have the option to easily install solar panels, or additional panels if already solar equipped, for extra power at your camp.

Learn more »

One-Piece Seamless Front Cap

An RVs front cap bears a lot of the brunt of the road. The one-piece, seamless front cap resists wear and tear like fading or moisture damage over the years.

Learn more »

Incredible Bunk Ratings

Go ahead and bring another traveler or some extra gear. With an overhead bunk capacity of 750 lbs., Jayco beats the industry standard by 300lbs. On top of that, Jayco offers a 300 lb. capacity in each standard bunk.

Learn more »

Seatbelts in All Designated Seating Locations

To help you keep you most precious cargo safe as you roll on down the road, we install seatbelts in every designated seating location.

Learn more »

Seneca Videos

Superior Construction Elements

(Click on number for more information)


Enjoy a quiet and comfortable drive thanks to this powerful blend of ride and handling features. JRide® Premium upgrades on the Seneca include:

 - Computer-balanced driveshaft

 - Rear air suspension

 - Heavy-duty rear stabilizer bar

 - Full air brakes

 - SACHS shocks

Jayco RV's StrongholdVBL® vacuum-bond process applies 144 tons of pressure to wall components (fiberglass exterior siding, welded aluminum framing, block foam insulation, metal backers and interior wall panels) for 16 to 18 minutes for an incredibly strong and durable product. All sidewalls, floors and roofs are built by Jayco RV in a temperature and humidity-controlled facility.

The Seneca's one-piece, seamless front cap resists wear and tear like fading or moisture damage over the years. An automotive-bonded panoramic window with a power shade in the front cap lets in plenty of natural light.

A crowned one-piece fiberglass roof provides unmatched durability.

The overhead bunk in the Seneca boasts a weight capacity of 750 lbs. This is 300 lbs. more than the industry standard and allows owners to sleep two full-sized adults or store extra gear while traveling.

Not only is solar power environmentally friendly, but it also reduces the cost and load of electrical use in your motorhome. A standard 200W solar panel with a dual controller will monitor and charge your house and chassis' batteries simultaneously.

Easily access all of your gear with the Seneca's carpeted, full pass-through storage compartments with lockable Slam-latch™ doors

Seneca's dual-pane, tinted safety-glass frameless windows make exterior maintenance easier than ever and give the motorhome a sleek, modern look.

Your Saved Floorplans

Click the star on a floorplan page to save and compare.