PALO ALTO, Calif. — L’attesa è finite! The wait it over! The much-anticipated Oasi 540.1 Class B motorhome from Italian RV manufacturer Wingamm is now available for U.S. customers, with the most recent batch of 10 produced on spec expected to clear customs shortly (most have been sold). The next batch of made-to-order 17-foot, 10-inch Oasi 540.1s will be available in November this year (the summer batch is sold out).
Family-owned and -operated Wingamm was established in 1977 and the company takes credit for being “the first camper manufacturer in the world to create a living cell made with fiberglass monocoque.”
Wingamm’s original U.S. rollout for the Oasi 540 was supposed to happen in 2022 but a series of unfortunate events, including supply shortages from the COVID-19 pandemic, halted the company’s plans. The newest iteration is the 540.1. So, without further adieu, Wingamm Italy brings the United States its luxurious, distinct-looking and innovative mini motorhome.
RVBusiness was given access to the Oasi 540.1 during a recent West Coast Roadshow, which included stops in San Diego, Malibu and Palo Alto, Calif., as well as Scottsdale Ariz., and Redmond, Ore.

More to Come
Also headed to the United States soon are the 20-foot Oasi 610 M (drop-down bed, plus rear bed) and Oasi 610 GL (drop-down bed, plus rear bed and a garage that can fit a Vespa, or a drop-down bed and bunk-bed configuration). The 22-foot Oasi 690 Twins and Oasi 690 GC will also be available in the U.S. One Oasi 690 and one Oasi 610 will be arriving in Q3 and Q4 respectively for customers to see and test drive. Once these units arrive in the U.S., Wingamm plans to start taking orders, and delivery is expected in early 2026.
“You won’t find a Wingamm on a regular RV dealership lot,” said Tony Diamond, exclusive North American distributor for Wingamm. “It’s the Ferrari of Class B’s. It’s a beautiful, one-of-a kind, stylish motorhome. I describe it as a studio apartment because when you enter a Wingamm, you enter through a formal door, unlike a regular Class B with the utilitarian sliding door. And when you’re inside you have a kitchen that’s the size of one in a studio apartment. And then our dining room seats five.”
Wingamm USA acts as a “customer service concierge for the American dealerships, providing direct support and ensuring customer satisfaction throughout the ownership period,” explained Diamond. Wingamm USA developed a franchise dealership model where product specialists immerse customers in the Wingamm experience. Current locations are in Salt Lake City, Utah, and Nashville, Tennessee, and there are 10 authorized service centers.

First Impression
After elbowing my way through an enthusiastic throng of people, I got a chance to check out an Oasi 540 in person. First off, it’s nothing like a Class B you’ve seen in the U.S. Built on the Ram ProMaster chassis equipped with the 3.6-liter Pentastar V-6, the motorhome’s sleek fiberglass monocoque body is built in-house as one seamless piece. Not only does that make the 540.1 wider on the inside than a typical Class B—adding about 14 inches width—but the external and internal fiberglass layers wrap an insulating layer of 1-inch-thick polyurethane, creating a thermal barrier. Since fiberglass is known for its excellent insulating properties and doesn’t conduct heat, the 540.1’s internal temperature will stay more consistent, according to Diamond. An added benefit is that there’s less power consumption for heating and cooling, and sound-dampening for a quieter space.
The minute I stepped up inside the doorway via the electric step—with two people on my heels—the larger-than-expected interior was a surprise. Magnifico! The bright furnishings and cabinets are accentuated by large windows that open outward on each side of the motorhome, and a spacious walk path leads to the cab area. An L-shaped dinette on the Wingamm’s driver’s side faces the kitchen with its—get this!—almost 6½-foot-long countertop! Granted, a generously sized single-basin sink and two-burner cooktop are housed in the counter space closest to the entry door, but that much countertop space is unheard of in an under-18-foot motorhome. Additionally, the sliding and swiveling 4-foot-long (20-inch-wide) table can be rotated for use as an extension of the kitchen counter, creating a huge L-shaped workspace. This configuration also serves as a table for folks sitting in the cab’s swiveling captain’s chairs.
There’s plenty of storage with upper and lower cabinets that have chrome push-lock handles so they stay closed during travel. A 3-cubic-foot 12-volt DC fridge is incorporated into the cabinetry below the cooktop. A trash bin is attached to the interior of the entry door, which could be used for other purposes, such as stowing muddy shoes. The door has a screen, and there’s a privacy shade in the door’s window.
Living, Lounging & Sleeping
The comfy L-shaped sofa can easily seat four average-sized adults with elbow room for each. And a nice touch is that the sofa’s throw pillows have zippered covers, meaning that the covers can be washed; no need to replace the pillows after they get grungy from use. The portion of the sofa that faces forward has 33-inch-high back cushions and incorporates two seat belts.
When it’s time to catch some z’s, the telescoping table can be lowered by simply pushing down on it and placing the included mattress on top of the table to convert the dinette into a full-sized bed. But wait, there’s more: A 53-by-77-inch drop-down bed with a 4-inch-thick memory-foam mattress is recessed in the ceiling and positioned over the dinette. Simply pull down or push up to use the bed or to stash it away. A provided ladder makes the 46-inch climb into the bed easy, or the sofa can be used as a step.

As a side note, when the upper bed is lowered for use, that leaves about 46 inches of height to move between the front and back of the motorhome, if for some reason you need to make the trip to the cab when the bed is down. This also allows 27 inches between the lower and upper beds so the kiddos below can sit up in bed.
The upper bed feels sturdy and is bookended by cabinets for easy access should you need to reach for an extra blanket or a snack. There’s open space above the cabinets to tuck away items like a book or water bottle that you may want to stow for the night. Each side of the bed has a reading light with an incorporated USB charging outlet, plus a control panel for operating the interior lights.
A 22-by-24-inch skylight with a privacy shade/bug screen are positioned over where you would generally lie your head, so you can fall asleep looking at the stars. Because of the roof’s slope, there’s about 17 inches of headroom at the lowest point under the skylight, which should be plenty for most sleepers, but if not, you can always spin around and sleep with your head at the other end. Another skylight amidships opens as well and has the privacy shade/bug screen. The 540.1 certainly provides ample opportunity for fresh airflow, natural light and views of the outdoors!
A large wardrobe takes up residence between the entry door and wet bath. Interior height is 6 feet, 2 inches under the drop-down bed, with extra headroom near the entry door.

Il Bagno, aka the Bathroom
The 540.1’s rear wet bath stands out as well…it doesn’t just feel larger because of the big window (not openable because of U.S. regulations), it is larger than any Class B’s powder room I’ve seen, and the design elements give it an extravagant feel. This waterproof space offers more than 6 feet of headroom, a mirrored double-door medicine cabinet (with inside railings to keep stuff from falling out when you open the doors), plus a cabinet below the above-counter sink, a vent fan, an incorporated cupholder, a hand-towel rack, towel hooks, a shower with adjustable bar and a 4.7-gallon cassette toilet.
The space is wide enough so that when showering, you can actually lift your arms to wash your hair and not bump your elbows into the side walls (unless you’re really tall). The toilet is placed at an angle to face the door so that most people will have lots of legroom when sitting on the commode. There’s even a toilet brush!

Staying Comfortable
The Wingamm’s 12-volt air conditioner runs off the battery, and a Truma Combi furnace and water heater are standard. Radiant heat warms the 2-inch-thick floor. One of the 540.1’s exterior storage bays holds two 5-gallon propane cylinders. For those who want to do away with propane, the Truma Combi G gasoline heater that pulls gas from the Ram’s engine is optional, and the two-burner cooktop is replaced with an induction cooktop.
Standard are 300Ah of lithium battery storage, a 2,000-watt Victron MultiPlus inverter powering three AC outlets and a 130-watt solar panel. To increase off-grid capacity, an optional upgraded power package includes an additional 300Ah of lithium power storage, a 3,000-watt inverter and a secondary alternator (Balmar 170-amp). Shorepower is 30-amp.
The insulated freshwater tank holds 26 gallons and gray-water capacity is 18 gallons. A Firefly touchscreen panel over the entry door controls and monitors all of the Oasi’s systems and functions.

Take It Outside
The 540.1’s exterior storage takes the prize, with storage on the driver’s side, and as mentioned previously, the compartment on the passenger’s side that accommodates the propane cylinders. At the rear of the motorhome is a 5½-foot-long storage bay with a portion of it that’s deep enough to slide in a full-size spare tire, specifically an LT225/75R16 that keeps the 540.1 rolling along.
The Oasi has a central locking system and the exterior storage doors are unlocked via the vehicle’s key fob. A manual armless awning extends 6 feet, offering shade over the entry door and kitchen window.
On the Road
While our test drive was kept short because of the many people who wanted to experience the 540.1, what stood out was how quiet it was on the road. We cruised along California’s Pacific Coast Highway at about 50 mph with road noise barely perceptible. It was so quiet inside that we could carry on muted conversations between those seated in the cab and those at the dinette. There wasn’t a single squeak or rattle from the cabinets, and according to Diamond, the custom cabinets are glued in as well as attached via screws.

At under 18 feet, the 540.1 fits into a regular parking spot and the large display for the backup camera provides an excellent rear view. Driving the Oasi was like driving an SUV with a short front-end, rather than a 10-foot-tall motorhome.
Maneuverability is impressive and the turning radius is incredible. U-turns in tight spaces are no problem for the 540.1; turning radius is 37.4 feet. The Ram ProMaster has a nine-speed automatic transmission and features adaptive cruise control, lane-keep assist and other features. Four exterior wrap choices are available: Standard (white), Black Edition, Fashion (white with green Wingamm logo pattern) and Absolute (white with black and yellow accents). Interior choices are Cala Luna (standard, available in cotton fabric or eco-leather ivory), and the Capsule Collection, which are the upgraded Costiera, Dolomiti and Metropoli interiors that include Rubelli textiles.
All this luxury does come at a price: base MSRP is $188,500.
Boasting a compact footprint, the Oasi 540.1 is big on interior space and amenities. We’re impressed that an RV that’s about the length of a minivan can provide spacious seating, sleeping and living for a family of four on the move. Wingamm has crammed a lot of creature comforts into a mini home away from home, without the people inside feeling crammed. Arrivederci!
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