Class A motorhomes are available in a wide variety of lengths, ranging from as little as 25 feet to more than 45 feet.
In order to accommodate the various needs and wants of RVers.
However, if you’ve been looking at larger Class A RVs lately, you might be wondering what the longest Class A motorhome is.
The longest Class A motorhome is the Entegra Cornerstone 45B, which has an overall length of 45 feet 5 inches and a gross vehicle weight rating of 54,000 pounds.
If you want to know more about the longest Class A motorhome though, make sure to keep reading.
As we provide a full breakdown of the longest Class A RV below, plus information on four other runner-ups that also have lengths of 45 feet.
Which is pretty much where Class A motorhomes max out, give or take a few inches.
The Longest Class A Motorhome: Entegra Cornerstone 45B
Quick Specs
- Price: $600,000
- Length: 45 Feet 5 Inches
- Gross Vehicle Weight Rating: 54,000 Pounds
- Slide-Outs: 4
- Bathrooms: 1 Full Bath + 1 Half Bath
- Sleeping Capacity: 4
Ironically the longest Class A motorhome also happens to be one of the cheapest longer Class A motorhomes you can buy.
As the Entegra Cornerstone 45B, not only has the longest length but also one of the cheapest prices, for larger Class A RVs, with an average price of $600,000.
And while $600,000 might not seem that cheap or affordable to most, when stacked up against the price of other large Class A RVs, the price is a downright bargain.
As many of the longest Class A motorhomes typically have prices close to and even well over 1 million dollars.
Making the Entegra Cornerstone 45B not only the longest Class A RV but also one of the most affordable larger Class A RVs on the market.
Entegra Cornerstone 45B Floorplan
However, despite the more affordable price of the Cornerstone 45B, this large Class A motorhome still offers many of the same features that ultra-high-end luxury coaches offer.
Including such premium features as quad slide-outs, two separate bathrooms, full-body paint and graphics, three ducted 15,000 BTU AC units with heat pumps, and hydraulic automatic coach leveling.
As well as pretty much every power feature you can think of, including dual power awnings, power engine bay door, and power basement storage slide-out trays.
In addition, the Entegra Cornerstone 45B also offers plenty of power as well as towing capacity (20,000-pounds), thanks to its rear Cummins® 15-liter X15 turbocharged 605 HP engine and its Allison® 4,000 MH 6-speed transmission.
To see how much a typical Class A motorhome can tow, check out our article “How Much Can a Class A Motorhome Tow? (15 Examples)“.
And if you’re looking for other floorplan options Entegra has you covered.
As the Entegra Cornerstone is available in six different floorplans, including the 45B (featured), the 45D, the 45F, the 45R, the 45W, and the 45Z
For even more information on the Entegra Cornerstone 45B and to see the other floorplan options, make sure to check out Entegra’s website by clicking here.
Longest Class A Motorhome Runner-Up: Tiffin Allegro Bus 45 OPP
Quick Specs
- Price: $575,000
- Length: 45 Feet
- Gross Vehicle Weight Rating: 51,000 Pounds
- Slide-Outs: 4
- Bathroom: 1 Full Bath
- Sleeping Capacity: 4
As mentioned above, all the runner-ups to the longest Class A motorhome actually have the same 45-foot length.
So we’ve chosen to organize them by their average price, from lowest to highest.
Starting with the Tiffin Allegro Bus 45 OPP, which is the flagship motorhome in the Tiffin lineup.
And is the least expensive longest Class A motorhome you can buy, with an average price of $575,000.
To see the cheapest Class A motorhomes on the market today, check out our article “The 10 Cheapest Class A RVs You Can Buy“.
Tiffin Allegro Bus 45 OPP Floorplan
Built on the Tiffin custom PowerGlide Chassis, this modern smooth-riding chassis has many of the same safety features found on most modern passenger vehicles, including advanced braking, collision mitigation system, as well as adaptive cruise control.
Helping to make driving this large Class A motorhome much more manageable as well as safe.
But the advanced features don’t stop there on this more affordable luxury Class A motorhome.
As the Allegro Bus 45 OPP is loaded with high-end and premium features throughout the coach.
Including such luxury features as a one-piece fiberglass roof, an air/hydraulic leveling system, a 10 kW quiet diesel generator, a high-performance cooling system with three ducted ACs, as well as advanced thermal insulation and many premium cold-weather features.
To see other Class A RVs with extensive insulation and cold-weather features, check out our article “Top 10 Class A RVs for Cold Weather (With Pricing)“.
And as is the case with all the longest Class A motorhomes on this list, the Tiffin Allegro Bus 45 OPP is a diesel pusher, which features a rear-engine design and a large diesel engine.
Which offers numerous advantages over motorhomes with a front gasoline engine.
Including more power and torque, a quieter ride, higher towing capacities, better fuel efficiency, reduced maintenance, and longer engine life.
Which is why diesel pusher motorhomes are so much more expensive and hold their value longer compared to front engine gas-powered motorhomes.
For more information on the Tiffin Allegro 45 OPP, be sure to check out Tiffin’s website by clicking here.
Longest Class A Motorhome Runner-Up: Foretravel Realm Presidential Series FS605 LVMS
Quick Specs
- Price: 1 Million
- Length: 45 Feet
- Gross Vehicle Weight Rating: 54,000 Pounds
- Slide-Outs: 4
- Bathrooms: 1 Full Bath + 1 Half Bath
- Sleeping Capacity: 5
While the Foretravel brand might not be as well known as some other luxury RV brands, such as Entegra, Tiffin, and Newmar.
That doesn’t mean that Foretravel Motorcoach doesn’t produce some of the best-in-class luxury RVs on the market.
As Foretravel has been producing some of the best and forward-thinking RVs since the 1970s.
In fact, Foretravel produced the first diesel-powered motorhome in 1974.
And was one of the first RV manufacturers to use fiberglass and hardwood in their construction as well as use a full air ride and air leveling suspension system.
Foretravel Realm Presidential Series FS605 LVMS Floorplan
And the Foretravel Realm Presidential Series FS605 is just the latest iteration of Foretravel’s commitment to luxury and premium RV design.
As it’s Foretravel’s flagship diesel pusher, offering the longest length and the most luxury and premium features.
Including such luxury features as premium multi-color exterior paint with 7 coats of clear coat that takes more than 750 hours to complete as well as unmatched finishes and interior design.
In addition, the Realm Presidential Series FS605 also offers the premium Spartan K4 chassis, a powerful Cummins diesel X15 engine, air suspension with VDC control, and a four-point hydraulic leveling system.
And if safety is your primary concern, Foretravel has you covered, as this luxury Class A RV has every safety feature you could imagine and then some.
Including the spartan advanced protection system, collision mitigation with adaptive cruise control and active braking, electronic stability control, automatic traction control, and seven exterior cameras, to name just a few of the safety features available on this luxury coach.
Also, for those looking for a specific type of floorplan, Foretravel has many different floorplan options for the Realm Presidential Series FS605, including the LV1, the LV2, the LV3, the LVMS (featured), the LVB, and the LVB with spa.
For more information on the Foretravel Realm Presidential Series FS605 and to see a full 3D walkthrough of the coach, check out Foretravel’s website by clicking here.
Longest Class A Motorhome Runner-Up: Emerald Prevost H3-45
Quick Specs
- Price: 2 Million
- Length: 45 Feet
- Gross Vehicle Weight Rating: 53,000 Pounds
- Slide-Outs: 4
- Bathrooms: 1 Full Bath + 1 Half Bath
- Sleeping Capacity: 4
The last two longest Class A motorhomes on the list are truly in a class of their own.
As they are not only one of the longest Class A motorhomes you can buy but also represent the absolute pinnacle of RV design and luxury for Class A motorhomes.
But if your looking to buy one of these ultimate Class A RVs, the process is a little different compared to your typically luxury RV buying process.
As these ultra-high-end luxury motorhomes require the deepest of pockets, with prices averaging around 2 million dollars.
But even if you had the 2 million dollars ready to go, ironically, you would still have to wait often a year or more to purchase one.
As you can’t just stroll onto an RV lot and pick one up.
As luxury coachbuilders such as Emerald, Liberty Coach, and Newell only make a couple dozen of their coaches each year and typically have very long waiting lists to purchase one of their RVs.
But if you have the cash and you’re willing to wait a year or more to take delivery, these ultimate Class A RVs offer unmatched luxury and opulence, as they are like a 5 Star hotel room rolling down the road.
Emerald Prevost H3-45
Speaking to the Emerald Prevost H3-45 directly though, this Class A motorhome is what is called a bus conversion, as it’s built on a commercial grade bus chassis that is then converted into a luxury RV.
But it’s not just any bus chassis that this luxury RV uses, as it uses the exclusive Prevost bus chassis, specifically the H3-45 Prevost bus chassis, which is where the name of this RV is derived from.
Which is a really big deal, as Prevost chassis are famous for their unmatched quality, construction, and over-engineering, allowing them to easily last for one million miles or more.
The Prevost chassis, on the Emerald Prevost H3-45, is just the start of the luxury on this ultra-high-end Class A motorhome though.
As the Emerald Prevost H3-45 has every bell and whistle you could imagine as well as unmatched exterior and interior design and styling, which seems only fitting on a motorhome that costs 2 million dollars.
For more information on the Emerald Prevost H3-45, check out Emarld’s website by clicking here.
Which is actually Liberty Coaches’ website, as Liberty Coach took over the sales, marketing, and service for Emerald Luxury Coaches in 2014.
Longest Class A Motorhome Runner-Up: Newell Coach p50
Quick Specs
- Price: 2 Million
- Length: 45 Feet
- Gross Vehicle Weight Rating: 63,300 Pounds
- Slide-Outs: 4
- Bathrooms: 1 Full Bath + 1 Half Bath
- Sleeping Capacity: 4
Newell is synonymous with luxury in the RV industry.
As they have been an industry leader in the ultra-high-end luxury coach market for decades.
Family-owned and operated since its inception in 1967, Newell has always been on the cutting edge of RV design and engineering.
As they were the first RV manufacturer to produce a diesel pusher motorhome.
And to this day offer some of the most advanced RVs money can buy, with industry-leading active suspension and steering tag axles.
In addition, Newell also uses their own custom chassis.
Allowing its customers the greatest amount of flexibility and customization when it comes to floorplans, storage, and interior refinements.
Which is one of the key differences between the Emerald Prevost H3-45 and Newell coaches.
Because while Emerald uses a stock Prevost bus chassis and then builds a luxury RV on top of it, Newell builds their own custom chassis and body from the ground up, so that the chassis and body sync up perfectly.
And Newell’s latest custom creation is the Newell p50, which was named in honor of Newell coaches 50th anniversary.
So you know Newell didn’t hold anything back in regards to luxury and features for this exclusive 50th-anniversary edition.
For more information on the Newell p50 and to see other luxury Class A motorhomes by Newell, make sure to check out their website by clicking here.
To see other large RVs that offer 3 bedrooms, check out our article “12 Must-See 3 Bedroom RVs (With Videos and Pricing)“.
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