2025 Entegra Coach Cornerstone 45D Review

Make no mistake: The 2025 Entegra Coach Cornerstone 45D is a top-of-the-line luxurious Class A diesel pusher — one that pairs uncompromising amenities with head-turning style. Abundant storage and a sumptuously outfitted cockpit area make it the perfect RV for extended excursions or full-time living. But it doesn’t stop there. This spectacular motorhome is filled with wonderful surprises. There’s Italian leather furniture. There’s a massive master bedroom suite. And much, much more.

At a Glance: Cornerstone 45D

The Entegra Coach Cornerstone sits at the peak of Entegra’s RV lineup on a decked-out Freightliner chassis. Although it’s available in five floorplans, I had the opportunity to review the 45D floorplan. With that being said, the Cornerstone 45D is an impressive RV — both inside and outside. Quite frankly, it has “all the things” — and then adds some additional nice surprises. This Cornerstone 45D is priced — appropriately — with an MSRP of $963,631.

Check the Specs

Sleeping capacity: 4
GVWR: 54,000 pounds
CCC: 20,000 pounds
Towing capacity: 20,000-pound hitch (with 7-pin plug)
Engine: Cummins 15-liter X15 turbocharged 605HP diesel
Transmission: Allison 4,000 MH 6-speed
Engine brake: Three-stage
Number of slide-outs: 4
Exterior length: 44 feet 11 inches
Exterior width: 8 feet 5 inches
Exterior Height: 12 feet 8 inches
Fresh/Gray/Black: 100/62/41 gallons
Black tank macerator: Yes
Fuel tank: 175 gallons (150 with Freightliner chassis)
Awnings: Two dual pitched power awnings
Solar panels: 2
Diesel generator: Onan® 12,500W

Features We Love

120-inch windshield
360-degree camera
Massive storage capacity in basement and cabinets
Powered drawers in basement storage area
Heated/cooled driver and passenger seats
Reclining front passenger seat with footrest
Very comfortable furniture
Spacious bathroom
Whisper-quiet, 150,000 Btu air conditioners (3)
Auto-leveling
42-inch TV on televator
Spacious walk-in wardrobe
Portable Camco, cooler-style fridge (on power tray in basement)
Very comfortable king bed
Air mattress in pull-out sofa (so guests are comfortable too!)
Onboard washer/dryer
Luxurious ceramic tile floors throughout

Benefits

Power entry steps are easy to navigate, with no catch points
Fantastic cockpit design provides incredible visibility, while keeping everything within easy reach
Driver and passenger get to ride in sumptuous comfort
Passenger side gets a power floor, so their feet don’t dangle over the stairwell
Spacious kitchen design with lots of counter space and storage
Timeless decor will always look stylish
Adjustable dining table expands for dinner guests
Lots of room to entertain guests
You can bring everything with you
Easy clean surfaces
Ready to go off-grid for extended periods

Challenges

Only sleeps four, so having kids and grandkids overnight for retirees will require creative sleeping arrangements
Additional license may be required to drive tag axle and air brakes
Single entry may make emergency egress difficult.
Priced at $963,631, the Cornerstone won’t fit everyone’s budget.

Best For

This RV is perfect for singles or couples who want to downsize from a house and hit the road full time. It’s also an outstanding choice for singles or couples who love to travel and take extended road trips.

Key Areas That RV Trader Reviews

RV Trader asked RV shoppers what was most important to them in their RV buying process. Potential buyers — like you — helped us to identify a list of six key areas that camping and travel enthusiasts always look at when they’re searching for the perfect RV: sleeping space, bathroom, living area, four-season capabilities, and storage space.

The RV Trader team then got to work providing you with an honest and unbiased evaluations. And that’s where I come in. I’m Lynne Fedorick, RV expert and enthusiast. I provide an honest look at RVs from an RV industry insider perspective. That way, you can learn the good, the bad, and the intriguing about any RVs I review. I inspect each RV with the buyer’s perspective at the forefront. And I always evaluate those six key areas that buyers have told us that they have in mind.

So, that said, let’s take a closer look at the 2025 Entegra Coach Cornerstone 45D.

Sleeping Space

The Cornerstone 45D boasts a spacious master bedroom with a king size bed. On each side of the bed is a nightstand (with plug-ins and USB ports) that could easily hold a CPAP machine. At night, you can cuddle up and watch TV on the 32-inch smart TV in the wardrobe cabinet.

Accommodating an overnight guest or two is no problem. The queen, pull-out sofa bed provides additional sleeping space in the living room. Its combination air and pillow top mattress promises to help guests to drift off to sleep comfortably.

A note on sleeping space: It’s good to have options when it comes to sleeping areas. Having a drop-down bunk over the cockpit could possibly an owner to accommodate both grandchildren and their parents.

This view gives you an idea of just how luxurious the master bedroom is. Note particularly the storage over the bed and the walk-in closet to the back.

Opposite the king-size bed, the TV, window, shelf, and yet more cabinets await.

The Cornerstone 45D is really on a quest to have it all. Here you can see the stacking washer/dryer set in the walk-in closet. And then there’s eight feet of wall-to-wall closet rods for hanging clothes.

Additional sleeping space for guests is limited to two more, but the pull-out sofa bed is very nice. As a queen, it’s perfectly spacious for adult guests.

Bathroom

This Class A features a spacious full bathroom located at the rear of the coach. And when I say spacious, I mean it. This bathroom is larger than the bathroom in many conventional homes. Its glass-enclosed shower walls are lined with gorgeous Italian tiles. On one shower wall, there’s a wooden bench that can be deployed when you just want to sit and enjoy a relaxing spa shower in your home on wheels. Tall people will love this shower because there’s so much space. The wall that faces the shower has a double vanity with plenty of storage both in the vanity and in the medicine cabinet above it.

The second bathroom is actually a powder room with a toilet and sink and oodles of cabinet storage. Both bathrooms in the Cornerstone 45D have top of the line ceramic toilets.

The bathroom is absolutely stunning. And large.

The eye is instantly drawn to the shower with its gorgeous Italian tiles.

Taller RVers will love the head room in the shower.

A nice look at the the double sink vanity. The whole bathroom really shimmers.

Living Area

The living area of the Cornerstone 45D features a plush, ultra-soft, Italian leather sofa bed. Across from the sofa bed are matching 74-inch power theater seats that have bells and whistles. There is heating. There are USB ports. And there’s even a flip-down armrest that contains cup holders and storage for remotes and other small items.

Across from the theater seats, a big 43-inch TV ascends from a televator cabinet with the touch of a button. Having a small crowd over to watch the game? Don’t worry about seating space. The front seats in this RV turn around to provide two more comfortable, reclining armchairs. The dining table is integrated with a buffet style cabinet and extends for seating for up to five people.

Outside, a large awning provides additional living space outdoors where you can watch your favorite shows on — or tailgate with — a 43-inch smart TV with a sound bar.

Take a look at this exquisite cabin. It’s extraordinarily spacious.

This is the theater seating sofa. It sits directly across from the hide-a-bed sofa of the exact same length, which makes the cabin very conversational.

The hide-a-bed sofa, pictured here, folds out into a very roomy queen-size bed.

This two-person dinette with chairs is very intimate.

Kitchen

I loved the kitchen in the Cornerstone 45D. Quite simply, it has everything I love in a kitchen. This kitchen features generous counter space. It has a farmhouse style sink and a cool pull-out peninsula. When deployed, the peninsula provides even more counter space, as well as additional kitchen storage.

There’s also a lot to love in this kitchen with a huge pantry, pull-out spice cabinet, and all kinds of handy built-in features in the solid wood cabinets. I also loved the pull-out trash chute and wine glass rack.

Appliances in the Cornerstone 45D include a two-burner induction stovetop, a 1.9 cubic-foot microwave/convection oven, and a residential-style French door refrigerator with a big freezer drawer beneath it. However, I admit I’d like to see a three-burner stovetop. Although a two-burner stove will get you through most meal prep, it’s good to have options. Sure, it could be argued there’s loads of space for a hotplate. But adding another burner to the Cornerstone 45D would eliminate the need to pack another appliance with you.

A good look at the residential-style fridge with French doors — and freezer.

On the other side, you can see how much counter space you get. The faucet in the sink is a pull-down. However, I’d prefer to see a three-burner stove, versus the two-burner stove in this model.

The splendor of the Cornerstone 45D’s cabinetry is not diminished by opening them.

Four-Season Capabilities

Cold morning floors are a thing of the past with the Cornerstone’s Aqua-Hot heated tile flooring. Additionally, the R16-R33 insulation package, heated tanks and two blissfully quiet air conditioners help to give the Entegra Cornerstone 45D robust four-season capabilities.

This Entegra Coach diesel pusher has a total of 400 watts of solar power that provides freedom to go off-grid. However, it’s the massive 12500-watt diesel generator that makes boondocking for extended periods entirely possible.

Storage Space

The 2025 Entegra Coach Cornerstone 45D has more storage space than any RV I have seen. It starts with massive basement storage compartments, which also have electronic, click-lock mechanisms. Power sliding drawers inside the basement storage compartments could hold golf clubs. And fishing gear. And everything else that you might want to bring. But it’s kept in an organized and easily accessible way. There’s also a unique electric cooler on its own power drawer that can be used to keep beverages within easy reach.

Inside, the Cornerstone 45D find unique ways to integrate storage. Throughout the RV, cabinets abound. In the master bedroom, more storage can be found under the bed and in the huge walk-in closet. The walk-in closet that dominates the rearmost area of the Cornerstone 45D also contains a decent sized, stacking washer and dryer. This ultra-efficient location for laundry machines means you don’t need to tote laundry around for folding and storage. With the addition of a folding table, you could get the laundry done and stored in the drawers — or the eight feet of wall-to-wall closet rods in the walk-in closet. This motorhome gives you these kind of storage options.

These power sliding drawers are proof that Entegra Coach went all-in on luxury, inside and out.

Compartment for your Camco, cool-style fridge, which is also on a power tray.

A little look at the under-the-bed storage.

Another angle of the walk-in closet, with its wall-to-wall hanging space and cabinets.

Closing Notes on the Cornerstone 45D

View from the Cockpit

The 2025 Entegra Coach Cornerstone 45D’s cockpit was clearly designed to keep you comfortable and safe on the road. From the driver’s perspective, visibility is fantastic. Everything is within reach. The 10-foot windshield is made from specialized, zero-distortion glass imported from Turkey. Mirrors are set up to be viewed through the windshield, instead of the side windows to maximize safety. A premium backup camera provides a 360-degree view of what’s around the coach. On top of that, every control is within easy reach. (Even for those with smaller stature.)

Both driver and passenger get reclining plush captain’s chairs that feature power adjustment and heating. Everything is so perfectly comfortable. It’s actually easy to visualize craving even more miles after driving this RV for hours.

But there are plenty of things to enjoy in park, as well. Flooring is ceramic tile in a driftwood plank design, even in the slide-out. The Cornerstone 45D’s lack of carpet (and laminate flooring) means its floors will look like new for many years with very little maintenance.

Visibility in the Cornerstone 45D is exceptional. And it goes beyond the 10-foot windshield. The 360-degree camera is wonderful to have when driving a vehicle of this size.

The Cornerstone45D has a power floor, which means a passenger’s feet don’t have to gangle over the entry steps.

Summing Up the Cornerstone 45D

As a retired firefighter, I would love to see all RVs come with a fire extinguisher that’s right at hand in the cockpit, the kitchen, and the living area. RVs (especially those designed for retired folks) should have at least two doors for safe emergency egress. This is one area Entegra Coach could do a little better.

Overall, Entegra Coach has really knocked it out of the park with the Cornerstone 45D. Extensive amenities and storage combine with thoughtful design and meticulous craftsmanship to leave absolutely nothing to be desired. I’ll admit I loved this RV at first sight. Everything about it is gorgeous. The only thing that prevents me from being completely smitten with this RV is its $963,631 price tag. (Oh well, I can always dream.) But for new full-timers looking to swap a house for a motorhome that offers similar residential offerings, this would be a great fit.

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