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Grand Design Momentum reviews

3.5 (75 reviews)
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Liveability
3.8
Overall quality
3.0
Floorplan
4.3
Driving/towing
3.7
Factory warranty
2.9

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Voted most helpful review

Dennis Hamilton

California, USA

Reviewed on June 7, 2024

RV reviewed 2023 Grand Design Momentum 320g view listing

2.4
I’m sure everyone like my wife and I want to get away and an RV and enjoy the experience and go to different places. My wife and I had a 2009 stellar eclipse toy hauler over the years. We had to replace many of the junk parts that they put on this unit. My wife and I would always notice the Grand...read more
I’m sure everyone like my wife and I want to get away and an RV and enjoy the experience and go to different places. My wife and I had a 2009 stellar eclipse toy hauler over the years. We had to replace many of the junk parts that they put on this unit. My wife and I would always notice the Grand Design momentum has been the top of the class draft about buying one for six years and then decided this year. We pulled the plug and bought one. The momentum 320 G looks good from the outside, but things went wrong the very beginning on the first day of our first trip the middle air condition went out that took seven weeks to repair. On second trip the generator would start. It doesn’t look like a bright future for traveling in our Grand Design momentum 322. I’m expressing to you that the quality of products have no quality buyers beware
Livability
3.0
Overall quality
3.0
Floorplan
3.0
Driving/towing
1.0
Factory warranty/support
2.0
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Voted most helpful review

Debbie Nielsen

Washington, USA

Reviewed on June 6, 2024

RV reviewed 2018 Grand Design Momentum 388TH view listing

5.0
Ours is a 2018 that we have had absolutely no problem with. I take that back, we had a small slide issue that Grand Design quickly provided us with a replacement part for no cost. We simply paid a RV mobile repair to install and its been great since! We have been living in ours since June 2022,...read more
Ours is a 2018 that we have had absolutely no problem with. I take that back, we had a small slide issue that Grand Design quickly provided us with a replacement part for no cost. We simply paid a RV mobile repair to install and its been great since! We have been living in ours since June 2022, purchased used. This has been an exceptional unit. Our 2022 Ram 3500 pulls this without issue. Lots of storage, I can't say enough great things about our home!
Livability
5.0
Overall quality
5.0
Floorplan
5.0
Driving/towing
5.0
Factory warranty/support
5.0
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Voted most helpful review

Jesse Alan Barker

Florida, USA

Reviewed on May 18, 2024

RV reviewed 2021 Grand Design Momentum G Class 31G view listing

1.0
They'll make you as the consumer, jump through hoops to fix the problems with their units. Calling any idea they have "suggestions" so they can weasel out of coverage of anything done to your unit per their "suggestions" Even if you show them proof of the issues (video, written documentation,...read more
They'll make you as the consumer, jump through hoops to fix the problems with their units. Calling any idea they have "suggestions" so they can weasel out of coverage of anything done to your unit per their "suggestions" Even if you show them proof of the issues (video, written documentation, multiple witnesses, etc.) and show that the parts they've installed are out of specification - they'll assume no liability leaving you with the bills and an unsafe expensive camper because they choose not to fix it. They'll try to bully you into submission when you stand up to them as well, I've found and anytime they have information that hurts their case further they will call you rather than continue in email correspondence so they can try to lose the paper trails. They'll also tell you that people with 30+ years' experience don't supersede their techs who claim nothing is wrong when they've proven time and time again their products are failing. They'll also blame you - your experience, tow vehicles, hitch(es), everything they can to push blame from their units. In my case the trailers axles were installed 5" out of spec in terms of front to rear positioning, and also have a 1/2" difference between a front & rear hanger diagonally causing sway, bounce, tracking issues, movement etc. in the trailer. I've learned since that I'm not the only owner experiencing this issue and not many have found solutions that work. Those who have, I've tried with no difference made in my particular unit. Now I'm told it's my responsibility to pay a 3rd party out of pocket to prove (again) that there's still an issue. Then, once I do; it must be reviewed by their team before they deem it something they need to fix under their "warranty". I have since found cracks in the trailers frame and gaps / drops throughout the flooring inside. I have filed a report with the NHTSA at this time providing every detail, email, invoice, photo, video proof, and written statement.
Livability
1.0
Overall quality
1.0
Floorplan
1.0
Driving/towing
1.0
Factory warranty/support
1.0
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Voted most helpful review

Caine W Kimble

Idaho, USA

Reviewed on January 17, 2024

RV reviewed 2022 Grand Design Momentum 395M view listing

1.2
We bought a brand new 2022 Grand Design Momentum 395 MS in June 2022. We shortly started having issues with everything. The door couldn't be shut unless you slam it. The garage door and track broke. We weren't able to use the patio or entrance at all. The sewer line cracked and started leaking....read more
We bought a brand new 2022 Grand Design Momentum 395 MS in June 2022. We shortly started having issues with everything. The door couldn't be shut unless you slam it. The garage door and track broke. We weren't able to use the patio or entrance at all. The sewer line cracked and started leaking. (Not during winter months). The wall separating the garage from living room separated from the ceiling. The walls were coming apart in the bedroom. The furnace would not turn on in the middle of the night unless I got up and turned it on manually every one-two hours. We had the ignitor board fixed. This only worked for a couple of weeks and then we started having the same issue again. We took it into Bish's where it sat for 5 months while they tried to fix everything. They ended up replacing the entire furnace and everything else. The ceiling immediately separated again. The oven ignitor went out and the entire oven had to be replaced. After another couple of weeks the furnace started doing the same thing. We had the motherboard replaced and the command center. The ignitor board went out again and had to be replaced. We had to replace the female power outlet to connect to power. We soon discovered that the water system is completely defective and started leaking after 20+ hours of repairs we finally stopped the leaking. Due to the tubing and clamp job they did during manufacturing the entire water system needs to be relined and redone. The lines in the shower need to be redone requiring the walls to be removed. The lines underneath the sink all need to be fixed as well. We fixed the propane regulator finally fixing the furnace issue during the night. After 3 months of infrequent use of the BRAND NEW furnace the motor burned out again. The entire venting system is not correctly done. Per the Suburban manual we are supposed to have 4.4 vents we barely have 3 and that was after fixing the 4 inch vent we had the one in the kitchen opened out more because it was never completely opened during manufacturing and occluded approximately 85%. The foam seal was blocking the air flow we were only receiving 1 x 1.5 in of air flow through a 4 inch duct. In order to prevent the motor from continuing to burn out we need to add another 4 inch and 1.5 in vent. We use this 5th wheel for work. We are unable to leave it anywhere for very long without winterizing it because since the furnace won’t work everything will freeze. This is a defective unit. Since the duct system is a preexisting issue NWAN will not cover these expenses. The faulty duct system is causing the motor in the furnace to burn out and it only takes a couple of uses of the furnace to burn it out. The issues with this camper has disrupted our work, displaced my family, and has cost us thousands of dollars in repairs on top of traveling, hotels, loss of food. We are not new to 5th wheels, this being our third. We wanted the Grand Design because it is marketed as a high-quality top of the line product. We are grossly dissatisfied with Grand Design and their customer service team. We have called and are told they are unable to disclose any information about our claim only the agent can. I have sent two emails since 1/4/2024 and have not received any responses. We have already spoken to the dealership. We don't think us eating $35,000 + is fair for a defective product Grand Design manufactured. We are defeated and done. Our family is separated and displaced. The issues are never ending, we feel like we finally get everything fixed and the next day it’s something else. We don’t want this camper anymore or any other camper that Grand Design has touched.
Livability
1.0
Overall quality
1.0
Floorplan
2.0
Driving/towing
1.0
Factory warranty/support
1.0
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Voted most helpful review

Bradley Weaver

Reviewed on October 9, 2023

RV reviewed 2022 Grand Design Momentum 395M view listing

5.0
We lived in our 395 for 10 months and it was amazing. Our kids loved it. Floor plan was perfect for family of 5. Nice living room layout. Grand design was exceptional quality. As we traveled across the US we heard story after story of poor quality rvs. Grand design must be the best. I felt...read more
We lived in our 395 for 10 months and it was amazing. Our kids loved it. Floor plan was perfect for family of 5. Nice living room layout. Grand design was exceptional quality. As we traveled across the US we heard story after story of poor quality rvs. Grand design must be the best. I felt so blessed we bout this rig. It held up so well!
Livability
5.0
Overall quality
5.0
Floorplan
5.0
Driving/towing
5.0
Factory warranty/support
5.0
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Voted most helpful review

Wayne Carpini

Reviewed on October 4, 2023

RV reviewed 2023 Grand Design Momentum 38 view listing

1.8
Where to begin. After one day old it’s back at the dealership for warranty. The oven needs to be replace. The refrigerator doesn’t work so it needs to be replace. The microwave comes on by itself so it needs to be replaced. The fuel station tank is cracked so contaminants and water got...read more
Where to begin. After one day old it’s back at the dealership for warranty. The oven needs to be replace. The refrigerator doesn’t work so it needs to be replace. The microwave comes on by itself so it needs to be replaced. The fuel station tank is cracked so contaminants and water got inside the tank so it needs to be replaced. Fuel lines of generators clogged up. No help from Grand Design. Brand new trailer. I had it one day now it sits at the dealership while I make payments. Grand Design is absolutely no help. Don’t buy a Grand Design Trailer. Run away from it as fast as you can. What a nightmare. The list goes on and on. Grand Design is Trash.
Livability
1.0
Overall quality
1.0
Floorplan
5.0
Driving/towing
1.0
Factory warranty/support
1.0
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Voted most helpful review

Wayne Carpini

Reviewed on September 27, 2023

RV reviewed 2023 Grand Design Momentum 38 view listing

2.2
I’m very unhappy. 2 days old. Fridge,oven,microwave AC And Heat does not work. All have to be replaced. WOW not even a week old never was able to use it. I believe Grand Design is now making very expensive garbage.Run away do not purchase one of these Trailers. Buyer beware. You have been...read more
I’m very unhappy. 2 days old. Fridge,oven,microwave AC And Heat does not work. All have to be replaced. WOW not even a week old never was able to use it. I believe Grand Design is now making very expensive garbage.Run away do not purchase one of these Trailers. Buyer beware. You have been warned. All I have now is a 120k lump of coal and a payment.
Livability
1.0
Overall quality
1.0
Floorplan
5.0
Driving/towing
3.0
Factory warranty/support
1.0
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Voted most helpful review

Cindy Florit

Reviewed on September 17, 2023

RV reviewed 2022 Grand Design Momentum G-Class 350G view listing

2.4
We received our special order grand Design 350 G two months before it was supposed to be ready. Picked it up at Lazy Days RV in Tampa Florida. We were walked through with maybe 15 minute show and tell how everything works. The couch was not what we ordered and we're told it was a mistake....read more
We received our special order grand Design 350 G two months before it was supposed to be ready. Picked it up at Lazy Days RV in Tampa Florida. We were walked through with maybe 15 minute show and tell how everything works. The couch was not what we ordered and we're told it was a mistake. Everything thing else seemed in order from the generator to the solar panels. Get home with our brand new camper and started cleaning it the next day. It was filthy. Took 2 days to clean and couldn't believe the damage. Looks like some one lived in it. Cracked cabinets, sinks and countertops deeply scratched. Some of the valances had only 1 bracket and were an inch away from the wall. Couldn't even open the recliners because of it. Seals on slides you can see thru. Called Lazy Days and sent photos 2 times. Never got a response!!!!! DON'T BUY FROM LAZY DAYS!!! And GRAND DESIGN company is going down hill fast. !!!
Livability
2.0
Overall quality
2.0
Floorplan
3.0
Driving/towing
3.0
Factory warranty/support
2.0
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Voted most helpful review

Tina Tongen

Reviewed on July 21, 2023

RV reviewed 2016 Grand Design Momentum M-Class 388M view listing

5.0
We've been living the dream with our Grand Design Momentum 388M Toy Hauler 5th Wheel for years! The 14' garage is not just for toys; it's our fancy office space! The living room and kitchen layout is a total win, and the TV's diagonal placement and groovy blue LED lights in the entertainment center...read more
We've been living the dream with our Grand Design Momentum 388M Toy Hauler 5th Wheel for years! The 14' garage is not just for toys; it's our fancy office space! The living room and kitchen layout is a total win, and the TV's diagonal placement and groovy blue LED lights in the entertainment center set the perfect mood when we enter. Plus, the abundant storage thanks to the 8' 8" ceilings and tall cabinets makes organizing a breeze. Oh, and we can't forget to mention the awesome layout of the bedroom with his + her closets. Life's a blast in this bad boy! 🚀🌟
Livability
5.0
Overall quality
5.0
Floorplan
5.0
Driving/towing
5.0
Factory warranty/support
5.0
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Voted most helpful review

Julie

Reviewed on June 21, 2023

RV reviewed 2021 Grand Design Momentum M-Class 395M view listing

1.6
If you're looking to spend six figures for an RV that has very little storage, a Norcal refrigerator that's never worked, slide outs that break within 13 months and switches engineered with telephone wire, this is the RV for you. In two years, I've had it back for warranty work (which was not done)...read more
If you're looking to spend six figures for an RV that has very little storage, a Norcal refrigerator that's never worked, slide outs that break within 13 months and switches engineered with telephone wire, this is the RV for you. In two years, I've had it back for warranty work (which was not done) four times. The refrigerator is nothing more than a giant magnet occupying 50% of my kitchen. The few times the freezer momentarily worked, it quickly stopped, resulting in an inch of water pooling in the bottom of the freezer. The bathroom has minimal storage and the slide out for the master stopped working before a year, so driving around with our closet two feet into the road is always a blast. We've made many friends at RV parks who flag us down to let us know about our protruding slide out and rust streaming down the side thanks to the leaking water heater. Because the slide out is broken we have the joy of not being able to use the right side of the master closet or getting out of the bed without slamming our knee into it. The back switch that moves the toy hauler bed up and down stopped working, so we are unable to drive any vehicles in or out of the toy hauler without hot wiring the switch (which incidentally is a phone cord). The toy hauler bathroom black tank won't empty (the lever is stuck) and the self leveling worked precisely four times, so playing marbles is always an option for rainy nights. We love betting which direction the marble will travel. We opted to dissect the showerhead and found it offers a multitude of water pressure regulators ensuring any female has zero chance of washing her hair. The kitchen faucet completely came off. Just as if someone has sawed it off with a machete. For reference, we are a couple in our fifties. No small children terrorizing the camper. It's been used fewer five times. To be fair, it does tow well. I'd suggest finding an alternative.
Livability
1.0
Overall quality
1.0
Floorplan
2.0
Driving/towing
3.0
Factory warranty/support
1.0
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