Grand Design Momentum G Class reviews

I decided to trade in my Motorhome for a Toy Hauler and chose Grand Design because of the supposedly good reviews they have that are very questionable today. I picked up my new Momentum 29G in December 2023, it was supposed to bring us fun and adventure. During the first rain, water started coming in through both sliders, the generator stopped working, black water started leaking, and the reclining seats came loose. I took it under warranty, they had it for 3 months. I went out in the RV and during the first rain, the same problem, water through both sliders and the generator not working. Three months again under warranty, they let me know it was ready, I pick it up and the same problem continues, water coming in through the sliders and the generator not working. 10 months later without using the camper, it is scheduled to go under warranty again. I have called and written to Grand Design and they have not resolved anything. This is my third RV, my first Grand Design and it will be the last. Show less

We searched many different RV's that would fit our needs. As with any RV, there must be a compromise between what is wanted, and what is available in the size/class you are buying. We settled on a Momentum G320 based mostly on the floor plan, features, and the limitations of our tow vehicle. The first issue was we found the 50amp power cord was bad (no power on one leg). This could have been discovered at the dealer during purchase, however the dealer we used was having construction work done on their electrical hook ups in the delivery area (this was not Grand Design's fault). The cord was replaced under warranty by another dealer during our first trip. The first system that we had issues with was the Lippert Ground Control auto leveling system. Got an error message and no information was available on how to correct it, system would not operate until the dealer re-set it. Second issue was the refrigerator. ultimately the problem was a bad ground connection, something which should have been done properly during construction. The dealer that did the repairs caused more problems than the original issue, but eventually fixed the problem (again, not Grand Design's fault). After owning the RV for over a year, still having issues with the auto leveling system, and found that the control board was bad. I had contacted Grand Design and they did agree to warranty the part if I had it repaired by a dealer or repair service. I had a mobile service come work on my RV (Kasey G's Mobile RV Repair) and they screwed up more than they fixed. I ended up doing the repair myself to not only replace the control board, but to repair the wiring damage they caused by incorrectly routing the wiring through the slide out in the framework. Although the issue with the repair was not Grand Design's fault, I never received any follow up calls or emails from them asking if the issue had been fixed. The cost of the control board was $400.00 however the system has functioned properly since my repair. I went to dump the freshwater tank (first time since purchase) and found the entire dump valve bonnet was broken due to the extreme angle that the extension handle was mounted at. I purchased and installed a new valve and re-positioned the handle so as not to stress the flimsy plastic valve. I have now owned the RV for 3 years. Almost every trip we take, I find screws on the floor which have fallen out of various things inside the RV, also I find many screw heads on the inside and outside that were broken off during assembly due to over torquing by the person doing the assembly. On the last trip we took, I was alerted by a passerby that something appeared to be flapping up on the roof. Upon inspection I found that the rubber roof membrane was somehow getting air under it during travel and was being pulled up from the wood underneath. I also found soft spots on the roof under the rubber membrane from unknown causes. Overall, I just don't see the quality in the fit and finish that Grand Design touts their product to be. They are assembled as quickly and cheaply as possible, but they want you to believe that they are somehow a better built product that other RV brands. I have owned five different RVs over the last 15 years, and my parents were avid RVer's for many years who owned many different RV's. I have found more assembly flaws in the Grand Design RV that I own now than I have found in any of the others I have owned. I will be trading or selling this RV in the near future and will be looking at other brands. Show less

The unit is great. The Samsung Refrigerator went out at 2.5 months of ownership. Six weeks later we are no closer to having our unit back as they have no one to diagnose the problem. It has to be a residential repairman. They have been a no show on two occasions. Great American RV said there is nothing that can be done. They have had my trailer longer than I have. Do not buy a unit with a Samsung Residential refrigerator. We are no closer to repair than we were 6 week ago. Show less

So I was on the road between Missouri and Florida. While getting fuel I noticed the the RV was sitting a little close to the ground. Looking over the RV I noticed I big crack in the outer shell. Drove it the last 400 miles very slowly and cautiously. Called insurance company once I was set up and they looked at it for about 2 months and totaled it as the frame was broke. This should never happen to an RV no matter how old it is. Some ruff rode on the highway did this. Unexepytable. Not happy at all!!!!! I had many other problems before this happened. Replaced one awning and second one needed replacement. Leather on furniture coming apart. Lights above kitchen table fell on the table. Spring for garage door broke. All seals on storage compartments leaked. And more. Show less

Great design and layout. The main thing that sold us was the size of the master bedroom and bathroom. We've come to appreciate the garage area not just for taking the golf cart and bikes but also when our grown children go with us; with it's half bath, large HappiJac bed, back patio and separate entrance door it becomes it's own little apartment so everyone has some privacy. It pulls well with the upgraded suspension and while it's a bit of a handful to get into a camping space it makes up for it once it is in place and set-up. The auto-leveling system is definitely a blessing. Kitchen space is good and the large pantry is a high note. Ours has the third AC unit, but even in 90+ degree temperatures we've never needed to run more than two. The dual gas/electric water heater is a nice feature, as are the 3 awnings, multi-head shower, and the magnetic slam close doors on the outside compartments. The only area where it seemed like Grand Design cut corners a little is in the original mattress on the main bed. There's no such thing as the absolute perfect RV but this comes as close as anything we've owned. Show less

This Toyhauler/Travel Trailer towed beautifully. The fit and finish and appointments are of the highest quality. All appliances and A/c and Heater work extremely well. The queen size mattress in the sleeping quarters is quite comfortable. The living area is easy to get around in and the rear ramp that turns into a fenced patio is a very nice feature especially when the awning is extended to provide shade when needed. All in all this is a very functional and comfortable RV. Show less