Owners Say
The Grand Design Momentum G-Class exhibits mixed reviews regarding build quality and reliability. While some owners praise its layout and spaciousness, such as the "great design and layout," others report significant issues, including leaks and assembly failures, leading to statements like "poor quality and follow-through." Customer service complaints are prevalent, with many reporting a lack of response from the manufacturer. Regarding value, opinions vary; some feel they paid too much for the quality received, while others believe it offers good features for the price. In summary, the Momentum G-Class shows potential but suffers from quality control and customer service inconsistencies.
28 reviews
Al's experience with the Grand Design Momentum G-class
2024 Grand Design Momentum G Class 350g
2.2
We decided to buy another Grand Design RV after our first GD was so well built. Man, a lot has changed! From the day we bought the RV there has been nothing but issues. The dealership has had it more than 7 months of the last 14 months. ...
Al Hayes
Texas - Sep 15, 2026
Originally reviewed on RvInsider.com
Sean's experience with the Grand Design Momentum G-class
2020 Grand Design Momentum G Class 320g
4.2
This RV checks almost all the boxes if you need a toy hauler but still camp in conventional campgrounds as it’s still under 40’. This is the trailer for you. Good kitchen storage , kitchen is cramped with more than 2 people in it at once. L...
Sean Schiebelhut
California - Oct 12, 2024
Originally reviewed on RvInsider.com
Jesse's experience with the Grand Design Momentum G-class
2021 Grand Design Momentum G Class 31g
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 t...
Jesse Alan Barker
Florida - May 18, 2024
Originally reviewed on RvInsider.com
Grand Design Momentum G Class RVs for sale
MOMENTUM G CLASS 350GGreen Bay, WI$80,394
Momentum G-Class 415GGreat Falls, MT$94,995
Momentum G-Class 350GGilroy, CA$94,995
Momentum G-Class 31GWinter Garden, FL$68,999
Momentum G-Class 320GCookeville, TN$80,995
Momentum G-Class 394GLas Cruces, NM$107,997
MOMENTUM 394GEvansville, WY$97,989
Momentum G-Class 31GBelden, MS$69,991
MOMENTUM G CLASS 355GAvondale, AZ$75,594
Momentum G-Class 25GGrants Pass, OR$69,854
Momentum 350GWildwood, FL$79,500
Momentum G-Class 350GIdaho Falls, ID$95,911
MOMENTUM G CLASS 23GCouncil Bluffs, IA$43,879
Momentum 29GSCalera, AL$95,686
Momentum G-Class 350GAbilene, KS$92,771
Momentum G-Class 27GElko, NV$61,950
MOMENTUM G-CLASS 23GHillsville, VA$30,000
Momentum G-Class 320GYorktown, VA$99,995
Momentum G-Class 320GTroy, OH$102,995
Momentum G-Class 25GLake Crystal, MN$79,995
Momentum G-Class 29GSShakopee, MN$69,955
Momentum G-Class 350GEvansville, WY$101,995
Momentum G-Class 394GBossier City, LA$90,488
MOMENTUM G CLASS 25GSalem, AL$80,998
Momentum G-Class 325GFresno, CA$110,995
Momentum G-Class 31GHammond, LA$69,991
Momentum G-Class 394GEldridge, IA$98,911
Momentum G-Class 25GBoise, ID$91,194
Momentum G-Class 29GSSt. George, UT$66,900
Momentum G-Class 320GMadison, AL$97,989
Momentum G-Class 27GGrand Junction, CO$71,900
Momentum G-Class 325GFountain Valley, CA$89,998*
Momentum G-Class 28GNampa, ID$54,995
MOMENTUM G-CLASS 21GHurricane, UT$27,455*
MOMENTUM G-CLASS 25GDelta, OH$39,500
MOMENTUM 21GUnion Gap, WA$52,998
Momentum G-Class 350GBozeman, MT$89,995
Momentum G-Class 28GLiberty, MO$28,988
Momentum G-Class 415GComfort, TX$99,900
Momentum G-Class 31GThurmont, MD$100,307
Momentum G-Class 21GShoemakersville, PA$66,995
Momentum G-Class 320GAshland, KY$109,995
Cindy's experience with the Grand Design Momentum G-class
2022 Grand Design Momentum G Class 350g
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 no...
Cindy Florit
Sep 17, 2023
Originally reviewed on RvInsider.com
Edward's experience with the Grand Design Momentum G-class
2022 Grand Design Momentum G Class 21g
4.4
My wife and I purchased this TT after our last one just decided it wasn't going on anymore vacations. We researched toy hauler travel trailers and after much review, settled on the Grand Design momentum 21G. Out the box it was a fantastic t...
Edward Hernandez
Feb 21, 2023
Originally reviewed on RvInsider.com
Gary's experience with the Grand Design Momentum G-class
2021 Grand Design Momentum G Class Momentum G Class
4.4
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'...
Gary
South Carolina - May 17, 2022
Originally reviewed on RvInsider.com