Grand Design Momentum Structure Problems
Owners have filed 140 complaints with NHTSA about structure problems on the Grand Design Momentum across 10 model years. The 2021 model year has the most (42). The words owners use most often: “frame flex” (34% of reports).
- 140structure complaints
- —median miles at failure
- 0mention a crash
- 0mention an injury
- 4related recalls
- 91%of reports with a speed happened at 50+ mph
What owners describe
Phrases that appear unusually often in these complaints compared with complaints about other cars.
- Frame flex: mentioned in 47 of 140 complaints (34%)
- Pin box: mentioned in 22 of 140 complaints (16%)
- Lag bolts: mentioned in 20 of 140 complaints (14%)
- Upper deck: mentioned in 18 of 140 complaints (13%)
At what mileage do structure problems happen?
Based on 12 complaints that reported the odometer reading.
How serious are the reports?
None of the 140 complaints report a crash, fire or injury.
Grand Design Momentum structure complaints by model year
| Model year | Structure complaints | Share of that year | Median miles |
|---|---|---|---|
| 2024 Momentum | 3 | 27% | — |
| 2023 Momentum | 20 | 80% | 8,500 |
| 2022 Momentum | 28 | 85% | 200 |
| 2021 Momentum | 42 | 72% | 8,000 |
| 2020 Momentum | 19 | 66% | 5,500 |
| 2019 Momentum | 9 | 60% | 15,050 |
| 2018 Momentum | 6 | 86% | — |
| 2017 Momentum | 3 | 23% | — |
| 2016 Momentum | 5 | 50% | — |
| 2015 Momentum | 5 | 100% | — |
When owners reported it
Related recalls (4)
Structure:body:step/ladder
Model years: 2024, 2025
Problem: Grand Design RV, LLC (Grand Design) is recalling certain 2024-2025 Momentum 320G, 325G, 344M, 250G, 351MS, 381MS, 392M, 395MS, 397THS, 398M, 399TH, 410TH, 414M, and 415G toy haulers, equipped with a removable step assembly. The clip-on bracket mounting bolts may come loose, allowing the steps to detach.
Risk: Steps that detach while in use increase the risk of injury.
Fix: Dealers will inspect the clip-on bracket and make repairs as necessary, free of charge. Owner notification letters were mailed May 15, 2025. Owners may contact Grand Design customer service at 1-574-825-9679. Grand Design's number for this recall is 910050.
Structure:body:step/ladder; equipment:recreational vehicle/trailer:materials:flooring
Model years: 2023, 2024, 2025
Problem: Grand Design RV, LLC (Grand Design) is recalling certain 2023-2025 Momentum fifth wheel trailers. The interior step base does not adequately support the step tread.
Risk: The tread may detach from the step, increasing the risk of a trip and fall injury.
Fix: Dealers will replace the step riser and step treads, free of charge. Owner notification letters were mailed January 16, 2025. Owners may contact Grand Design customer service at 1-574-825-9679. Grand Design's number for this recall is 910047.
Structure:body:door
Model years: 2022, 2023
Problem: Grand Design RV, LLC (Grand Design) is recalling 2022-2023 Momentum fifth wheels. The electric ramp door cut-off switch may allow for continuous power to the ramp door, which can cause the door to fall.
Risk: A falling ramp door increases the risk of injury.
Fix: Dealers will replace the door mechanism, free of charge. Owner notification letters were mailed August 24, 2022. Owners may contact Grand Design custom service at 1-574-825-9679. Grand Design's number for this recall is 910032.
Structure:body; equipment:recreational vehicle/trailer
Model years: 2022, 2023
Problem: Grand Design RV, LLC (Grand Design) is recalling certain 2022-2023 Momentum, Solitude, Imagine, Reflection, and Transcend travel trailers. The electric retractable awning has a welded seam on the fabric that may separate, potentially allowing the awning to drop beyond normal operation.
Risk: An awning that drops or extends beyond normal operation can increase the risk of injury.
Fix: Dealers will inspect and repair, or replace the awning, free of charge. Owner notification letters were mailed by August 22, 2022. Owners may contact Grand Design customer service at 1-574-825-9679. Grand Design's number for this recall is 910031.
What owners report
Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.
My fifth-wheel trailer is subject to NHTSA Safety Recall 26V-044 involving the axle U-bolts and leaf-spring attachment system. The recall repair was performed by an authorized Grand Design dealer. After the recall-related condition/repair, I discovered a broken bolt in the rear…
Frame flex frame has unbolted from inside of travel trailer on upper deck bedroom walls falling off
In early 2024 we noticed a binding on the bedroom slide, we took it in for service at Happy Daze in Ripon and the repair shop fixed the slide issue. After our next camping trip a month or so after the repair, we noticed a crack on the outside driver side of the front of the trailer above and below…
I am submitting this complaint regarding a 2022 Grand Design Momentum 381, that is exhibiting numerous symptoms commonly associated with excessive frame flex, structural deformation, and potential frame failure. The symptoms observed include concerns affecting multiple structural systems of the RV…
On a recent camping trip across the country, about half way we noticed that the door was not latching correctly, then we noticed fine powdery sawdust and bigger chunks of saw dust. We started to notice squeaking in [XXX] When we got to [XXX], a loud crunching noise was developing, starting out…
Frequently asked questions
Do all Grand Design Momentums have structure problems?
No. NHTSA has 140 owner complaints about structure for the Grand Design Momentum. Complaint data shows that the problem is reported, not how many of all cars sold are affected.
Was there a recall on the Grand Design Momentum structure?
Yes: 4 safety recalls list structure. Check your VIN on NHTSA.gov to see whether the fix was done on your car.
What do owners say about structure problems on the Grand Design Momentum?
The most frequent phrase is “frame flex”, in 47 of 140 complaints, followed by “pin box” (22).
See all Grand Design Momentum problems.