repaired · 2026 Q3
Leaf spring assembly: u-bolt, leaf spring to axle
NewRisk. An axle that moves out of position can cause a loss of vehicle control and increase the risk of a crash.
2021 Grand Design MomentumProblems, recalls & complaints
NHTSA has logged 58 owner complaints about the 2021 Grand Design Momentum, most often about the structure. It is covered by 4 safety recalls, and for recall 22V-038 the manufacturer reports only 33% of affected cars repaired.
Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through October 2, 2026. Updated daily.
Complaints by system
Where the 2021 Grand Design Momentum has problems
58 complaints grouped by the system owners reported.
42Structure
19Suspension
9Latches/locks/linkages
3Equipment
2Service brakes
1Power train
1Exterior lighting
1Electrical system
| System | Complaints | Crash, fire or injury |
|---|---|---|
| Structure | 42 | 0 |
| Suspension | 19 | 0 |
| Latches/locks/linkages | 9 | 0 |
| Equipment | 3 | 0 |
| Service brakes | 2 | 0 |
| Power train | 1 | 0 |
| Exterior lighting | 1 | 0 |
| Electrical system | 1 | 0 |
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
4 recalls
2021 Grand Design Momentum recalls and how many were fixed
Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.
repaired · 2025 Q2
Leaf spring assembly: u-bolt, leaf spring to axle
Risk. An axle that moves out of position can cause a loss of vehicle control and increase the risk of a crash.
repaired · 2023 Q4
Appliance: refrigerator
Risk. An electrical arc increases the risk of a fire.
repaired · 2023 Q1
Recreational vehicle/trailer: lpg systems
Risk. Excessive gas pressure and a larger than intended appliance flame can increase the risk of a fire.
Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with Grand Design.
Best & worst years
2021 vs. every other Momentum year
Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the Momentum median. How we score
'13'14'15'16'17'18'19'20'21'22'23'24'25'26
- Avoid
- Caution
- Solid
- Best
- Not rated
1 investigation
NHTSA defect investigations
Federal investigations that included the 2021 Grand Design Momentum, and the recalls they led to.
- Frame Flex on Grand Design Fifth Wheel Recreational TrailersOpen
In owners' words
What Momentum owners report
Recent structure complaints filed with NHTSA, shortened. Personal details are removed.
We own a 2021 Grand Design Momentum 393g toy hauler that has severe frame flex and bolts in slide have started backing out. We noticed this when driving and the extreme pushing/chucking when accelerating or braking and also the visible failure on the unit. We have contacted Gran Design, the…
I am reporting a serious, progressive structural defect involving excessive frame flex and structural failure on a 2021 Grand Design Momentum 395MS fifth-wheel RV. This complaint directly aligns with the ongoing NHTSA investigation PE24-0209. The unit exhibits clear and worsening structural…
Regarding 2021 Grand Design Momentum 376THS: Compartment doors popping open during transport; Grand Design Customer Satisfaction Campaign TSB-24-001 dated 11/1/2025 regarding frame flex and wall securement. Returned to dealer on 12/1/2025 for inspection. Dealer found the following: All doors except…
Own a 2021 Momentum?
Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.