While towing my 2026 Grand Design Momentum 27MAV travel trailer at highway speeds, the driver's-side exterior siding/wall panel began separating and bulging outward from the sidewall. I was later informed the siding attachment system had failed and the unit required significant warranty repairs. Because this defect occurred while traveling on a public roadway, I am concerned that exterior components could detach and create a hazard for other motorists. The RV was less than one year old when the failure occurred. Additional defects involving floor buckling and moisture intrusion later required factory-level inspection and repairs. I request that NHTSA investigate whether this sidewall attachment failure represents a broader manufacturing defect affecting other Grand Design RV units.
2026 Grand Design Momentum
Owners filed 1 complaints about this vehicle with federal regulators, most often about the body and frame. No safety recall has been issued.
Too new to rank against other Grand Design Momentum years; complaints take a few years to arrive. Which Grand Design Momentum years to avoid →
Most common 2026 Grand Design Momentum problems
1 of the 1 complaints (100%) are about the body and frame.
| Component | Reports | Crashes | Fires | Injuries | |
|---|---|---|---|---|---|
| Structure › Body · body and frame | 1 | 0 | 0 | 0 |
What owners reported
Newest filingsAll 1 complaints, reproduced as filed.
Across model years
Worst on record: 2021Reading this record
No unusual pattern of severe incidents in the complaint record.
Complaint counts track how many cars were sold and how long they have been on the road as much as they track quality. A common model from 2013 has had a decade to accumulate reports; a rare one from last year has not. The signal worth weighing is in the severity columns, in whether the same component keeps appearing, and in whether the manufacturer eventually opened a recall for it.
Most recent recall on file: none. Source: NHTSA Office of Defects Investigation.