2026 Grand Design Momentum problems

Filed Oct 28, 2026 · Body · NE

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 the federal safety agency investigate whether this sidewall attachment failure represents a broader manufacturing defect affecting other Grand Design RV units.