2021 Grand Design MOMENTUM problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
56 owner complaints analyzed
4 distinct recall campaigns
11,500 mi median reported failure mileage
Scope: 2021 model year. Data snapshot: . 4 complaints include usable failure mileage.
Most common problems
Unknown Or Other is the most frequently named component, appearing in 27 of 56 complaints (48.2%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Braking behavior | 4 | 7.1% |
| Electrical and battery issues | 2 | 3.6% |
| Transmission and shifting | 1 | 1.8% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Unknown Or Other | 27 |
| Structure:Body | 24 |
| Suspension | 17 |
| Structure | 14 |
| Latches/Locks/Linkages:Doors:Latch | 9 |
| Structure:Frame And Members | 4 |
| Equipment:Recreational Vehicle/Trailer | 3 |
| Service Brakes | 2 |
Unknown Or Other: 27; Structure:Body: 24; Suspension: 17; Structure: 14; Latches/Locks/Linkages:Doors:Latch: 9; Structure:Frame And Members: 4; Equipment:Recreational Vehicle/Trailer: 3; Service Brakes: 2
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 3 |
| 25,000 to 49,999 | 1 |
| 50,000 to 74,999 | 0 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 0 |
Under 25,000: 3; 25,000 to 49,999: 1; 50,000 to 74,999: 0; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0
Under 25,000 miles has the most reports with usable mileage (3). 52 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2022 | 3 |
| 2023 | 3 |
| 2024 | 24 |
| 2025 | 19 |
| 2026 | 7 |
2022: 3; 2023: 3; 2024: 24; 2025: 19; 2026: 7
Pattern summary
Unknown Or Other leads the component reports. Braking behavior appears in 4 complaint narratives. Electrical and battery issues appears in 2 complaint narratives. Transmission and shifting appears in 1 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 11477900 · 2022-08-06 (August 6, 2022)
Bolts holding brake caliper assembly to the axle apparently loosen and fell out while on the highway. This caused the caliper to drop, resting on inner part of the tire rim, leaving approximately half to one quarter of the caliper on the disc. Caliper caused significant gouging on the rim. During braking, the caliper was prevented from spinning during brake application due to it hitting the axle u-bolt retention plate on top of the leaf spring. In the very limited backing, the hydraulic line held back the caliper. Safety issues are the comple…
Owner-reported narrative. Look up ODI 11477900 at NHTSA ↗
Owner report 11593059 · 2024-06-07 (June 7, 2024)
This is an updated report with additional detail. Sorry for any confusion this may have caused. * Baggage door routinely open while travelling. A number of items may have been sucked out of the RV while moving down the road. We try to be hypervigilant and pull over as soon as we notice the door flapping open, and we secure loose items in drawers. * RV doors routinely open. The front door always opens, even though we use the 'deadbolt'. It's usually held in place by a hand rail that folds over the door, but this occassionally comes open, as wel…
Owner-reported narrative. Look up ODI 11593059 at NHTSA ↗
Owner report 11590944 · 2024-05-28 (May 28, 2024)
We are victims of frame failure. First sign was a creaky floor in the bedroom. Screws worked their way out of the wood flooring and pushed up underneath the linoleum. The movement of the nose cap pushed screws out of the trim and seal piece on the underside of the front cap. We reseated screws, upgraded screws, resealed this at least 5 times and now use gorilla tape to avoid water intrusion. The underbelly has fallen down while traveling so we had to reinforce this ourselves. Our driver side bay door will fly open when traveling. It locks but t…
Owner-reported narrative. Look up ODI 11590944 at NHTSA ↗
Owner report 11608146 · 2024-08-13 (August 13, 2024)
The contact owns a 2021 Grand Design Recreational Momentum. The contact stated that while having maintenance work completed on the RV, the dealer removed the nose cap and noticed that the insulation and the mylar tarp near the rear of the RV was burned. The contact was informed that the wiring on the nose cap had been overheating and causing the burn. The dealer had reconnected the wiring but had not repaired the RV. The manufacturer was made aware of the failure. The failure mileage was 40,000.
Owner-reported narrative. 40,000 miles reported. Look up ODI 11608146 at NHTSA ↗
Owner report 11641738 · 2025-02-10 (February 10, 2025)
We started noticing issues on our RV and reported it to Grand Design. Those issues included bolts holding front philon breaking and loosening, wallpaper at base near floor shifting, excessive new noises on slide movement, lippert legs stopping due to being off balance on level ground, stress cracks in front cap, sawdust in pantry cabinet, loose lag bolts upon further inspection and dresser panel repeatedly popping off on travel days. Based on the issues, we took it to a a GD dealer (La Mesa in Sanford FL) for inspection. After measurements I …
Owner-reported narrative. Look up ODI 11641738 at NHTSA ↗