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Grand Design · NHTSA safety record

2021 Grand Design Momentum

Every safety complaint, recall and defect investigation the US government holds on this vehicle.

Owners have filed 57 safety complaints about the 2021 Grand Design Momentum with the US government. Of those, 1 describes a crash and no death is recorded. 4 recall campaigns are open against it, covering the suspension and equipment.

The most complained-about system is the body structure, named in 42 complaints, 74% of the total.

Compiled from NHTSA's complaint, recall and investigation files · Covers June 2022 to September 2026 · How this is counted

What is on file

57 complaints on file

57

Complaints

1

Describe a crash

0

Mention fire

0

People injured

0

Deaths

A complaint is an unverified account by the person who filed it, not a finding of fault. One complaint is one ODI number, which is how NHTSA counts them.

Complaints fell 35% year on year: 13 in the twelve months to 2026-Q2, against 20 in the twelve before.

A recall is the manufacturer conceding a defect, and the repair is free. Whether one covers your particular car is a question only its VIN can answer, because a campaign covers a production range rather than a model year. A further 1 defect investigation is open and unresolved.

Which system owners named

Complaints naming each system
STRUCTURE 42 · 74%
UNKNOWN OR OTHER 27 · 47%
SUSPENSION 18 · 32%
LATCHES/LOCKS/LINKAGES 9 · 16%
EQUIPMENT 3 · 5%
SERVICE BRAKES 2 · 4%
ELECTRICAL SYSTEM 1 · 2%
EXTERIOR LIGHTING 1 · 2%
POWER TRAIN 1 · 2%
0 19 38

Red marks a system with a recall campaign against it. One complaint can name several systems, so these add up to more than 57.

When the complaints arrived

By the year NHTSA received them

By the year NHTSA received them, which is not the year the failures happened. They peaked in 2024 at 24.

28 21 14 7
22 23 24 25 26

This is the year the complaint was filed, not the year the failure happened. The range runs from 2022 to 2026, the last of them a part year, which is why its column is drawn faint.

Crash test ratings

NHTSA New Car Assessment Program

NHTSA has not crash tested the 2021 Grand Design Momentum. Its New Car Assessment Program tests a selection of each year's vehicles and does not reach motorcycles, heavy trucks, motorhomes or most low-volume models, so an absence here says nothing about how the vehicle would perform. It is not a low score.

What owners have reported about this vehicle is below, and it is a different question: a crash test measures what happens to the people inside in a controlled impact, while a complaint records what broke during ordinary use.

Recall campaigns

4 on file

SUSPENSION:FRONT:SPRINGS:LEAF SPRING ASSEMBLY:U-BOLT, LEAF SPRING TO AXLE

26V044000 · January 26, 2026

The defect
Grand Design RV, LLC (Grand Design) is recalling certain 2021-2024 Momentum and 2022-2024 Solitude Fifth Wheel trailers. The U-bolt may become loose due to inadequate preload and preload losses, causing the axle to move out of position.
The risk
An axle that moves out of position can cause a loss of vehicle control and increase the risk of a crash.
The remedy
Dealers will replace the axle attachment components, free of charge. Owner notification letters were mailed May 15, 2026. Owners may contact Grand Design customer service at 1-574-825-9679. Grand Design's number for this recall is 910054. This recall supersedes NHTSA Recalls 23V490 and 24V193.

Grand Design RV, LLC · up to 7,585 vehicles across all model years covered

SUSPENSION:FRONT:SPRINGS:LEAF SPRING ASSEMBLY:U-BOLT, LEAF SPRING TO AXLE

23V490000 · July 17, 2023

The defect
Grand Design RV, LLC. (Grand Design) is recalling certain 2021-2024 Momentum and Solitude fifth wheels, equipped with certain CURT 7000 and 8000 lb axles. The U-bolts may have been improperly tightened, which can cause the axle to move out of position.
The risk
An axle that moves out of position can cause a loss of vehicle control and increase the risk of a crash.
The remedy
Dealers will inspect and tighten the U-bolts, as necessary. Any damaged components will be replaced. Repairs will be performed free of charge. Owner notification letters were mailed August 16, 2023. Owners may contact Grand Design customer service at 1-574-825-9679. Grand Design's number for this recall is 910039.

Grand Design RV, LLC · up to 6,270 vehicles across all model years covered

EQUIPMENT:APPLIANCE:REFRIGERATOR

22V038000 · January 28, 2022

The defect
Grand Design RV, LLC (Grand Design) is recalling certain 2013-2021 Momentum, Solitude, and Reflection recreational vehicles. A 110-volt wire in the refrigerator cabinet may be improperly secured, which could result in the wire contacting the refrigerator cooling unit, causing an electrical arc.
The risk
An electrical arc increases the risk of a fire.
The remedy
Dealers will inspect and replace any damaged wiring, and properly secure the wires, free of charge. Owner notification letters were mailed on February 21, 2022. Owners may contact Grand Design customer service at 1-574-825-9679. Grand Design's number for this recall is 910026.

Grand Design RV, LLC · up to 43,421 vehicles across all model years covered

EQUIPMENT:RECREATIONAL VEHICLE/TRAILER:LPG SYSTEMS

21V393000 · May 26, 2021

The defect
Grand Design RV, LLC (Grand Design) is recalling certain 2016-2021 Imagine, Transcend, and Momentum travel trailers. The LP regulator that controls the LP gas pressure may fail, allowing excessive gas pressure that causes the appliance flame to increase.
The risk
Excessive gas pressure and a larger than intended appliance flame can increase the risk of a fire.
The remedy
Dealers will replace the LP regulator, free of charge. Owner notification letters were mailed June 24, 2021. Owners may contact Grand Design customer service at 1-574-825-9679. Grand Design's number for this recall is 910023.

Grand Design RV, LLC · up to 55,508 vehicles across all model years covered

Defect investigations

1 on file

An investigation means NHTSA has decided a pattern is worth examining. A preliminary evaluation is often closed with no action; an engineering analysis is the stage that usually precedes a recall.

Frame Flex on Grand Design Fifth Wheel Recreational Trailers

PE24029

Still open preliminary evaluation · opened October 9, 2024

the body structure

The Office of Defects Investigation (ODI) has received twenty-three complaints alleging excessive frame flex on model year 2017-2023 Grand Design fifth wheel recreational trailers, models Momentum and Solitude. Twenty-two of the complaints allege that excessive frame flex resulted in a cargo or entry door opening while in transit, some with objects lost on roadways, while six complaints also state that slideouts extended out partially. ODI has been in contact with both Grand Design and Lippert, the frame manufacturer. Grand Design believes that some frame flex, generally considered to be vertical movement in the upper deck area of the fifth wheel, is normal. However, Grand Design has developed a technical service bulletin (TSB), to evaluate concerns of excessive frame flex, defined as vertical movement greater than 3/8 inch. Per Grand Design, the frame flex is only occurring in the upper deck area of the fifth wheel and is resulting in cosmetic defects such as moving sidewalls, damage to cabinets, binding doors, etc. However, Lippert believes that the effects of frame flex may also extend back to the front axle of the trailer.While Lippert provides frames for multiple trailer manufacturers, the majority of complaints are for these Grand Design products. Cargo and entry doors that open and slideouts that extend while in transit increase the risk of injury or a crash. ODI is opening this Preliminary Evaluation (PE) to evaluate the severity of the potential problem and to determine whether an unreasonable risk to motor vehicle safety exists. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

In owners’ own words

Quoted from the complaint file

Quoted from NHTSA's complaint file. These are unverified accounts by the people who filed them, not findings of fault.

UNKNOWN OR OTHER

crash

We had a towing incident chain's came detached from camper one side was only tack welded when contacted grand design got no where with them

NHTSA complaint 11471009. Filed by an owner and not verified by NHTSA or by us.

SUSPENSION
Upon returning from a recent trip I discovered that the passenger side rear leaf spring had snapped in to, near the rear leaf spring hanger. The equalizer also had cracked welds because of the incident. Thankfully the front of the leaf spring was still attached. This RV issue may be related to the widely documented frame flex issue. 1) The RV is at home in my storage shed. 2) Our safety and other motorists were put at risks because if the axle would have completely detached from the frame, it could have caused a catastrophic accident. 3) The broken leaf spring has been removed (picture of broken leaf spring, and equalizer attached). I plan to have a certified NRVIA inspector come inspect

NHTSA complaint 11767267, quoted in part. Filed by an owner and not verified by NHTSA or by us.

STRUCTURE
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 manufacturer, for warranty repair and was able to go see the unit when they torn down to look at frame. The side walls were both broken and wall frame fell out when opened up. The unit is now at the manufacturer in Indiana for repair, my husband did not feel it was safe to tow so we requested manufacturer transport the unit. We were told by a Lippert Frame Tech the unit is not safe to use.

NHTSA complaint 11750219. Filed by an owner and not verified by NHTSA or by us.

STRUCTURE
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 integrity failure, including: Slideouts and doors open during transport. Upper deck walls moving under load Lag bolts missing or backing out and pushing through flooring At least one critical structural bolt missing from factory installation Floor deformation and slope changes in the upper deck Slide-out malfunction due to frame distortion Loud popping and snapping noises while towing consistent with

NHTSA complaint 11749089, quoted in part. Filed by an owner and not verified by NHTSA or by us.

SUSPENSION
Frame cracked and suspension issues.

NHTSA complaint 11740465. Filed by an owner and not verified by NHTSA or by us.

STRUCTURE:BODY
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 p/s compartment door warped or bowed; P/S cracking in sidewall paneling on slides Front cap mollding broken screws Deformation or cracks at expansion joint located under upper deck slide out Gapping between exterior wall and floor Screw cover separation around front bulkhead Loose or shifted wall panel trim; trim pulled away from floor Crinkling wallpaper and cabinet paneling loos in upper

NHTSA complaint 11739799, quoted in part. Filed by an owner and not verified by NHTSA or by us.

UNKNOWN OR OTHER
Scheduled appointment with dealer for the Grand Design Frame Flex recall today, 22 May 2026. Approximately 4 hours after dropping the trailer off the dealer called and said that the technician found significant frame flex and that the unit was unsafe to be towed. No other information was provided. I did ask for the measurements that the TSB 24-001 requires to be filled out ans submitted to Grand Design. The lady that called was completely unaware of what I was asking for.

NHTSA complaint 11739591. Filed by an owner and not verified by NHTSA or by us.

Compare

Other years of the Grand Design Momentum

Model year Complaints Recalls Deaths
2024 11 6 —
2023 25 9 —
2022 33 8 —
2020 29 2 —
2019 15 2 —
2017 13 2 —
2016 10 4 —

Other 2021 Grand Design models

Solitude 31 Reflection 23 Imagine 18

Complaints on file, same model year.

Every Grand Design on this site — 24 vehicles.

If this is your car and a dealer keeps failing to fix it, your state's lemon law may require the manufacturer to replace it or buy it back. How many repair attempts it takes, and how long you have to file, is set by the state you bought in and by nothing on this page.

Where these numbers come from

A complaint is one owner's account and has not been verified by NHTSA or by us. A vehicle with more complaints is not necessarily worse: models that sold in larger numbers collect more of them. How this is counted.

Compiled and maintained by
Independent developer and analyst