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Model year

2021 Thor Motor Coach ACE

Other, gasoline, 4x2, built in United States. Owner complaints on file from Oct 4, 2021 to Jul 8, 2024.

Recall campaigns covering this model year171 vehicles or units across those campaigns
Owner complaints31.5 times the median 2021 other
Severity index0.02021 others average 7.1
First 24 months2Complaints in its first two years
Complaints over time

Complaints about the 2021 Thor Motor Coach ACE peaked in 2021, with 2 filed

Owner complaints about this model year, by the year they were filed with NHTSA.

00.511.522021220222023202420252026
Source: NHTSA ODI complaints file. The lighter column runs through October.
Components

67% of complaints about the 2021 Thor Motor Coach ACE name electrical system

Owner complaints by component. Hover or focus a bar for the crash, fire, injury or death count.

Electrical system
2
Engine and cooling
1
Powertrain
1
Suspension
1
Speed control
1
Source: NHTSA ODI complaints file. A complaint can name more than one component; it is counted under the first.
Recalls

One recall campaign covers the 2021 Thor Motor Coach ACE

Check a specific vehicle by VIN on NHTSA's site: a campaign may cover only part of a model year's production.

Recall campaigns for the 2021 Thor Motor Coach ACE
CampaignFiledSubjectComponentVehiclesRemedy
20V-339Jun 9, 2020Adhesive bond between the glass and the metal hinge frame of the frameless windows may fail which would then allow the glass to detach and fall outVisibility and wipers71Part replacement
Source: NHTSA ODI recalls file.
Owner complaints

What owners reported about the 2021 Thor Motor Coach ACE

The full text of every complaint filed with NHTSA about this model year, newest first. Complaints are filed by owners and are not verified by NHTSA; NHTSA removes personal details before publishing.

3 complaints on file, page 1 of 1.

  1. Filed Jul 8, 2024Failure Jul 6, 2024Tinley Park, ILElectrical system

    Air conditioner compressor wouldn't engage in rv. Called a mobile technician. Mobile technician found burnt and melted connectors on the control board. Technician stated the connectors used for 120v power were 12v crimp connectors and had burned and melted from the amperage. Technician stated that these used connectors were illegal to use for 120v. This is a safety concern and could result in a fire. Stated we were lucky the control board melted and didn't result in a fire and burn down the coach.

    NHTSA complaint 11600287
  2. Filed Oct 28, 2021Failure Oct 22, 2021Westminster, SCElectrical system, Engine, Vehicle speed control

    Returning home from trip, route US I26 in NC, heading down 6 degree hill lost all speed control. The following dash lights came on: ABS, Engine Service, the Wrench, anti sway control. We were able to roll to the side of the road just before an entrance ramp. There was no acceleration control.

    NHTSA complaint 11438528
  3. Filed Oct 4, 2021Failure May 3, 2021Brick, NJPower train, Suspension

    The contact owns a 2021 Thor Motor Coach Ace RV. The contact received notification of NHTSA Campaign Number: 21V202000 (Suspension, Power Train) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The local dealer and the manufacturer were made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

    NHTSA complaint 11435409
Source: NHTSA ODI complaints file.
Investigations

NHTSA has not opened an investigation on this model year

Source: NHTSA ODI investigations file.
Service bulletins

2 manufacturer communications cover this model year

Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall.

  • RC000219SAOwner May 19, 2021 · Service Bulletin/Repair Instructions
    On your vehicle, the rear axle may contain an inadequate volume of lubricating oil. An inadequate volume of rear axle lubricant may result in rear wheel bearing damage potentially leading to bearing seizure. Bearing seizure may lead to rear axle or drives…
  • RC000219SADealer May 19, 2021 · Service Bulletin/Repair Instructions
    On your vehicle, the rear axle may contain an inadequate volume of lubricating oil. An inadequate volume of rear axle lubricant may result in rear wheel bearing damage potentially leading to bearing seizure. Bearing seizure may lead to rear axle or drives…
Source: NHTSA manufacturer communications files.