NHTSA lists 3 complaints for the 2021 Thor Motor Coach ACE, 0 of them mention a crash and 0 mention a fire. 0 complaints mention an injury, with 0 injuries and 0 deaths reported.
Data build 2026-10-09.
NHTSA lists this vehicle as THOR MOTOR COACH ACE.
At a glance
Complaints
3
With crash
0
With fire
0
With injury (complaints)
0
Injuries
0
Deaths
0
Recalls
1
Do not drive recalls
0
Park outside recalls
0
Recall potential units (maximum)
71
Investigations
0
Open investigations
0
Manufacturer communications
2
Complaints per 100k sold unavailable. No sales source is available for this record.
Where the complaints are
Top systems
System
Complaints
Share of this vehicle's complaints
ELECTRICAL SYSTEM
2
66.7%
ENGINE
1
33.3%
POWER TRAIN
1
33.3%
SUSPENSION
1
33.3%
VEHICLE SPEED CONTROL
1
33.3%
Top subsystems
System
Subsystem
Complaints
One complaint can name several systems, so shares can add to more than 100 percent.
Confidence is the model's own probability for the label it chose (0 to 1), not accuracy.
Model-generated labels on tagged complaints only. Model years 2013 and newer are tagged in full; 2012 in part (see tagged_share); earlier model years have no tags. NHTSA's own flags remain separate in the complaints block.
Defect: Thor Motor Coach (TMC) is recalling certain 2020-2021 ACE, 2021 Four Winds and 2020 Gemini, Axis, Compass, Delano, Windsport, Hurricane, Outlaw, and Vegas motorhomes. The adhesive 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 out.
Consequence: If the window glass detaches while the vehicle is moving it could become a projectile, increasing the risk of a crash.
Remedy: TMC will notify owners, and dealers will inspect the frameless windows for proper adhesive bond strength, replacing the windows as necessary, free of charge. The recall began July 10, 2020. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000192.
Do not drive: No. Park outside: No.
Investigations
0 investigations; 0 open.
Manufacturer communications
2 manufacturer communications.
Communications by system
System
Count
POWER TRAIN
2
ENGINE AND ENGINE COOLING
1
FUEL SYSTEM, OTHER
1
SERVICE BRAKES
1
10197977
Date: 2021-05-19. Type: Service Bulletin/Repair Instructions. Systems: ENGINE AND ENGINE COOLING, POWER TRAIN.
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 driveshaft failure. A rear axle or driveshaft fai
10197978
Date: 2021-05-19. Type: Service Bulletin/Repair Instructions. Systems: FUEL SYSTEM, OTHER, POWER TRAIN, SERVICE BRAKES.
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 driveshaft failure. A rear axle or driveshaft fai
Notes on this record
Complaints from the API and bulk file are merged and deduplicated by ODI number; the API alone misses records.
System and subsystem counts are numbers of distinct complaints, recalls or communications that name them. One record can name several systems, so shares across systems can add to more than 100 percent; a single share never exceeds 100 percent.
Recalls are counted once per campaign, investigations once per action and manufacturer communications once per NHTSA id, even when NHTSA lists several model names for the same record.
A sales denominator is a calendar-year proxy, not the population of vehicles still in use. Rates are copied from verified pipeline output.