AI Damage2015 Thor Motor Coach ACE: common problems
Owners of the 2015 Thor Motor Coach ACE filed 5 complaints with NHTSA, most often about electrical system and structure. Details by component below, with sources.
Key figures
- Owner complaints
- 5
What fails most often
- 1 Electrical system 40% of all complaints
- 2 Structure 40% of all complaints
- 3 Latches, locks, linkages 20% of all complaints
- Electrical system: 2 complaints (40% of all).
- Structure: 2 complaints (40% of all).
- Latches, locks, linkages: 1 complaints (20% of all).
Symptoms owners describe
How many of the 5 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 2 | 0 | 0 |
| Structure | 2 | 0 | 0 |
| Latches, locks, linkages | 1 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
There was a serious safety event to took place, where the wiring box under the bed created smoke and we could smell plastic burning. When investigated by my husband, he found that the box under the bed that housed all the wires for the RV had burn marks on the inside of the box and the wires and wire caps had melted.
After smelling a burnt smell, I investigated and found burnt and melted wire nuts within the power transfer switch. Numerous same issues are reported on the thor rv blog site. It appears that theh wire nuts commonly used in household construction come loose when used in a moving vehicle.
Cspc: rv door latch broke. Was not able to exit the vehicle. Latch fractured and could not be actuated by the handles.
Door latch failed. Was not able to exit vehicle. Latch broke so that levers did not actuate the latch.
Tl* the contact owns a 2015 thor motor coach ace. When the contact attempted to open the main entrance door, the latched failed to open and fractured. The contact had to use pliers to get the lock to turn, but failed. The contact mentioned that the door knob was made of cast zinc.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 14,283 of 36,659 model years in the NHTSA data (top 39% most complained about).
On average one model year of the ACE has 3 complaints (13 years in the data). This year has 5, above average.
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Structure. Rails, pillars, panel gaps, signs of pulling or welding.
- Latches, locks, linkages. Door, hood and tailgate latches, especially near the impact.
Other years of this model
Questions and answers
What are the most common problems with the 2015 Thor Motor Coach ACE?
Owner complaints to NHTSA most often mention: electrical system, structure, latches, locks, linkages. Total complaints: 5. The most frequent symptoms in complaint texts: door locks, latches, handles (40%), smoke, burning smell, fire (20%).
How many service bulletins (TSB) were issued for the 2015 Thor Motor Coach ACE?
NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2015 Thor Motor Coach ACE from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2015 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-06.