AI Damage2017 Thor Motor Coach ACE: common problems
Owners of the 2017 Thor Motor Coach ACE filed 3 complaints with NHTSA, most often about electrical system and latches, locks, linkages. The maker issued 1 service bulletins for this year. Details by component below, with sources.
Key figures
- Owner complaints
- 3
- Technical service bulletins (TSB)
- 1
What fails most often
- 1 Electrical system 67% of all complaints
- 2 Latches, locks, linkages 33% of all complaints
- 3 Structure 33% of all complaints
- 4 Tires 33% of all complaints
- Electrical system: 2 complaints (67% of all).
- Latches, locks, linkages: 1 complaints (33% of all).
- Structure: 1 complaints (33% of all).
- Tires: 1 complaints (33% of all).
Symptoms owners describe
How many of the 3 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 |
| Latches, locks, linkages | 1 | 0 | 0 |
| Structure | 1 | 0 | 0 |
| Tires | 1 | 0 | 0 |
| Equipment | 0 | 0 | 1 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
The contact stated that the entry door latch mechanism failed to lock the rv door. The contact was unable to enter the vehicle. The vehicle was not taken to a dealer or independent mechanic for diagnostic testing. The vehicle was repaired. The manufacturer was made aware of the failure and did not assist.
While driving approximately 55 mph and towing a trailer with a compact vehicle inside, the rear passenger side inside dual tire suddenly experienced a blowout. During the tire blowout, wires connecting the lighting system that were located in the wheel well were damaged.
Our motor coach experienced a shorted wire in the water heater junction box due to improper splicing in an area where no splicing should have been necessary. That same electrical circuit which, per the nec and thor's factory specifications should have been on a dedicated breaker, was not on a dedicated breaker which…
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 17,152 of 36,659 model years in the NHTSA data (top 47% most complained about).
On average one model year of the ACE has 3 complaints (13 years in the data). This year has 3, about average.
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Latches, locks, linkages. Door, hood and tailgate latches, especially near the impact.
- Structure. Rails, pillars, panel gaps, signs of pulling or welding.
- Tires. Tire age by DOT code, bulges, wear pattern.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- This letter stated that there was one (1) Service Notification issued for the month of October, 2017
Other years of this model
Questions and answers
What are the most common problems with the 2017 Thor Motor Coach ACE?
Owner complaints to NHTSA most often mention: electrical system, latches, locks, linkages, structure. Total complaints: 3. The most frequent symptoms in complaint texts: A/C or heater (33%), door locks, latches, handles (33%), smoke, burning smell, fire (33%).
How many service bulletins (TSB) were issued for the 2017 Thor Motor Coach ACE?
NHTSA lists 1 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 2017 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 2017 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.