AI Damage2017 Thor Motor Coach Miramar: common problems
Owners of the 2017 Thor Motor Coach Miramar filed 8 complaints with NHTSA, most often about structure and equipment. The maker issued 1 service bulletins for this year. Details by component below, with sources.
Key figures
- Owner complaints
- 8
- Technical service bulletins (TSB)
- 1
What fails most often
- 1 Structure 75% of all complaints
- 2 Equipment 25% of all complaints
- 3 Powertrain 25% of all complaints
- 4 Engine 13% of all complaints
- 5 Latches, locks, linkages 13% of all complaints
- 6 Seats 13% of all complaints
- 7 Vehicle speed control 13% of all complaints
- 8 Visibility 13% of all complaints
- Structure: 6 complaints (75% of all).
- Equipment: 2 complaints (25% of all); manufacturer bulletins for this component: 1.
- Powertrain: 2 complaints (25% of all).
- Engine: 1 complaints (13% of all).
- Latches, locks, linkages: 1 complaints (13% of all).
Symptoms owners describe
How many of the 8 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) |
|---|---|---|---|
| Structure | 6 | 0 | 0 |
| Equipment | 2 | 0 | 1 |
| Powertrain | 2 | 0 | 0 |
| Engine | 1 | 0 | 0 |
| Latches, locks, linkages | 1 | 0 | 0 |
| Seats | 1 | 0 | 0 |
| Vehicle speed control | 1 | 0 | 0 |
| Visibility | 1 | 0 | 0 |
| Other | 2 | 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 is a electric privacy shade inside my RV for the windshield. My motor failed in the down position. I tried to get a replacement motor but none is available. I emailed the manufacturer of the shade and they gave me a replacement part number, this is where the safety issue comes in.
The adhesive bond between the panes of glass on the driverâs side frameless window has failed. Approximately 80% of the adhesive has failed allowing the front of the glass to detach. I not only fear it will now fall out while driving, but it is also constantly fogged up and hard to see my mirror.
We had a cargo door skin failure while driving on I20 in Dallas on a windy day, 2/1/21. We have a 2017 Miramar which is the cousin of the Challenger. It peeled off while driving and went airborne behind us. We were stunned as we heard the peeling off and saw the launch of the cargo door skin.
Transmission downshifted unexpectedly causing engine to rev beyond 4k rpms resulting in driver almost losing control. The only way to stop it was to push the gas pedal down which increased the rpms even more and adding to control issue. This occurred many times on hills with or without cruise control.
Propane heater severely over heats under cabinet that is right next to oven/stove causing a fire hazard. Hood of vehicle and side lockers open unexpectedly and locking mechanisms do not work properly both while stationary and in motion.
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 11,896 of 36,656 model years in the NHTSA data (top 32% most complained about).
On average one model year of the Miramar has 3 complaints (10 years in the data). This year has 8, above average.
What to check before buying
- Structure. Rails, pillars, panel gaps, signs of pulling or welding.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Latches, locks, linkages. Door, hood and tailgate latches, especially near the impact.
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 Miramar?
Owner complaints to NHTSA most often mention: structure, equipment, powertrain. Total complaints: 8. The most frequent symptoms in complaint texts: A/C or heater (13%), smoke, burning smell, fire (13%), windows, sunroof (13%).
How many service bulletins (TSB) were issued for the 2017 Thor Motor Coach Miramar?
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 Miramar 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 2026-11-05.