AI Damage2020 Thor Motor Coach Miramar: common problems
Owners of the 2020 Thor Motor Coach Miramar filed 3 complaints with NHTSA, most often about electrical system and engine. Details by component below, with sources.
Key figures
- Owner complaints
- 3
What fails most often
- 1 Electrical system 33% of all complaints
- 2 Engine 33% of all complaints
- 3 Parking brake 33% of all complaints
- 4 Visibility 33% of all complaints
- Electrical system: 1 complaints (33% of all).
- Engine: 1 complaints (33% of all).
- Parking brake: 1 complaints (33% of all).
- Visibility: 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 | 1 | 0 | 0 |
| Engine | 1 | 0 | 0 |
| Parking brake | 1 | 0 | 0 |
| Visibility | 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.
While driving on the highway at 60 MPH in a thunderstorm, the passenger windshield wiper collided with the driver's windshield wiper and became entangled with each other. I completely lost all wiper function and could no longer see the road.
The issue causes an extreme heat build up that melts spark plug wires, causes loss of power and/or misfiring, and could cause a vehicle fire which is not noted in your bulletin. This should have been a recall ceasing sales until affected Ford F-53s were repaired.
The contact stated while driving at 50 mph, the contactâs husband saw smoke and flames coming from underneath the front driverâs side undercarriage. The driver pulled the vehicle over to the side of the roadway and exited the vehicle and saw a fire underneath the undercarriage of the vehicle.
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 Miramar has 3 complaints (10 years in the data). This year has 3, above average.
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Parking brake. Electric parking brake, codes, calipers.
- Visibility. Wipers, mirrors, defrosters, cracked glass.
Other years of this model
Questions and answers
What are the most common problems with the 2020 Thor Motor Coach Miramar?
Owner complaints to NHTSA most often mention: electrical system, engine, parking brake. Total complaints: 3. The most frequent symptoms in complaint texts: smoke, burning smell, fire (67%), oil leak or consumption (33%), loss of power / limp mode (33%).
How many service bulletins (TSB) were issued for the 2020 Thor Motor Coach Miramar?
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 2020 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 2020 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.