Thor Motor Coach GEMINI problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
6 owner complaints analyzed
8 distinct recall campaigns
4,739 mi median reported failure mileage
Scope: 2016 to 2023 model years. Data snapshot: . 2 complaints include usable failure mileage.
This selection has limited data. It remains available for lookup but is excluded from search indexing.
Most common problems
Electrical System is the most frequently named component, appearing in 1 of 6 complaints (16.7%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Braking behavior | 3 | 50.0% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Electrical System | 1 |
| Electrical System: Integrated Trailer Brake Control | 1 |
| Electronic Stability Control (Esc) | 1 |
| Equipment | 1 |
| Forward Collision Avoidance: Warnings | 1 |
| Lane Departure: Warning | 1 |
| Service Brakes | 1 |
| Structure | 1 |
Electrical System: 1; Electrical System: Integrated Trailer Brake Control: 1; Electronic Stability Control (Esc): 1; Equipment: 1; Forward Collision Avoidance: Warnings: 1; Lane Departure: Warning: 1; Service Brakes: 1; Structure: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 2 |
| 25,000 to 49,999 | 0 |
| 50,000 to 74,999 | 0 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 0 |
Under 25,000: 2; 25,000 to 49,999: 0; 50,000 to 74,999: 0; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0
Under 25,000 miles has the most reports with usable mileage (2). 4 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2020 | 1 |
| 2021 | 1 |
| 2023 | 2 |
| 2025 | 2 |
2020: 1; 2021: 1; 2023: 2; 2025: 2
Pattern summary
Electrical System leads the component reports. Braking behavior appears in 3 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 11351299 · 2020-08-26 (August 26, 2020)
THE REAR SPEED SENSOR ON MY 2018 THOR GEMINI RV WITH THE MERCEDES BENZ 3500 SPRINTER CHASSIS WENT BAD KNOCKING OUT MY ABS, STABILITY CONTROL AND CRUISE CONTROL ON A LONG TRIP. I WAS ON THE HIGHWAY DOING A STEADY 60-65 MPH. MY SPRINTER ONLY HAS 8,000 MILES ON IT. I'VE READ THIS IS A RECURRING PROBLEM ON THESE VEHICLES SO I THOUGHT I WOULD REPORT IT.
Owner-reported narrative. 8,000 miles reported. Look up ODI 11351299 at NHTSA ↗
Owner report 11642018 · 2025-02-11 (February 11, 2025)
This brake controller seems to apply full brakes regardless of the settings within the app. I have reinstalled it several times as directed by the manufacturere and each time I get on the road and just barely touch the brakes it locks the trailer brakes. This is dangerous since there is no way to test the system without driving.
Owner-reported narrative. Look up ODI 11642018 at NHTSA ↗
Recalls by model year
All campaigns in the snapshot affecting each model year, including recalls announced years later.
Recall campaigns
Shared campaigns appear once in each affected model year.
| Category | Count |
|---|---|
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 2 |
| 2020 | 4 |
| 2021 | 0 |
| 2022 | 1 |
| 2023 | 2 |
2016: 2; 2017: 2; 2018: 2; 2020: 4; 2021: 0; 2022: 1; 2023: 2