AI Damage2020 Thor Motor Coach Gemini: common problems
The maker issued 6 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 6
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 0 | 0 | 2 |
| Service brakes | 0 | 0 | 2 |
| Steering | 0 | 0 | 2 |
Comparison
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
- Steering. Steering play, power assist, rack and tie rods after a wheel impact.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- MBAG has determined that on certain model year 2019-2020 Sprinter vehicles, the retaining washer on the…
MBAG has determined that on certain model year 2019-2020 Sprinter vehicles, the retaining washer on the bolt that connects the brake pedal to its bearing block could come loose. If the retaining washer were to come…
- On certain model year 2012â 2018 5-ton Sprinter vehicles that were upfitted into campers or recreational…
On certain model year 2012â 2018 5-ton Sprinter vehicles that were upfitted into campers or recreational vehicles (âRVsâ), one or more of the rear-wheel speed sensors may experience an electrical failure, which…
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On certain model year 2012â 2018 5-ton Sprinter vehicles that were upfitted into campers or recreational vehicles (âRVsâ), one or more of the rear-wheel speed sensors may experience an electrical failure, which…
- Model/Model Year to Add
2017 Chateau 2017-2018 Chateau Citation 2017 Four Winds 2017-2019 Gemini 2017-2019 Quantum 2017-2019 Four Winds Siesta 2017-2019 Synergy 2018 Compass 2018 Freedom Elite 2021 Sanctuary 2021Tranquility PLEASE NOTE- Due…
- It has been determined that on certain Mercedes-Benz Sprinter vehicles, the hydraulic power steering…
It has been determined that on certain Mercedes-Benz Sprinter vehicles, the hydraulic power steering return line hoses might detach at their connection points under certain operating conditions, which could cause…
Other years of this model
Questions and answers
What are the most common problems with the 2020 Thor Motor Coach Gemini?
There are no owner complaints in the NHTSA data for this year; the data comes from 6 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2020 Thor Motor Coach Gemini?
NHTSA lists 6 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 Gemini 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 2026-11-04.