AI Damage2018 Thor Motor Coach Siesta: common problems
Owners of the 2018 Thor Motor Coach Siesta filed 1 complaints with NHTSA, most often about air bags. The maker issued 3 service bulletins for this year. Details by component below, with sources.
Key figures
- Owner complaints
- 1
- Technical service bulletins (TSB)
- 3
What fails most often
- Air bags: 1 complaints (100% of all).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Air bags | 1 | 0 | 0 |
| Electrical system | 0 | 0 | 2 |
| Equipment | 0 | 0 | 1 |
| Fuel system | 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.
Front passenger side airbag, chronic warning lights, multiple repair attempts by 1st and 2nd owner
Comparison
By complaint count this model year ranks 24,719 of 36,659 model years in the NHTSA data (among the 33% least complained about).
On average one model year of the Siesta has 1 complaints (6 years in the data). This year has 1, above average.
What to check before buying
- Air bags. Check the SRS light, stored codes and airbag/curtain status after any impact.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Fuel system. Fuel smell, leaks, rough running, fuel-system codes.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- This letter provides information regarding the Sprinter tank programming update
- 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 2018 Thor Motor Coach Siesta?
Owner complaints to NHTSA most often mention: air bags. Total complaints: 1. The most frequent symptoms in complaint texts: warning lights, check engine (100%).
How many service bulletins (TSB) were issued for the 2018 Thor Motor Coach Siesta?
NHTSA lists 3 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 2018 Thor Motor Coach Siesta 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 2018 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.