Recall 12V526 affects 847 2010-2013 Tiffin Allegro Bus motorcoaches for insufficient exhaust heat shielding. Repair is free at any franchised Tiffin dealer.
Tiffin is recalling 847 2010-2013 Allegro Bus motorcoaches because insufficient shielding between the exhaust pipe and floor can overheat the floor above the engine compartment. If the exhaust pipe fails, escaping exhaust gases can make that floor area extremely hot and raise the risk of personal injury or fire; the Tiffin dealer repair will be free once available.
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What's wrong?
The underbody shield area on 2010-2013 Tiffin Allegro Bus motorcoaches is supposed to separate hot exhaust parts from the floor above the engine compartment. These coaches use a Cummins EPA 2010 ISL engine, and the exhaust pipe runs close enough to the floor that shielding matters. The shield's job is simple: block heat before it reaches the coach floor.
In recall 12V526, the problem is insufficient shielding between the exhaust pipe and that floor area. With too little heat protection, normal exhaust heat can collect above the engine compartment instead of being held away from the structure. That heat can overheat the floor surface and the materials around it.
There is no warning sign before failure. Owners should not rely on a smell, light, sound, or floor temperature change to confirm whether their Allegro Bus is included.
Who's affected?
Covers one Allegro Bus motorhome line across the 2010, 2011, 2012, and 2013 model years, all tied to the same body structure component.
| 2012 Tiffin Allegro Bus | body structure |
|---|---|
| 2010 Tiffin Allegro Bus | body structure |
| 2011 Tiffin Allegro Bus | body structure |
| 2013 Tiffin Allegro Bus | body structure |
| Units affected | 847 |
The year and model narrow the scope, but the VIN decides. Check your VIN to confirm whether your specific motorhome is included.
What's the safety risk?
An exhaust pipe failure in the engine compartment can send hot exhaust gases toward the floor area above the engine. That heat increases the risk of personal injury and fire. If the floor area feels extremely hot, stop using the motorhome and call a dealer for guidance. Repair will be free at any franchised Tiffin dealer once available.
What should I do?
- Check your VIN to confirm your 2010-2013 Tiffin Allegro Bus is included in this recall.
- Contact a franchised Tiffin dealer to schedule the free heat-shield installation that protects the floor above the engine compartment.
- Bring the recall notice if Tiffin mailed one. If not, reference recall number 12V526 when you call.
- Avoid using the motorcoach if the floor above the engine feels extremely hot, and ask the dealer what to do before moving it.
What happens at the repair
At the dealer, a Tiffin technician installs a heat shield between the exhaust pipe area and the floor above the engine compartment. That shield is meant to reduce heat transfer from the engine compartment into the coach floor. The dealer repair will be free once available for your VIN, with parts and labor covered under the recall. Call the dealer with recall 12V526 and ask whether the heat shield parts are open for your Allegro Bus.
Timeline
| October 31, 2012 | NHTSA published the recall |
|---|---|
| November 14, 2012 | Owner notification mailed |
Frequently asked questions
What is recall 12V526?
Recall 12V526 covers 847 2010-2013 Tiffin Allegro Bus motorcoaches equipped with a Cummins EPA 2010 ISL engine. The issue is missing or insufficient heat shielding between the exhaust pipe and floor above the engine compartment. Tiffin dealers install a heat shield for free.
What should I do if my 2010-2013 Tiffin Allegro Bus is on this recall?
Check your VIN to confirm your specific motorcoach is included in recall 12V526. If it is, contact a franchised Tiffin dealer to schedule the free heat-shield installation. Reference recall number 12V526 when you call the service desk.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and Tiffin's remedy for recall 12V526 is a dealer-installed heat shield free of charge. Parts and labor are covered at a franchised Tiffin dealer.
What is the safety risk in recall 12V526?
The safety risk is heat from escaping exhaust gases if the exhaust pipe fails in the engine compartment. In recall 12V526, that heat can make the floor area above the engine extremely hot, which raises the risk of personal injury or fire.
When did Tiffin begin the recall repair?
Tiffin began the safety recall repair on November 14, 2012. Owners with an included VIN can contact a franchised Tiffin dealer for the heat-shield installation, or call Tiffin at 1-256-356-8661 for recall support.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/12V526000 |
|---|---|
| Tiffin customer service | 1-256-356-8661 |
| NHTSA recall # | 12V526 |
| NHTSA recall # (full) | 12V526000 |
Source documents
-
Download Recall Document (PDF) (PDF) - Download Recall Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Quarterly Report (PDF)
- Download Defect / Noncompliance Notice (PDF) (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on June 2, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →