U.S. public vehicle records

2006 Tiffin ALLEGRO BUS problems and owner complaints

Explore the records behind recurring owner reports.

Key facts

3 owner complaints analyzed

4 distinct recall campaigns

30,000 mi median reported failure mileage

Scope: 2006 model year. Data updated: 2026-10-01 (October 1, 2026). 2 complaints include usable failure mileage. View data status.

This selection has limited data. It remains available for lookup but is excluded from search indexing.

Owner-reported patterns

Most common problems

Engine And Engine Cooling:Engine:Diesel is the most frequently named component, appearing in 1 of 3 complaints (33.3%). A complaint can name multiple components.

Recurring terms in complaint narratives
Topic	Matching reports	Share of complaints
Engine operation	1	33.3%

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.

Engine And Engine Cooling:Engine:Diesel

Engine And Engine Cooling:Exhaust System:Emission Control

Power Train

Engine And Engine Cooling:Engine:Diesel: 1; Engine And Engine Cooling:Exhaust System:Emission Control: 1; Power Train: 1

Reported problems by failure mileage

Complaint counts in mileage bands. These are not failure rates per vehicle or mile.

Under 25,000

25,000 to 49,999

50,000 to 74,999

75,000 to 99,999

100,000 to 149,999

150,000 and above

Under 25,000: 1; 25,000 to 49,999: 0; 50,000 to 74,999: 1; 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 (1). 1 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.

2006

2007

2016

2006: 1; 2007: 1; 2016: 1

Pattern summary

Engine And Engine Cooling:Engine:Diesel leads the component reports. Engine operation appears in 1 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 10202627 · 2007-09-04 (September 4, 2007)

ISL CM850 ENGINE STOP ENGINE NOW AND OTHER PROBLEMS. CUSTOMER STATES THAT THE #6 WRIST PIN WAS BAD. THE WRIST PIN WAS REPLACED. THEN CONSUMER WAS INFORMED THAT THE MANIFOLD GASKET WAS OUT OF LINE. THAT WAS REALIGNED. *KB ONCE THE GASKET WAS RE-ADJUST, THE ENGINE KNOCK DISAPPEARED. *JB

Owner-reported narrative. Look up ODI 10202627 at NHTSA ↗

Explore the data

Vehicle analysis explorer

Inspect model-year patterns, reported mileage, monthly activity and the evidence behind each signal.

Data completeness

3 unique complaints in this selection. Analysis snapshot: 2026-10-01.

66.7%Usable mileage2 / 3 records

100.0%Valid incident date3 / 3 records

100.0%Valid filing date3 / 3 records

100.0%Ordered incident and filing dates3 / 3 records

Missing, zero and invalid mileage is excluded. Dates after the snapshot are excluded. Examples are limited selections, not a representative sample.

Problems by model year

Model-wide comparison of the eight most reported components across the model. Cells show counts and shares within each model year. Open a cell for source examples.

From model yearThrough model year

Component complaint heatmap
Component	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	2026	2027
Engine	1100.0% ODI 11093752 · 83,000 mi COOLING SYSTEM FAN DRIVE BELT TENSIONER DEVELOPS CRACKS THAT PROGRESS TO THE POINT OF CATASTROPHIC FAILURE WHERE HALF THE BRACKET END AND TWO HEAVY PULLEYS ARE EJECTED FROM THE VEHICLE BY THE FAST MOVING FAN BELT.. THIS HAS BEEN A KNOWN PROBLEM AND TIFFIN HAS REDESIGNED THE BRACKET AND IS REPAIRING THEM AS THEY FAIL. THERE HAVE BEEN NUMEROUS FAILURES AND POSTS ABOUT THEM POSTED IN THE ON-LINE RECREATIONAL VEHICLE FORUMS. AS A RESULT OF THESE POSTS, I ADDED A CHECK OF THIS BRACKET TO MY MAINTENANCE CHECKLIST. A MAJOR MAINTENANCE CYCLE WAS COMPLE… Look up ODI 11093752 at NHTSA ↗	1100.0% ODI 11349293 · 45,000 mi AT HIGHWAY SPEED, DASH LIT UP WITH WARNING LIGHTS, DASH SOUNDED ALARMS, MOBILE EYE FLASHED ERR..AND DASH DISPLAY FLASHED ABS COMM ERROR! 60 SECONDS LATTER THE ENGINE STOPPED (EVERYTHING DEAD)...BUT MOTOR COACH STILL MOVING WITH NO POWER STEERING! LUCKILY I WAS ABLE TO STOP THE COACH IN A BUSY EXIT LANE. AFTER 4 HOURS (POLICE STAYED WITH US THE ENTIRE TIME)...WAS ABLE TO RESET ECM ERROR CODE AND START THE ENGINE. AFTER CONTACTING TIFFIN, THEY ADVISED TO DISCONNECT MOBILE EYE UNDER DASH. SPENT 1 HOUR UNDER DASH (WHILE IN TRAFFIC) TRYING TO FIN… Look up ODI 11349293 at NHTSA ↗	150.0% ODI 11128294 · 15,672 mi THIS IS NOT A SINGLE ISOLATED INCIDENT. THERE HAVE BEEN A LARGE NUMBER OF OWNERS WITH THIS ISSUE AND THE MANUFACTURER HAS NOT PROVIDED AN ACCEPTABLE SOLUTION. *DT ON THE 2015-2018 TIFFIN ALLEGRO BUS ON THE POWER GLIDE CHASSIS, A CRITICAL DESIGN DEFECT EXISTS WITH THE ENGINE FAN DRIVE TENSIONER BRACKET AND TENSIONER PULLEY ASSEMBLY. THE FAN DRIVE IS DESIGNED TO ENGAGE AT A PRE-DETERMINED ENGINE COOLANT TEMPERATURE AND IS UTILIZED TO LOWER ENGINE TEMPERATURE AS THE ENGINE COOLANT TEMPERATURE REACHES A HIGH LEVEL. THE TENSIONER BRACKET IS CO… Look up ODI 11128294 at NHTSA ↗	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	150.0% ODI 11601168 Extreme engine heat into vehicle Look up ODI 11601168 at NHTSA ↗	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.
Fuel System, Diesel	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	1100.0% ODI 11435124 · 8,000 mi The contact owns a 2018 Tiffin Allegro Bus. The contact stated that while driving at various speeds, the vehicle would independently downshift as the Diesel Exhaust Fluid (DEF) warning light would illuminate. The manufacturer was notified of the failure and the contact was informed that they were aware of the failure; however, parts for the repair was unavailable. The vehicle had yet to be repaired. The failure mileage was approximately 8,000. Look up ODI 11435124 at NHTSA ↗	0Unavailable No examples available for this selection.	150.0% ODI 11458968 The contact owns a 2020 Tiffin Allegro Bus. The contact received a notification for NHTSA Campaign Number: 21E320000 (Fuel System, Diesel). The dealer had been notified about the recall and informed him that if the fuel rails were stable upon inspection of the vehicle, they could make needed reinforcements and return the vehicle; however, if the fuel rails needed replacement, the vehicle would have to remain in the dealer's possession until parts became available. The manufacturer had been notified of the recall. The contact stated that the man… Look up ODI 11458968 at NHTSA ↗	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.
Tires	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.
Unknown Or Other	00.0% No examples available for this selection.	00.0% No examples available for this selection.	150.0% ODI 11654266 No accident happened. I purchased a motorhome had two new tires steering tires 315 8022 five size tires when they hot driving is a tremendous shake to the front end and I’ve had it back to the tire company and nobody seems to want to do anything to help me? I think it’s a bad safety issue you could lose control of the motorhome. It’s 45 foot And the brand of the tire is. Yokohama I have filed a complaint with him. They have no one seems they won’t call me back. She told me to go to some dealer and I talked to the dealer and the dealer says no … Look up ODI 11654266 at NHTSA ↗	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.
Electronic Stability Control (Esc)	00.0% No examples available for this selection.	1100.0% ODI 11349293 · 45,000 mi AT HIGHWAY SPEED, DASH LIT UP WITH WARNING LIGHTS, DASH SOUNDED ALARMS, MOBILE EYE FLASHED ERR..AND DASH DISPLAY FLASHED ABS COMM ERROR! 60 SECONDS LATTER THE ENGINE STOPPED (EVERYTHING DEAD)...BUT MOTOR COACH STILL MOVING WITH NO POWER STEERING! LUCKILY I WAS ABLE TO STOP THE COACH IN A BUSY EXIT LANE. AFTER 4 HOURS (POLICE STAYED WITH US THE ENTIRE TIME)...WAS ABLE TO RESET ECM ERROR CODE AND START THE ENGINE. AFTER CONTACTING TIFFIN, THEY ADVISED TO DISCONNECT MOBILE EYE UNDER DASH. SPENT 1 HOUR UNDER DASH (WHILE IN TRAFFIC) TRYING TO FIN… Look up ODI 11349293 at NHTSA ↗	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.
Engine And Engine Cooling:Engine:Diesel	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.
Engine And Engine Cooling:Exhaust System:Emission Control	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.
Exterior Lighting	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.

Darker cells indicate a larger share of submitted complaints. Components overlap. This measures complaint composition, not failure probability.

Failure mileage by component

Median and middle 50% of usable owner-reported mileages. Ranges require at least five records.

Component failure mileage distribution
Component	Mileage range (25th–75th percentile)	Median	Usable records	Examples
Engine And Engine Cooling:Exhaust System:Emission Control	Too few reports for a range	9,000 mi	1 (sparse)	ODI 10165759 · 9,000 mi DT: THE CONTACT STATED WHEN THE MOTOR HOME WAS EXPOSED TO HOT WEATHER THERE WERE STRONG FUMES PRESENT BELIEVED TO BE FORMALDEHYDE. THE FUMES WERE VERY IRRITATING TO THE EYES OF ALL OCCUPANTS. THE CONTACT'S SPOUSE WAS HOSPITALIZED FOR FIVE DAYS DUE TO RESPIRATORY PROBLEMS, ASTHMA, PNEUMONIA AND A COLLAPSED LUNG. THE CONTACT EXPRESSED THAT THERE WERE OTHER SIMILAR COMPLAINTS ABOUT THIS WERE POSTED ON THE INTERNET. THE DEALERSHIP AND THE MANUFACTURER INFORMED THE CONTACT THAT THE SMELL WOULD GET BETTER AFTER THE VEHICLE GOT OLDER. AK Look up ODI 10165759 at NHTSA ↗
Power Train	Too few reports for a range	51,000 mi	1 (sparse)	ODI 10862987 · 51,000 mi NHTSA CAMPAIGN NUMBER: 07E033000 CUMMINGS ENGINE SERIAL NUMBER 46565687 ON 6/02/2015 THE WRIST PIN FAILED ON THIS ENGINE THAT FALL IN THE SERIAL NUMBER RANGE 46543077 TO 46603939. THE WRIST PIN FAILED WHILE DRIVING ON LA 1 ABOUT TO TURN ONTO I49 CAUSING CATASTROPHIC ENGINE FAILURE. THE ENGINE HAD TO BE REPLACED. CONTACTED TIFFIN ABOUT IT AND LOCAL CUMMINS DEALER AT TIME OF FAILURE. TIFFIN WAS UNAWARE OF RECALL AND LOCAL CUMMINS DEALER WOULD NOT WORK ON THE MOTOR HOME. HAD A LOCAL ENGINE COMPANY DO THE REPLACEMENT OF ENGINE AND THEY WERE … Look up ODI 10862987 at NHTSA ↗

Complaint and recall timeline

Explore monthly filing activity alongside recall announcements. Up to ten years of monthly history is available.

ComponentPeriod

Solid line: filed complaints. Dashed amber lines: recall announcement dates for this vehicle selection; markers include all recall components. The latest month is partial. Temporal proximity does not establish causation.

Monthly counts, recall campaigns and complaint examples

Monthly complaint and recall timeline
Month	Campaigns announced	Examples
2024-11	None	No examples available for this selection.
2024-12	None	No examples available for this selection.
2025-01	None	No examples available for this selection.
2025-02	None	No examples available for this selection.
2025-03	None	No examples available for this selection.
2025-04	None	No examples available for this selection.
2025-05	None	No examples available for this selection.
2025-06	None	No examples available for this selection.
2025-07	None	No examples available for this selection.
2025-08	None	No examples available for this selection.
2025-09	None	No examples available for this selection.
2025-10	None	No examples available for this selection.
2025-11	None	No examples available for this selection.
2025-12	None	No examples available for this selection.
2026-01	None	No examples available for this selection.
2026-02	None	No examples available for this selection.
2026-03	None	No examples available for this selection.
2026-04	None	No examples available for this selection.
2026-05	None	No examples available for this selection.
2026-06	None	No examples available for this selection.
2026-07	None	No examples available for this selection.
2026-08	None	No examples available for this selection.
2026-09	None	No examples available for this selection.
2026-10 (partial)	None	No examples available for this selection.

Emerging complaint spikes

Complete months in the latest six months with at least 10 complaints, at least twice the preceding 12-month average, and at least three square-root deviations above that average.

This is a descriptive screening rule, not a statistical defect finding. Publicity and reporting changes can increase submissions.

No complete months meet the spike thresholds for this selection.

Equal-age model-year comparison

Model-wide cumulative reports during the first three or five calendar years, starting with the model year (age 0). Only fully elapsed windows are compared.

Observation windowFirst model yearSecond model year

2022: 0 complaints · 2023: 2 complaints

Equal observation windows
Model year	Through age 0	Through age 1	Through age 2
2022	0	0	0
2023	0	2	2

Date coverage across each selected cohort

Date basis for all complaints in selected model years
Year	Incident dates used	Filing date fallbacks	Excluded dates
2022	0	0	0
2023	2	0	0

Incident date is preferred when valid and no later than filing; otherwise filing date is used. Model year approximates age. Equal observation time does not adjust for sales, distance driven or reporting delays. One complaint linked to multiple model years can appear in each cohort.

Components reported together

Each cell counts unique complaints naming both components. Open a nonzero cell for examples.

Component co-occurrence matrix
Component	Engine And Engine Cooling:Engine:Diesel	Engine And Engine Cooling:Exhaust System:Emission Control	Power Train
Engine And Engine Cooling:Engine:Diesel	—	0	0
Engine And Engine Cooling:Exhaust System:Emission Control	0	—	0
Power Train	0	0	—

Co-reporting does not establish that one component caused another concern.

Recurring narrative patterns

Specific keyword mentions beyond broad component labels. Matching includes negations and comparisons and does not confirm a diagnosis.

Search patterns

0 patterns with matching reports.

No narratives match the published patterns.