IllustrationISL 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
2006 Tiffin Allegro Bus
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all Allegro Bus years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 2 of 3 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Engine And Engine Cooling. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Power Train. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
0 crash reports0 fire reports1 injury reports
Engine And Engine Cooling complaints
2 reportsDT*: 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 E…
Read full complaint
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
Official recalls
409V069000 · Trailer Hitches
Feb 27, 2009
TIFFIN IS RECALLING 1,408 MY 2006-2009 ALLEGRO BUS, MY 2007-2009 PHAETON AND MY 2005-2009 ZEPHYR VEHICLES BUILT ON SPARTAN CHASSIS AND EQUIPPED WITH PUTMAN HITCHES. CERTAIN TRAILER HITCHES MAY FRACTURE WHICH COULD RESULT IN THE LOSS OF THE TRAILER.
Consequence & remedy
Consequence: SUSPECT HITCHES MAY DEVELOP FRACTURES AND SUBSEQUENT SEPARATION MAY OCCUR, RESULTING IN A VEHICLE CRASH, PROPERTY DAMAGE OR PEDESTRIAN HARM.
Remedy: TIFFIN IS WORKING WITH SPARTAN AND SPARTAN IS HANDLING THE REMEDY FOR THIS CAMPAIGN (PLEASE SEE 08V-567). THE TRAILER HITCH WILL BE REPLACED FREE OF CHARGE. OWNERS MAY CONTACT SPARTAN AT 1-517-543-6400 OR TIFFIN AT 256-356-8661.
08V509000 · Equipment:recreational Vehicle/trailer
Oct 7, 2008
TIFFIN IS RECALLING 3,507 MY 2004-2007 ALLEGRO, ALLEGRO BAY AND ALLERO BUS, MY 2004-2005 PHAETON AND MY 2005-2007 ZEPHYR MOTOR HOMES EQUIPPED WITH A TWO-DOOR REFRIGERATOR MANUFACTURED BY THE DOMETIC CORPORATION. THE REFRIGERATOR MAY HAVE A DEFECT IN THE BOILER TUBE. PRESSURIZED COOLANT SOLUTION COULD BE RELEASED INTO AN AREA WHERE AN IGNITION SOURCE (GAS FLAME) IS PRESENT.
Consequence & remedy
Consequence: RELEASE OF COOLANT UNDER CERTAIN CONDITIONS COULD IGNITE AND RESULT IN A FIRE.
Remedy: TIFFIN WILL BE WORKING WITH DOMETIC IN ORDER TO REPAIR THESE REFRIGERATORS (PLEASE SEE 08E032). DOMETIC WILL REPAIR THESE REFRIGERATORS BY INSTALLING A SECONDARY BURN HOUSING, A THERMAL FUSE, AND A MELT FUSE FREE OF CHARGE. DOMETIC HAS RETAINED STERICYCLE INC. TO MANAGE THIS CAMPAIGN. STERICYCLE WILL ASSIST THE OWNER IN LOCATING DEALERSHIPS OR SERVICE CENTERS AND WILL PROVIDE ASSISTANCE WITH SCHEDULING OF APPOINTMENTS. OWNERS MAY CONTACT DOMETIC/STERICYCLE AT 1-888-446-5157 OR TIFFIN AT 256-356-8661.
08V027000 · Steering:gear Box:shaft Pitman
Jan 25, 2008
CERTAIN MOTOR HOMES BUILT ON FREIGHTLINER CHASSIS AND EQUIPPED WITH ZF MODEL 8018 STEERING GEARS MAY HAVE BEEN ASSEMBLED WITH THE INCORRECT RECIRCULATING BALL SPACER. THIS COULD POTENTIALLY ALLOW THE RECIRCULATING BALLS TO ESCAPE FROM THE RECIRCULATING BALL CIRCUIT RESULTING IN A LOSS OF STEERING.
Consequence & remedy
Consequence: THE OPERATOR MAY NOTICE HIGHER REQUIRED STEERING WHEEL INPUTS, OR THE NEED FOR MORE STEERING WHEEL ADJUSTMENTS WHILE DRIVING IN A STRAIGHT LINE IN COMBINATION WITH METALLIC CRACKING NOISES PRIOR TO A LOSS OF STEERING. LOSS OF STEERING COULD RESULT IN A VEHICLE CRASH.
Remedy: TIFFIN IS WORKING WITH FREIGHTLINER TO REPLACE THE STEERING GEAR FREE OF CHARGE (PLEASE SEE 07V343 AND 07E049). OWNERS MAY CONTACT FREIGHTLINER AT 1-800-547-0712 OR TIFFIN AT 256-356-8661.
05V307000 · Electrical System
Jul 5, 2005
ON CERTAIN MOTOR HOMES CONTAINING A 50 AMP TRANSFER SWITCH BUILT BY INTELLITEC, THE MATERIAL USED FOR THE WIRE LUGS WAS CHANGED FROM NICKEL PLATED TO COPPER LUGS. THE COPPER LUGS ARE SOFTER THAN THE NICKEL PLATED AND DO NOT RETAIN THE TORQUE OF THE SCREW THAT CLAMPS THE WIRE CONNECTOR.
Consequence & remedy
Consequence: WHEN THE TORQUE IS RELAXED, THE LUGS CAN BECOME LOOSE RESULTING IN EXCESSIVE HEAT WITHIN THE CONNECTED WIRE THAT COULD RESULT IN A FIRE.
Remedy: DEALERS WILL REPLACE THE CHANGEOVER BOX. THE RECALL BEGAN ON JULY 21, 2005. OWNERS MAY CONTACT TIFFIN AT 1-256-356-8661.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0No exact-year investigations in this snapshot.