ELECTRICAL SYSTEM
2018 Tiffin Allegro
Recalls, owner-reported complaints, investigations and safety data
Data refreshed
Overview
Our database contains 4 NHTSA owner-reported complaints for the 2018 Tiffin Allegro, most frequently naming the brakes, body & structure and engine categories. 3 safety recalls have been issued covering this model year; and 3 manufacturer communications are on file.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Complaint activity over time
When owners filed reports about this model year
View as table
| Month | Complaints filed | Cumulative |
|---|---|---|
| Apr 2018 | 1 | 1 |
| Oct 2018 | 1 | 2 |
| Dec 2020 | 1 | 3 |
| Jul 2021 | 1 | 4 |
What owners report
Complaints grouped by the component NHTSA recorded
- Brakes240.0%
- Body & structure120.0%
- Engine120.0%
- Powertrain (other)120.0%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Safety recalls
3 campaigns cover this model year
Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.
Check a VIN on NHTSA.govSEAT BELTS:REAR/OTHER:ANCHORAGE
EQUIPMENT
Recent owner complaints
Reports submitted to NHTSA, shown in the owner's own words
RV Diesel Exhaust Fuel (DEF Head) Sensor failure. These failure rendered our RV drivability limited and us stranded at Cummins dealerships, once in 2019 and again in 2020. We have been full time RV'ers and rely on motorhome getting us from place to place. We were lucky to not have the engine derate while driving, but had to pull over on the freeway, there were no off ramps or rest stops for miles as multiple warning lights and codes flashed on the dash so we could call Tiffin to ask for help, what to do and where to go. We where able to get to a Cummins dealer to have it fixed. We were warned to drive slow and straight to the Cummins dealership before the engine derated. RV Diesel Exhaust Fuel Sensor failures have been occurring & re-occurring at an astronomical rate across the country, we firmly believe that RV's should be exempt from requiring DEF / DEF Sensors, period. Please do not wait until there is a FATALITY, OR POSSIBLE GREATER FATALITIES before making this change retroactive for all RV's nationally. The Cummins dealerships and Tiffin have the repair records. The error codes we received was SPM 3521 FMI 11 error code. Looking it up it is "After treatment 1 Diesel Exhaust Fluid Property". Also SPN 3364-9, ECM 1761-9, ECM 3031-9, SPN 3364-9 and ECM 3031-9 showed up.
- NHTSA ID
- 11426798
- Incident
- Apr 1, 2019
WHEEL SPEED SENSORS WENT OUT,AND WENT INTO LIMP MOOD,TRANSMISSION WOULD NOT, SHIFT,LIGHTS CAME ON DASH,ABS,CHECK ENGINE LIGHT,AND MOORE. THIS WAS ON A INTERSTATE,GOOD WAY TO GET RUN OVER. WE ARE IN A REV CLUB THERE IS A LOT OF THIS GOING ON.
- NHTSA ID
- 11385121
- Incident
- Dec 7, 2020
- Mileage
- 9,569 mi
ENTRY DOOR LATCH ON OUR TIFFIN 2018 ALLEGRO BUS UNLATCHED AS WE WERE IN MOTION ON A HIGHWAY
- NHTSA ID
- 11141679
- Incident
- Oct 9, 2018
- Mileage
- 4,488 mi
TL* THE CONTACT OWNS A 2018 TIFFIN ALLEGRO HITCHED TO A FREIGHTLINER CHASSIS. THE CONTACT STATED THAT WHILE DRIVING DOWN AN INCLINE, THE EXHAUST BRAKE SYSTEM ACTIVATED CAUSING THE BRAKE LIGHTS TO THE FREIGHTLINER CHASSIS TO ACTIVATE. AS A RESULT, THE BRAKE LIGHTS REMAINED ACTIVATE ON THE RV AS WELL AND THE CONTACT WAS CONCERNED THAT THAT THEY WOULD OVERHEAT DURING THE SIXTEEN MILE DOWNHILL DRIVE. THE CONTACT MENTIONED THAT ONLY THE TOWED VEHICLES BRAKE LIGHTS SHOULD ILLUMINATE AND THAT THE BRAKES SHOULD ONLY ACTIVATE WHEN THE BRAKE PEDAL WAS DEPRESSED. THE VEHICLE WAS TAKEN TO FREIGHTLINER DEALER: M & M COACH AT 5787 MCCULLY ST, CHINO, CA 91710 WHERE THEY ATTEMPTED TO TURN OFF THE BRAKES LIGHTS BUT FAILED. THE FREIGHTLINER MANUFACTURER WAS NOTIFIED OF THE FAILURE WHERE THEY INFORMED THE CONTACT THAT THE MULTIPLEX SYSTEM WAS PROGRAMMED WHERE THE BRAKE LIGHTS REMAIN ILLUMINATED WHEN THE EXHAUST BRAKE SYSTEM WAS ACTIVATED. THE APPROXIMATE FAILURE MILEAGE WAS 6,400. NO FURTHER INFORMATION WAS AVAILABLE FOR THE FREIGHTLINER CHASSIS.
- NHTSA ID
- 11083613
- Incident
- Mar 19, 2018
- Mileage
- 6,400 mi
Manufacturer communications
A bulletin sent by a manufacturer to its dealers. Not a recall, and repairs are not necessarily free.
EXTERIOR LIGHTING
Stopped using the lights we had been using due to expense. Replaced with these, but these new lights have to be wired in instead of just clicking in. These are the instructions to wire in.
EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
This was a letter to our dealers we sent out when we first heard of the Kidde fire extinguisher recall, even though it was still unofficial. We knew our coaches on the dealers' lots contained Kidde and could not be sold unreplaced.
ELECTRICAL SYSTEM; EQUIPMENT:APPLIANCE:AIR CONDITIONER
Possibility that the wires connecting the air conditioners to the 120 volt AC load center were not properly installed. If this wiring is not corrected there could be some nuisance tripping of the generator circuit breakers.
Manufacturers file copies of the bulletins they send to dealers with NHTSA. These often describe diagnostic or repair procedures for a known condition. They are not recalls: repairs described in a bulletin are usually only free if the vehicle is still under warranty or the manufacturer has extended coverage.
Compare model years
Complaint and recall counts across every year of this model
| Year | Complaints | Recalls | Investigations | Issue Index |
|---|---|---|---|---|
| 2025 | 0 | 0 | 0 | — |
| 2024 | 2 | 0 | 0 | — |
| 2023 | 5 | 2 | 0 | — |
| 2022 | 3 | 5 | 0 | — |
| 2021 | 5 | 5 | 0 | — |
| 2020 | 1 | 2 | 0 | — |
| 2019 | 2 | 2 | 0 | — |
| 2018Viewing | 4 | 3 | 0 | — |
| 2017 | 3 | 3 | 0 | — |
| 2016 | 5 | 3 | 0 | — |
| 2015 | 0 | 5 | 0 | — |
| 2014 | 2 | 5 | 0 | — |
| 2013 | 4 | 4 | 0 | — |
| 2012 | 4 | 3 | 0 | — |
| 2011 | 6 | 8 | 0 | — |
| 2010 | 3 | 10 | 0 | — |
| 2009 | 0 | 7 | 0 | — |
| 2008 | 2 | 7 | 0 | — |
| 2007 | 2 | 8 | 0 | — |
| 2006 | 2 | 6 | 0 | — |
| 2005 | 2 | 7 | 0 | — |
| 2004 | 1 | 8 | 0 | — |
| 2003 | 11 | 7 | 0 | — |
| 2002 | 10 | 5 | 0 | — |
| 2001 | 10 | 6 | 0 | — |
| 2000 | 10 | 5 | 0 | — |
| 1999 | 4 | 4 | 0 | — |
| 1998 | 4 | 3 | 0 | — |
| 1997 | 3 | 2 | 0 | — |
| 1996 | 2 | 0 | 0 | — |
| 1995 | 4 | 0 | 0 | — |
| 1994 | 3 | 0 | 0 | — |
| 1993 | 2 | 0 | 0 | — |
| 1992 | 1 | 0 | 0 | — |
| 1991 | 1 | 0 | 0 | — |
| 1990 | 1 | 0 | 0 | — |
| 1988 | 1 | 0 | 0 | — |
| 1986 | 1 | 0 | 1 | — |
| 1985 | 1 | 0 | 0 | — |
| 1984 | 1 | 0 | 0 | — |
| 1983 | 1 | 0 | 0 | — |
| 1980 | 0 | 1 | 0 | — |
| 1979 | 0 | 1 | 0 | — |
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers. Older model years have had longer for reports to accumulate.