Complaints over time
Complaints about the 2020 Tiffin BUS peaked in 2021, with 1 filed
Owner complaints about this model year, by the year they were filed with NHTSA.
Source: NHTSA ODI complaints file. The lighter column runs through October.
Model year
2020 Tiffin BUS
Other, diesel, built in United States. Owner complaints on file from Aug 10, 2021 to Aug 10, 2021.
Recall campaigns covering this model year33,849 vehicles or units across those campaigns
Owner complaints1Below the median 2020 other
Severity index0.02020 others average 6.4
First 24 months1Complaints in its first two years
Components
100% of complaints about the 2020 Tiffin BUS name engine and cooling
Owner complaints by component. Hover or focus a bar for the crash, fire, injury or death count.
Source: NHTSA ODI complaints file. A complaint can name more than one component; it is counted under the first.
Recalls
3 recall campaigns cover the 2020 Tiffin BUS
Check a specific vehicle by VIN on NHTSA's site: a campaign may cover only part of a model year's production.
| Campaign | Filed | Subject | Component | Vehicles | Remedy |
|---|---|---|---|---|---|
| 21V-306 | Apr 30, 2021 | Sealing washer may not seat correctly in the pilot bore, allowing the high pressure fuel rail assembly to leak | Fuel system | 3,198 | Part replacement |
| 20V-534 | Sep 2, 2020 | Steering pinch bolts may not have been properly tightened | Steering | 8 | Repair or modification |
| 20V-433 | Jul 28, 2020 | Windshield wipers may not work due to the control module being improperly wired | Visibility and wipers | 643 | Inspection |
Source: NHTSA ODI recalls file.
Owner complaints
What owners reported about the 2020 Tiffin BUS
The full text of every complaint filed with NHTSA about this model year, newest first. Complaints are filed by owners and are not verified by NHTSA; NHTSA removes personal details before publishing.
1 complaint on file, page 1 of 1.
- Filed Aug 10, 2021Failure Aug 10, 2021Milton, FLEngine
DEF "Head" sensor failure resulting in power reduction to 5%. Due to faulty def head sensors the vehicle will experience power loss dropping to 5% load. These sensors do nothing but measure DEF fluid level and temperature in it's tank. DEF continues to be supplied to the exhaust meeting all EPA regulations in place at this time, BUT the Engine ECU will shut you down leaving you stranded. Problems with micro chip shortages have left many stranded with nothing in place to help them get "home".. We are talking weeks to Months in some cases only to have the def head finally replaced only to fail again with in a couple thousand miles. Emissions are not effected, but "Shaw Development" (DEF Head manufacturer ) Nor Cummins (engine manufacturer) has not done anything to prompt the EPA to allow a work around for this problem. Emergency Response vehicles do have programing in their ECU which allow them to operate normally until new parts are available. Why not for the thousands of Motor Home owners as well as over the road trucks which are effected as well. It's not a question of if this will happen, it's a question of when this will happen.
NHTSA complaint 11428586
Source: NHTSA ODI complaints file.
Investigations
NHTSA has not opened an investigation on this model year
Source: NHTSA ODI investigations file.
Service bulletins
2 manufacturer communications cover this model year
Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall.
- MCD-009 Jun 9, 2025 · Other
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. - TIFF 12-2019 Jan 15, 2020 · Service Bulletin/Repair Instructions
There is the possibility the water filter housing is installed incorrectly. If a motorhome has the water filter housing installed incorrectly, there is the possibility of excess air in the water lines.
Source: NHTSA manufacturer communications files.