How many recall campaigns are listed for the 2020 Thor Motor Coach Aria?

4 campaign records are listed in this dataset for this make, model, and model year.

Does this page confirm that my vehicle is affected?

No. This model-level record is not a VIN lookup and does not determine vehicle eligibility or repair status. Check official NHTSA resources for the vehicle identification number.

Where do the campaign summaries come from?

The summaries and related details are shown from public NHTSA recall records. The local dataset was retrieved 2026-11-01.

Vehicle recall record

2020 Thor Motor Coach Aria

4 recall campaigns · 2020–2021 · 0 with a do-not-park-indoors warning

Campaigns: 4
First notice: 2020-03-20
Latest notice: 2021-07-08
Same-make model-year average: 4.9

Risk markers carried in the record

No park-it or park-outside warning is flagged in this vehicle's collected record. This does not establish that the vehicle is defect-free or that every notice is included.

The markers above summarize fields available in this dataset. A missing marker is not a safety finding. Recall status and remedy eligibility can depend on vehicle identification number, equipment, production date, and whether a repair has already been completed.

Recall distribution by component

4 component categories

Counts and shares use the vehicle-level recall records shown below. The horizontal bar is scaled to the largest category on this page.
Component	Campaigns	Share
SERVICE BRAKES, AIR	1	25.0%
EXTERIOR LIGHTING	1	25.0%
TIRES	1	25.0%
STRUCTURE	1	25.0%

Component labels follow the source record's component field. Where the source includes a more detailed subcomponent after a colon, this distribution groups the record under the first component segment. Shares are calculated against 4 campaigns and rounded to one decimal place, so displayed percentages may not sum to exactly 100 percent.

Recall dates by calendar year

2 calendar years

These are recall notice dates, not vehicle model years.
Calendar year	Campaigns	Relative volume
2020	3
2021	1

The timeline groups campaign records by their reported recall date. This explains why the date range (2020–2021) can begin before or end after model year 2020. The underlying vehicle may be covered by notices issued in several different calendar years.

Recall campaign details

4 vehicle-level records

Campaign summaries, consequences, and remedies are preserved from the collected NHTSA source text.
Campaign	Date	Component	Summary and source details	Flags
21V522000	2021-07-08	STRUCTURE	Thor Motor Coach (TMC) is recalling certain 2019 Challenger, Palazzo, Tuscany, 2019-2020 Miramar, 2019-2021 Aria, Outlaw, and Venetian recreational vehicles equipped with Hehr 6400 series windows. The adhesive… Read the complete source text Summary Thor Motor Coach (TMC) is recalling certain 2019 Challenger, Palazzo, Tuscany, 2019-2020 Miramar, 2019-2021 Aria, Outlaw, and Venetian recreational vehicles equipped with Hehr 6400 series windows. The adhesive that bonds the vented portion of the window may fail. Consequence Adhesive failure may cause the vent portion of the window to detach, increasing the risk of a crash or injury. Remedy Dealers will inspect the windows, and replace the vent if necessary, free of charge. Owner notification letters were mailed September 8, 2021. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000232.	No listed flag
20V559000	2020-09-15	TIRES:VALVE	Thor Motor Coach (TMC) is recalling certain 2018-2021 Aria, Palazzo, Tuscany, and Venetian motorhomes built on a Daimler Trucks (DTNA) chassis. The tire valve stem extension for the inner wheel may contact the… Read the complete source text Summary Thor Motor Coach (TMC) is recalling certain 2018-2021 Aria, Palazzo, Tuscany, and Venetian motorhomes built on a Daimler Trucks (DTNA) chassis. The tire valve stem extension for the inner wheel may contact the outer wheel rim opening and become damaged. Consequence Extensive damage to the valve stem extension may result in a loss of tire pressure of the inner wheel, increasing the risk of a crash. Remedy TMC will notify owners, and DTNA dealers will inspect the inner wheel valve stem stabilizers, and adjust as needed and/or replace the inner valve stem, free of charge. The recall began November 2, 2020. Owners may contact TMC customer service at 1-800-524-5210 extension 104 or DTNA customer service at 1-800-547-0712. TMC's number for this recall is RC000204. DTNA's number for this recall is FL-861.	No listed flag
20V418000	2020-07-20	EXTERIOR LIGHTING:BRAKE LIGHTS	Thor Motor Coach (TMC) is recalling certain 2017-2020 Aria, Venetian and Tuscany, 2017 Tuscany XTE and 2017-2019 Palazzo motorhomes vehicles that received an inspection-only remedy for recall 18V-763. The rear… Read the complete source text Summary Thor Motor Coach (TMC) is recalling certain 2017-2020 Aria, Venetian and Tuscany, 2017 Tuscany XTE and 2017-2019 Palazzo motorhomes vehicles that received an inspection-only remedy for recall 18V-763. The rear mounted Power Distribution Module (PDM) may have been damaged during manufacturing, possibly resulting in the rear marker lights, brake lights, or turn signals not functioning. Consequence Non-functioning exterior marker lights can increase the risk of a crash. Remedy TMC will notify owners, and Daimler Trucks dealers will replace the PDM, free of charge. Owner letters were mailed October 6, 2021. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000196.	No listed flag
20V167000	2020-03-20	SERVICE BRAKES, AIR:DISC:CALIPER	Thor Motor Coach (TMC) is recalling certain 2019-2020 Aria 3401, 3601, 3901, 3902, and Venetian G36, J40, L40, M37, R40, and S40 motorhomes built on DTNA chassis. The brake caliper mounting bolts may have been… Read the complete source text Summary Thor Motor Coach (TMC) is recalling certain 2019-2020 Aria 3401, 3601, 3901, 3902, and Venetian G36, J40, L40, M37, R40, and S40 motorhomes built on DTNA chassis. The brake caliper mounting bolts may have been insufficiently tightened. Consequence Loose brake caliper mounting bolts can reduce brake effectiveness, increasing the risk of a crash. Remedy DTNA will notify owners, and DTNA dealers will inspect and repair the vehicles, free of charge. The recall began on May 20, 2020. Owners may contact DTNA customer service at 1-800-547-0712 or TMC customer service at 1-877-855-2867.	No listed flag

Each row represents a campaign listed for this make, model, and model year. A campaign can also cover other vehicles. The excerpt above is a direct beginning of the source summary; expand a row to read the complete summary and any consequence or remedy text included in the local record.

How 2020 Thor Motor Coach Aria compares within Thor Motor Coach

8 listed 2020 model-year records

Other collected Thor Motor Coach records for model year 2020.
Vehicle	Campaigns	Date range
Thor Motor Coach Four Winds	9	2019-08-20–2020-11-17
Thor Motor Coach Freedom Elite	7	2019-08-20–2020-11-17
Thor Motor Coach Magnitude	6	2019-03-27–2022-02-18
Thor Motor Coach Omni	6	2019-03-27–2022-02-18
Thor Motor Coach Axis	4	2020-03-25–2021-06-10
Thor Motor Coach Miramar	2	2019-06-30–2021-07-08
Thor Motor Coach Challenger	1	2019-06-30–2019-06-30

This comparison is calculated from vehicle records for the same make and model year in this snapshot. It is a simple arithmetic average, not an industry benchmark. A model may appear under more than one configuration in the source data, and campaign counts do not indicate the probability that a specific vehicle has an unresolved defect.

Data source and interpretation

NHTSA Office of Defects Investigation, retrieved 2026-11-01. Recall records reflect manufacturer reports submitted to NHTSA. Absence of a recall here does not mean a vehicle is defect-free.

This page reports 4 campaign records, groups them into 4 component categories, and places the notice dates into these calendar years: 2020: 3; 2021: 1. These are derived views of the supplied records, not additional findings from NHTSA.

The collection includes model-year records with one or more recalls. It is not a complete vehicle history, VIN eligibility result, repair-status check, safety rating, or guarantee that the source has no later updates. Confirm current campaign details and vehicle applicability with official NHTSA information and the manufacturer.