2021 Thor Motor Coach Magnitude Problems, Complaints & Recalls

Source: NHTSA · Updated Sep 23, 2025 · 3 owner complaints analyzed

Compared with other Magnitude years
Not enough data 2nd of 7 for complaints
Safety recalls
None on file
NHTSA crash rating
Not rated

Owners have filed 3 complaints with NHTSA about the 2021 Thor Motor Coach Magnitude. That ranks 2nd out of 7 Magnitude model years for complaints. The most reported problem area is electrical system (2 complaints, 67%). There are no safety recalls on file for this model year.

Complaints are unverified owner reports and are not adjusted for sales volume.

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Most common 2021 Thor Motor Coach Magnitude problems

Complaints grouped by the part of the car owners reported, with the median mileage when the problem happened.

Electrical System2
Power Train1 · ~6,671 mi
Structure1
Unknown or Other1
Problem areaComplaintsShareMedian milesOwners mention mostTypical repair cost
Electrical System267%———
Power Train133%6,671——
Structure133%———
Unknown or Other133%———

One complaint can list several problem areas, so shares can add up to more than 100%.

Complaints by year received

Peak: 2020, with 1 complaints
2020: 1202012023: 1202312025: 120251

n = 3 complaints · Source: NHTSA

2021 Thor Motor Coach Magnitude recalls (0)

No safety recalls are on file for the 2021 Thor Motor Coach Magnitude.

To see whether a specific car still has an open recall, enter its VIN on NHTSA's official recall lookup. You can also decode a VIN here.

Recent owner reports

Short excerpts of the latest complaints filed with NHTSA, with personal details removed. Full reports can be searched on NHTSA.gov.

Rear house battery tray weld failed, tray fell and hit the ground, damaging BIM, various cables etc. Identical to Recall 19V-566 (2019–2020) but not included for 2021.

Safety concern: Batteries may detach on roadway, cause shorts/fire, or total power loss.


Electrical System · received Sep 23, 2025 · NHTSA complaint 11689266

A wiring harness was found pinched, pins bent and broken, apparently in the process of mating the motorhome body to the cassis cab. This cable has power in it and could result in a vehicle fire. Thor has been completely unresponsive in assisting me, despite acknowledging it’s out of warranty, and…

Electrical System · received Jun 15, 2023 · NHTSA complaint 11527258

TL* THE CONTACT OWNS A 2021 THOR MAGNITUDE BB35 BUILT ON A 2020 FORD F-550 CHASSIS N/A. THE CONTACT STATED WHILE STATIONARY AT A TRAFFIC LIGHT, WHILE THE DEPRESSING THE ACCELERATOR PEDAL, THE RV MADE AN ABNORMAL NOISE AND STARTED TO ROLL BACKWARDS. THE CONTACT STATED NO WARNING LIGHT WAS…

Power Train · received Dec 18, 2020 · NHTSA complaint 11384080

Other Thor Motor Coach Magnitude years

← 2020 Magnitude · 2022 Magnitude →

See all Thor Motor Coach Magnitude problems by year, every Thor Motor Coach model, or the VIN decoder.

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Frequently asked questions

What are the most common problems with the 2021 Thor Motor Coach Magnitude?

Owners most often report electrical system, power train, structure problems. The top one, electrical system, accounts for 2 complaints.

Was there a recall on the 2021 Thor Motor Coach Magnitude?

No safety recalls are on file for this model year.

Was the 2021 Thor Motor Coach Magnitude a good year?

Complaint data can't fully answer that, because counts aren't adjusted for sales. Compared with other Magnitude model years, the 2021 has too little data to compare. Always get a pre-purchase inspection and check the VIN for open recalls.