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#BS-2021-THOFOU-23FA

2021 Thor Motor Coach Four Winds

Based on reports from 4 owners and 9 recalls for this exact model.

Complaints
4
Crashes
0
Fires
0
Recalls
9
TSBs
7

Preliminary Verdict

Green Light

Based on 4 complaints, 0 crashes, 0 fires, and 9 recalls.

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Mechanic Inspection Checklist

!Check the Speed ControlHIGH

1 owners reported speed control issues.

!Inspect the SteeringMED
Look for symptoms of wear and premature failure
+ 3 more items in full checklistUnlock

30,000-Mile Cost Projection

Best Case

$X,XXX

Most Likely

$X,XXX

Worst Case

$X,XXX

Top cost driver: Speed Control (1 reports).

Includes fuel costs, common repairs, and recall riskUnlock

Also in your report

Owner Intelligence

AI-synthesized themes from real complaints

Buyer Lot Checklist

Questions, test drive checks, walk-away triggers

Negotiation Talking Points

Data-backed dollar deductions

Buy / Skip Verdict

Final recommendation with conditions

10 sections total in the full reportUnlock all

Where the complaints fall

Speed Control1 (25%)
Steering1 (25%)
Structure:body1 (25%)
Equipment:recreational Vehicle/trailer1 (25%)

2021 Thor Motor Coach Four Winds: Known Issues & Problem Areas

Speed Control Issues

Speed Control complaints account for 25% of all reports filed for the 2021 Thor Motor Coach Four Winds, with 1 owners filing complaints with NHTSA.

Steering Issues

Steering complaints account for 25% of all reports filed for the 2021 Thor Motor Coach Four Winds, with 1 owners filing complaints with NHTSA. Owners should pay attention to steering-related symptoms during test drives and pre-purchase inspections.

Structure:body Issues

Structure:body complaints account for 25% of all reports filed for the 2021 Thor Motor Coach Four Winds, with 1 owners filing complaints with NHTSA. Owners should pay attention to structure:body-related symptoms during test drives and pre-purchase inspections.

Equipment:recreational Vehicle/trailer Issues

Equipment:recreational Vehicle/trailer complaints account for 25% of all reports filed for the 2021 Thor Motor Coach Four Winds, with 1 owners filing complaints with NHTSA. Owners should pay attention to equipment:recreational vehicle/trailer-related symptoms during test drives and pre-purchase inspections.

Data sourced from NHTSA owner complaints and community reports. The full report analyzes severity, repair costs, and failure patterns for each category.

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Repair costs • Negotiation scripts • Mechanic checklist • Buy/skip verdict

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Recall History (9 recalls)

20V178000Mar 2020

POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT

Thor Motor Coach (TMC) is recalling certain 2020 Chateau 31W and 31WV, Quantum KW29 and LF31, Vegas 24.1 and Axis 24.1 motorhomes and 2020-2021 Four Winds 24F, 28Z, and 31E motorhomes built on a Ford chassis. The rear axle differential may have an insufficient amount of fluid, possibly resulting in a failure of the rear axle assembly and a driveshaft separation.

20V303000Jun 2020

ELECTRONIC STABILITY CONTROL (ESC)

Thor Motor Coach (TMC) is recalling certain 2020-2021 Quantum, Chateau and Four Winds, and 2020 Vegas and Axis motorhomes built on a Ford E-series chassis. A wire harness in the rear of the vehicle may contact the vehicle frame, resulting in damage to the circuits that support the fuel pump and the anti-lock braking system (ABS).

20V339000Jul 2020

VISIBILITY:GLASS, SIDE/REAR

Thor Motor Coach (TMC) is recalling certain 2020-2021 ACE, 2021 Four Winds and 2020 Gemini, Axis, Compass, Delano, Windsport, Hurricane, Outlaw, and Vegas motorhomes. The adhesive bond between the glass and the metal hinge frame of the frameless windows may fail which would then allow the glass to detach and fall out.

20V419000Sep 2020

ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES

Thor Motor Coach (TMC) is recalling certain 2021 Daybreak, Four Winds, Quantum, Chateau, and Freedom Elite motorhomes built on the 2020 Ford E-Series chassis. The battery cable may not have been properly secured within the chassis rail, which can cause it to contact the exhaust manifold and heat shield.

20V423000Sep 2020

ELECTRICAL SYSTEM:WIRING

Thor Motor Coach (TMC) is recalling certain 2019-2021 Freedom Elite, and 2021 Four Winds motorhomes. A 100amp converter breaker was incorrectly installed at the battery tray when a 70amp breaker is required, possibly resulting in the wiring connected to the breaker overheating.

+ 4 more recalls in the full report

Recall severity analysis & seller scripts

The full report rates each recall's severity and gives you scripts for asking the seller about recall completion.

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About this data

NHTSA Complaints

Federal database of owner-filed safety complaints. 4 records for this vehicle.

NHTSA Recalls

Manufacturer-issued safety recalls. 9 recalls found for this vehicle.

Repair Cost Data

Real-world repair costs from owner reports and independent databases.

2021 Thor Motor Coach Four Winds: Frequently Asked Questions

What is the most common problem with the 2021 Thor Motor Coach Four Winds?
The most commonly reported issue with the 2021 Thor Motor Coach Four Winds is related to the speed control, with 1 complaints filed with NHTSA.
Is the 2021 Thor Motor Coach Four Winds reliable?
The 2021 Thor Motor Coach Four Winds has 4 complaints, 0 crash reports, and 0 fire reports filed with NHTSA. The full report analyzes whether these numbers indicate real risk or are proportional to the vehicle’s popularity.
How much does it cost to fix 2021 Thor Motor Coach Four Winds problems?
Repair costs vary by issue. The full BumperScan report includes detailed repair cost estimates (low/median/high) for every major issue, plus a 30,000-mile total cost of ownership projection.
Does the 2021 Thor Motor Coach Four Winds have any recalls?
Yes, the 2021 Thor Motor Coach Four Winds has 9 recalls on record. The full report includes recall severity analysis and scripts for asking the seller about recall completion.
What mileage do Thor Motor Coach Four Winds problems start?
Mileage data is limited for this vehicle. The full report analyzes available data to identify failure patterns by mileage range.
What’s in the full report?
10 sections of AI analysis: severity-ranked issues, component scores (0-100), 30K-mile cost projection, failure timeline by mileage, recall details with seller scripts, owner sentiment analysis, mechanic checklist, buyer lot checklist, negotiation ammo with dollar figures, and a buy/skip verdict.
How is this different from free NHTSA data?
NHTSA gives you raw complaint text. BumperScan cross-references 2.1M+ complaints with community repair cost data, EPA fuel data, and recall records — then uses AI to synthesize it into actionable advice with dollar figures.
How is this different from Carfax?
Carfax is VIN-specific history ($45/report). BumperScan is model-level reliability intelligence — what problems this car is known for, what they cost, and whether you should buy it. Complementary, not competing.
What if the report isn’t useful?
100% money-back guarantee. If the report doesn’t help you make a more informed decision, we’ll refund you — no questions asked.
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