The Used Car Index

2018 Thor Motor Coach ACE problems

NHTSA lists 5 complaints for the 2018 Thor Motor Coach ACE, 0 of them mention a crash and 0 mention a fire. 0 complaints mention an injury, with 0 injuries and 0 deaths reported.

Data build 2026-10-09.

NHTSA lists this vehicle as THOR MOTOR COACH ACE.

At a glance

Complaints
5
With crash
0
With fire
0
With injury (complaints)
0
Injuries
0
Deaths
0
Recalls
3
Do not drive recalls
0
Park outside recalls
0
Recall potential units (maximum)
110,400
Investigations
0
Open investigations
0
Manufacturer communications
2

Complaints per 100k sold unavailable. No sales source is available for this record.

Where the complaints are

Top systems
SystemComplaintsShare of this vehicle's complaints
ELECTRICAL SYSTEM120.0%
ENGINE120.0%
POWER TRAIN120.0%
STEERING120.0%
SUSPENSION120.0%
VISIBILITY/WIPER120.0%
Top subsystems
SystemSubsystemComplaints
POWER TRAINAUTOMATIC TRANSMISSION1
SUSPENSIONFRONT1

One complaint can name several systems, so shares can add to more than 100 percent.

Model-generated complaint tags

These labels are model-generated, not NHTSA data.

Failure modes
LabelCountShare of taggedMean confidence
mechanical failure240.0%0.52
electrical electronic120.0%0.87
loss of control120.0%0.64
visibility or lighting120.0%0.99
Severities
LabelCountShare of taggedMean confidence
low360.0%0.58
high120.0%0.59
moderate120.0%0.95

Model: typesafe/jev-1.13-20260917; schema version: tag-v1. 5 tagged complaints of 5 complaints (100.0%).

Confidence is the model's own probability for the label it chose (0 to 1), not accuracy.

Model-generated labels on tagged complaints only. Model years 2013 and newer are tagged in full; 2012 in part (see tagged_share); earlier model years have no tags. NHTSA's own flags remain separate in the complaints block.

Recalls

See new recalls and investigations this week.

3 recalls.

18V498000

Date: 2018-07-30. Systems: EQUIPMENT.

Defect: Thor Motor Coach (TMC) is recalling certain 2018 Thor Ace 27.2 recreational vehicles. The rubber liquid propane (LP) hose may sag and contact the tire in the wheel well.

Consequence: Contact with the tire may cause the LP hose to leak, increasing the risk of a fire.

Remedy: TMC will notify owners, and dealers will inspect the rubber LP hose and replace it as necessary. Dealers will install additional p-clamps or relocate the existing p-clamps to properly secure the hose, free of charge. The recall began on August 22, 2018. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000158.

Do not drive: No. Park outside: No.

17V758000

Date: 2017-11-22. Systems: EQUIPMENT.

Defect: Thor Motor Coach (Thor) is recalling various 2003-2018 recreational vehicles, equipped with Kidde Plastic-Handle or Push Button 'Pindicator' Fire Extinguishers. See a list of the affected trailer models at: https://static.nhtsa.gov/odi/rcl/2017/RMISC-17V758-5764.pdf. These extinguishers may become clogged, preventing the extinguisher from discharging as expected or excessive force may be needed (excerpt)

Consequence: In the event of a fire, if the fire extinguisher does not function properly, it can increase the risk of injury. (excerpt)

Remedy: Thor will notify owners, instructing them to contact Kidde for a replacement fire extinguisher, free of charge. The recall began on January 15, 2018. Owners may contact Thor customer service at 1-877-500-1020, or Kidde customer service toll-free at 1-855-262-3540, or online at www.kidde.com and click on "Product Safety Recall" for more information. (excerpt)

Do not drive: No. Park outside: No.

17V692000

Date: 2017-11-02. Systems: EXTERIOR LIGHTING.

Defect: Thor Motor Coach (TMC) is recalling certain 2018 Ace, Axis, Hurricane, Windsport, and Vegas motorhomes. The wiring for the trailer lights may have been inserted into the wrong locations of the trailer lighting socket causing the trailer lights to not function properly. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 108, "Lamps (excerpt)

Consequence: If the trailer lights do not function as intended, it can increase the risk of a crash. (excerpt)

Remedy: Thor has notified owners and dealers will re-wire a new connector, free of charge. The recall began on November 21, 2017. Owners may contact TMC customer service at 1-877-500-1020. TMC's number for this recall is RC000148. (excerpt)

Do not drive: No. Park outside: No.

Investigations

0 investigations; 0 open.

Manufacturer communications

2 manufacturer communications.

Communications by system
SystemCount
EQUIPMENT2

10169044

Date: 2019-12-05. Type: Service Bulletin/Repair Instructions. Systems: EQUIPMENT.

This letter stated that there were no Service Bulletins or Technical Service Bulletins issued for the month of November, 2019.

10124236

Date: 2017-11-03. Type: Service Bulletin/Repair Instructions. Systems: EQUIPMENT.

This letter stated that there was one (1) Service Notification issued for the month of October, 2017.

Notes on this record

  • Complaints from the API and bulk file are merged and deduplicated by ODI number; the API alone misses records.
  • System and subsystem counts are numbers of distinct complaints, recalls or communications that name them. One record can name several systems, so shares across systems can add to more than 100 percent; a single share never exceeds 100 percent.
  • Recalls are counted once per campaign, investigations once per action and manufacturer communications once per NHTSA id, even when NHTSA lists several model names for the same record.
  • A sales denominator is a calendar-year proxy, not the population of vehicles still in use. Rates are copied from verified pipeline output.

Other names NHTSA uses

None listed.

Matched NHTSA models

Matched labels and complaints
NHTSA model labelComplaints
ACE5

Same model, other years

All model years | All Thor Motor Coach models

Other Thor Motor Coach models, 2018

Sources

Get this record as JSON

The free rate-limited demo needs no key.

curl "https://api.theusedcarindex.com/v1/demo/vehicle_risk?make=Thor+Motor+Coach&model=ACE&year=2018"

Paid endpoint: https://api.theusedcarindex.com/v1/vehicle_risk. MCP endpoint: https://api.theusedcarindex.com/mcp.