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1991 Ford Aerostar Power Train:automatic Transmission Problems

NHTSA component category: POWER TRAIN:AUTOMATIC TRANSMISSION · data through 07/12/2026

21Power Train:automatic Transmission complaints
9.4%Of all 223 complaints
#2Most-reported category

Source: U.S. NHTSA complaint data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.

How power train:automatic transmission ranks on this vehicle

POWER TRAIN:AUTOMATIC TRANSMISSION21 · 9.4%
POWER TRAIN:AUTOMATIC TRANSMISSION:PARK/NEUTRAL START INTERLOCK SWITCH18 · 8.1%
VEHICLE SPEED CONTROL18 · 8.1%
ELECTRICAL SYSTEM:WIRING:FRONT UNDERHOOD12 · 5.4%

Share of the 223 complaints citing each category; one complaint can cite several. Full breakdown on the 1991 Ford Aerostar overview page.

What owners report

“THE SNAP RINGS IN THE AUTOMATIC TRANSMISSION BROKE, CAUSING THE PARTS IN THE TRANSMISSION TO BREAK AND MAY CAUSE AN UNEXPECTED LOSS OF VEHICLE CONTROL…”NHTSA complaint 834135 — filed 01/28/1999
“WHILE DRIVING THE TRANSFER CASE AND TRANSMISSION VIBRATE AND BECOME DETACHED AT HIGHWAY SPEEDS. THE MANUFACTURER HAS BEEN NOTIFIED.”NHTSA complaint 826866 — filed 08/18/1998
“THE CONSUMER IS STILL HAVING PROBLEMS WITH TRANSMISSION, EVEN AFTER RECALL REPAIRS WERE DONE. CONSUMER STATES THAT WHEN THE IGNITION IS IN THE LOCK POSITION…”NHTSA complaint 805287 — filed 11/19/1996

Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.

Power Train:automatic Transmission complaints by year filed

6199541996119972199831999320001200112004

Frequently asked questions

Does the 1991 Ford Aerostar have power train:automatic transmission problems?

Power Train:automatic Transmission is the #2 most-reported problem area on the 1991 Ford Aerostar: 21 of 223 complaints on file (9.4%). Complaints are unverified owner reports, not confirmed defects.

How many complaints does the 1991 Ford Aerostar have in total?

223 complaints were on file with NHTSA as of 07/12/2026. Across all categories, 23 involved a crash, 69 involved a fire, 25 reported injuries, and 1 reported deaths.

What does NHTSA's power train:automatic transmission category include?

NHTSA assigns each complaint to standard component categories; this page reports the POWER TRAIN:AUTOMATIC TRANSMISSION category exactly as NHTSA defines and records it.

About this data — Complaint figures on this page are consumer reports submitted to the National Highway Traffic Safety Administration (NHTSA), a U.S. government agency. NHTSA does not verify individual complaints; a complaint is not proof that a defect exists, and counts reflect what owners chose to report, not confirmed failure rates. Recall information comes from official NHTSA safety recall campaigns; recall repairs are free at authorized dealers. Always check your specific vehicle by VIN at nhtsa.gov/recalls. CarModelProblems.com is an independent site and is not affiliated with NHTSA or any vehicle manufacturer. Data through 07/12/2026.