2010 Ford Flex Engine Problems

NHTSA component category: ENGINE · data through 07/14/2026

30Engine complaints

21.6%Of all 139 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 engine ranks on this vehicle

STEERING31 · 22.3%

ENGINE30 · 21.6%

ELECTRICAL SYSTEM13 · 9.4%

POWER TRAIN12 · 8.6%

FUEL/PROPULSION SYSTEM12 · 8.6%

Share of the 139 complaints citing each category; one complaint can cite several. Full breakdown on the 2010 Ford Flex overview page.

What owners report

“THE CONTACT OWNS A 2010 FORD FLEX. THE CONTACT STATED WHILE STOPPED AT A STOP SIGN THE VEHICLE BECAME INOPERABLE. THE VEHICLE WAS TOWED TO…”NHTSA complaint 11309139 — filed 02/14/2020

“2010 FORD FLEX WITH DURATEC 3.5L ENGINE - SUDDEN WATER PUMP FAILURE CAUSES COOLANT TO FLOOD THE ENGINE, WHICH CAN CAUSE THE ENGINE TO OVERHEAT…”NHTSA complaint 11278748 — filed 11/07/2019

“WE HAVE REPLACED THE TURBOS IN OR FORD FLEX ECOBOOST 5 TIMES WITHIN 2.5 YEARS!! THE FRONT AND REAR TURBOS BOTH JUST WENT AGAIN WITHIN…”NHTSA complaint 11271087 — filed 10/25/2019

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

Engine complaints by year filed

Frequently asked questions

Does the 2010 Ford Flex have engine problems?

Engine is the #2 most-reported problem area on the 2010 Ford Flex: 30 of 139 complaints on file (21.6%). Complaints are unverified owner reports, not confirmed defects.

How many complaints does the 2010 Ford Flex have in total?

139 complaints were on file with NHTSA as of 07/14/2026. Across all categories, 9 involved a crash, 2 involved a fire, 4 reported injuries, and none reported deaths.

What does NHTSA's engine category include?

NHTSA assigns each complaint to standard component categories; this page reports the ENGINE 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 07/14/2026.