2019 Ford Mustang · symptom sheet

Engine overheats or leaks coolant

40owner reports
59,500median miles
$10,000median quote
0involved a crash

Newest report Aug 27, 2026 · checked Sep 19, 2026

59 of the 147 complaints on this car are about the engine. 40 of those describe overheating, which makes it the most reported problem on the 2019 Mustang.

Tick what matches of 40 reports

the temperature gauge climbed into the red

coolant is disappearing or on the ground

white smoke from the tailpipe

the heater stopped blowing hot

the dealer found a head gasket or cracked block

the engine was replaced afterward

What got replaced

Owners who name the part that was replaced mention the head gasket (20 reports).

Recalls and investigations

No recall on the engine covers the 2019 model year as of Sep 19, 2026.

NHTSA investigations into the engine on the Mustang

DP05-005opened Sep 22, 2005

Engine And Engine Cooling · model years 1997 to 2004

Spark plug ejection from cylinder head. Closed jan 4, 2006.

NHTSA summary

ON SEPTEMBER 6, 2005, ODI RECEIVED A PETITION REQUESTING THAT THE AGENCY INVESTIGATE ALLEGATIONS OF ENGINE SPARK PLUG EJECTION IN CERTAIN MODEL YEAR 1997 THROUGH 2004 FORD VEHICLES WITH TRITON V-8 AND V-10 ENGINES.ODI RECEIVED A TOTAL OF 474 NON-DUPLICATIVE COMPLAINTS ON THE SUBJECT VEHICLES WHERE THE COMPLAINANT, OR THE DEALER REPAIRING THE VEHICLE, REPORTED THAT A SPARK PLUG DETACHED FROM THE CYLINDER AND/OR EJECTED FROM THE ENGINE.AS OF DECEMBER 8, 2005, ODI IS NOT AWARE OF ANY ALLEGATIONS WHERE THE ALLEGED DEFECT RESULTED IN A LOSS OF VEHICLE CONTROL, A CRASH, AN INJURY, OR A FATALITY IN ANY OF THE 10,319,810 SUBJECT VEHICLES.IN ADDITION, ODI IS AWARE OF ONLY TWO INCIDENTS WHERE THE VEHICLE STALLED WITHOUT RESTART.INFORMATION CONTAINED IN THE ODI CONSUMER COMPLAINTS AND OBTAINED FROM 72 TELEPHONE INTERVIEWS WITH COMPLAINANTS SHOWED THE FOLLOWING:(1) 99% OF THE COMPLAINTS WERE ON MY 1997 TO 2002 SUBJECT VEHICLES.(2) MOST THE COMPLAINANTS REPORTED HEARING A LOUD POP WHILE DRIVING OR UPON STARTING UP THE VEHICLE FOLLOWED BY A LOUD, REPETITIVE CLICKING OR POPPING SOUND.(3) MANY OF THE COMPLAINANTS REPORTED THAT THE POPPING SOUND WAS ACCOMPANIED BY SOME LOSS OF VEHICLE POWER; HOWEVER, IN 99% OF THE INCIDENTS REPORTED, THE VEHICLE DID NOT STALL.IN THE VERY FEW INCIDENTS WHERE THE VEHICLE DID STALL, MOST VEHICLES COULD BE RESTARTED.(4) ONLY A SMALL PERCENTAGE OF THE COMPLAINANTS CITED THAT THEY SMELLED GAS OR A SLIGHT BURNING SMELL WHEN THE INCIDENT OCCURRED.(5) IN ALL BUT A VER

None of these investigations covers the 2019 model year.

What owners paid

6 of the 40 reports quote a price. Each dot is one quote. The middle half runs $3,900 to $10,728.

$3,900$10,000$10,728

$0k$2k$4k$6k$8k

When it happens

The middle half of failures fell between 40,000 and 87,453 miles, from the 26 reports that gave a mileage.

121

223

1224

1525

1026

What owners wrote

“The component that failed on my ecoboost mustang 2019 was a failed design in the motor called the head gasket. The head gaskets broke and started leaking coolant into the engine. The engine has 39,000 miles”
Filed Jan 30, 2026 · 39,000 miles

“Blown Head Gasket @ 86,000 miles due to Block defect. Now I have to either pay to replace the Head Gasket with the expectation that it will fail again due to the block defect, or replace the whole defective block.”
Filed Nov 26, 2025 · 86,000 miles

“Check engine light on. Code is p0301 for multiple cylinder misfires. At startup I can hear coolant sloshing around and white exhaust. Coolant is leaking into cylinder 1. The Ford dealer says it needs a new engine. 2019 ford mustang ecoboost at 55k miles.”
Filed Aug 28, 2025 · 55,000 miles

“Coolant intrusion into cylinder 2 at 26,000 miles. Was told by mechanic this is due to thin cylinder wall design between cylinder 2 and 3. And the thin coolant channel cut between them. A new engine block manufactured after 2020 was recommended because the engine design was changed to fix this issue. My warranty expired 4 months prior so I had to fix myself.”
Filed Aug 28, 2025 · 26,000 miles

Should you keep driving it?

This page can't tell you that. 0 of 40 reports involved a crash. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.

File your own report with NHTSA. Complaint counts are how a problem gets an investigation.