2019 Ford Mustang · symptom sheet
Engine overheats or leaks coolant
- 42owner reports
- 56,000median miles
- $10,000median quote
- 0involved a crash
Newest report Sep 22, 2026 · checked Oct 2, 2026
61 of the 149 complaints on this car are about the engine. 42 of those describe overheating, which makes it the most reported problem on the 2019 Mustang.
Tick what matches of 42 reports
Overheating on other Mustang years
Report counts are for each model year on its own, so a newer car has had less time to collect them. Model years with too few reports of it for a sheet: 2014, 2015, 2017, 2020.
What this problem usually is
Most owners in this group notice the coolant before they notice the heat: a reservoir that keeps dropping, a sweet smell, or a bright puddle under the front of the car. Across the vehicles on this site, about four in five of these complaints mention coolant, a leak or a puddle, and roughly two in five mention the temperature gauge or overheating.
What got replaced
Owners who name the part that was replaced mention the head gasket (21 reports).
Recalls and investigations
No recall on the engine covers the 2019 model year as of Oct 2, 2026.
NHTSA investigations into the engine on the Mustang
Spark plug ejection from cylinder head. Closed jan 4, 2006.
None of these investigations covers the 2019 model year.
What owners paid
6 of the 42 reports quote a price. Each dot is one quote. The middle half runs $3,900 to $10,728.
When it happens
The middle half of failures fell between 40,000 and 87,453 miles, from the 27 reports that gave a mileage.
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 42 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. How reports land on this sheet.
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Other problems on this car
- Check engine light or misfire 40 reports
- Engine failure, knocking or rod bearing 29 reports