2018 Ford Mustang Engine Problems

Which parts fail

• Exhaust system
  1

Components named in complaints (engine, cooling system, oil leaks, timing chain, exhaust).

Mileage when the problem started

• Under 25k
  1755%
• 25k–50k
  413%
• 50k–75k
  826%
• 75k–100k
  13%
• 100k–150k
  13%
• 150k+
  00%

Owner reports

Selected complaints filed with NHTSA by 2018 Ford Mustang owners, lightly cleaned up (personal details are redacted by NHTSA).

The contact owns a 2018 Ford Mustang. The contact stated that the air conditioning system failed to function as intended. Additionally, the contact stated that while accelerating from a complete stop, several unknown warning lights were illuminated, and the vehicle chugged and failed to accelerate as intended. The contact pulled over to the side of the road. The vehicle was towed to the residence. The contact stated that the vehicle was inoperable. The dealer was notified of the failure and informed the contact that there was no recall or warranty coverage for the vehicle. The contact was provided an estimate for the repair. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and suggested to purchase a new vehicle. The contact declined due to the sentimental value of the vehicle. The failure mileage was approximately 69,900.

The contact owns a 2018 Ford Mustang. The contact stated that while driving at an undisclosed speed, the engine overheated. The vehicle was taken to an independent mechanic, where the purge valve was replaced due to a cylinder #3 misfire; however, while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to a second independent mechanic, where the fuel pressure sensor was replaced. The mechanic informed the contact that the engine needed to be replaced. The engine was replaced; however, while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken back to the independent mechanic, who informed the contact that the fuel injector needed to be replaced due to a cylinder #2 misfire. The manufacturer was made aware of the failure. The failure mileage was approximately 88,000.

The contact owns a 2018 Ford Mustang. The contact stated while the vehicle was stationary, the contact attempted to warm up the vehicle; however, when the contact returned to the vehicle, the vehicle was off. The contact attempted to restart the vehicle and the check engine warning light illuminated. The contact restarted the vehicle however, the engine sounded like it was losing power with an abnormal ticking sound coming from the engine. The message to "Shift to Park" was displayed; however, the gear shifter was already in park(P). The vehicle was towed to an independent mechanic, the vehicle was diagnosed with engine failure due to a lack of engine oil. The vehicle was not repaired. The dealer was not made aware of the failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 129,000.

The contact owns a 2018 Ford Mustang. The contact stated that while driving at various speeds, the temperature gauge indicated that the vehicle was overheating. The contact then became aware that coolant was leaking out of the exhaust. The vehicle was taken to an independent mechanic who informed him that either the head gasket was blown or there was a hairline fracture in the engine block or the cylinder head. The contact then called the manufacturer and was informed that the vehicle was covered under warranty and referred him to the local dealer for assistance. The vehicle was towed to the dealer where he was then informed that the vehicle was not covered under warranty. The vehicle was not diagnosed or repaired. The failure mileage was approximately 53,000.

The contact owns a 2018 Ford Mustang. The contact stated that while driving at various speeds, the engine sputtered with the check engine warning light illuminated. There was heavy white smoke coming from the tailpipe. Upon arriving at the destination, the vehicle hesitated to restart, and the contact observed a significant loss of coolant. The vehicle stalled while driving at various speeds. Upon inspection, the dealer confirmed coolant intrusion in cylinders #2 and #3, resulting in total engine failure. The manufacturer was notified of the failure and stated that the VIN was not under recall, and there was no warranty associated with the vehicle. The vehicle was repaired out-of-pocket by the dealer. The failure mileage was approximately 56,000.

The contact owns a 2018 Ford Mustang. The contact stated that the check engine warning light was illuminated. The contact used a code reader which indicated that a spark plug had caused an engine misfire. The vehicle was taken to a dealer where it was confirmed as a spark plug misfire; however, the dealer determined that the failure was a result of coolant intrusion into cylinder #3. Due to the failure, the contact was informed that the engine needed to be replaced. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline. The vehicle was not repaired. The failure mileage was 72,212.

The contact owns a 2018 Ford Mustang. The contact stated that the check engine warning light was illuminated. The vehicle was taken to a certified mechanic who diagnosed the vehicle with a misfire in cylinder #1, and coolant leaking into the engine. The mechanic referred the contact to the dealer. The vehicle was taken to the dealer who confirmed the diagnosis and that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and opened a case. The manufacturer referred the contact to the NHTSA Hotline to report the failure. The failure mileage was 49,000.

The contact owns a 2018 Ford Mustang. The contact stated while driving at an undisclosed speed, the engine seized. There was no warning light illuminated. The vehicle was pushed to a nearby independent mechanic however, the vehicle was not diagnosed. The vehicle was then towed to another independent mechanic where it was diagnosed with a ruptured cylinder #1, causing engine failure. The contact was informed that the engine needed to be repaired or replaced. The vehicle was repaired. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was approximately 18,000.

The contact owns a 2018 Ford Mustang. The contact stated that while starting the vehicle, the "Exhaust Mode Not Available" message was displayed. Upon inspection, the contact discovered that the active exhaust on the rear passenger side had rubbed against the subframe, causing valve fuse 34 to blow. The contact replaced fuse 34 but was unable to disconnect the active exhaust, and the wiring had detached. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure, and a case was opened. The failure mileage was approximately 68,000.

The contact owns a 2018 Ford Mustang. The contact stated that while starting the vehicle, there was a misfire coming from the engine. The contact stated that the vehicle was shaking abnormally, with the check engine warning light illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed and determined that the head gasket had failed, and the engine needed to be replaced. The vehicle was not repaired. The dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 66,637.

Engine complaints in other Mustang years