Diagsheet

2018 Ford Focus · symptom sheet

Engine overheats or leaks coolant

  • 33owner reports
  • 65,000median miles
  • 0involved a crash

Newest report Jul 31, 2026 · checked Sep 19, 2026

346 of the 830 complaints on this car are about the engine. 33 of those describe overheating.

Tick what matches of 33 reports

24
19
3
24
7
5

What got replaced

Owners who name the part that was replaced mention the head gasket (7 reports), the coolant hose or reservoir (6 reports) and the thermostat (3 reports).

Recalls and investigations

3 recalls on the engine cover the 2018 model year. A recall on the same system isn't always the same failure, so read the defect text.

26V-011Jan 15, 2026
Equipment:Electrical:Engine Block Heater

Ford Motor Company (Ford) is recalling certain 2013-2018 Focus, 2013-2019 Escape, and 2015-2016 MKC vehicles equipped with a 2.0L engine. The engine block heater may crack and develop a coolant leak, causing it to short circuit when the block heater is plugged in.

Risk and remedy
Risk: An electrical short circuit can increase the risk of a fire.
Remedy: Owners are advised not to plug in their block heater until the vehicle is remedied. Dealers will replace the block heater, free of charge. Owners will also have a alternative option to replace engine block heater element with a threaded plug, and remove the block heater electrical cord. Interim letters, notifying owners of the safety risk, were mailed March 6, 2026. Additional letters will be sent once the final remedy is available. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 26S01. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on January 16, 2026.
26V-012Jan 15, 2026
Equipment:Electrical:Engine Block Heater

Ford Motor Company (Ford) is recalling certain 2016-2018 Focus, 2019 Explorer, and 2024 Explorer vehicles. The engine block heater may crack and develop a coolant leak, causing it to short circuit when the block heater is plugged in.

Risk and remedy
Risk: An electrical short circuit can increase the risk of a fire.
Remedy: Owners are advised not to plug in their block heater until the vehicle is remedied. Dealers will replace the block heater, free of charge. Owners will also have a alternative option to replace engine block heater element with a threaded blanking plug, and remove the block heater electrical cord. Interim letters, notifying owners of the safety risk, were mailed February 13, 2026. Additional letters will be sent once the final remedy is available, anticipated in October 2026. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25SA4. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on January 16, 2026. This recall expands previous recall number 25V685.
23V-905Dec 22, 2023
Engine And Engine Cooling:Engine:Oil/Lubrication:Pump

Ford Motor Company (Ford) is recalling certain 2016-2018 Ford Focus and 2018-2022 Ford EcoSport vehicles. The oil pump drive belt or drive belt tensioner may fail, resulting in a loss of engine oil pressure.

Risk and remedy
Risk: A loss of oil pressure can result in an engine stall and a loss of power braking assist, increasing the risk of a crash.
Remedy: Dealers will replace the oil pump tensioner assembly and oil pump drive belt, free of charge. If engine failure occurs due to a damaged oil pump belt and/or oil pump belt tensioner, Ford has authorized dealers to replace the engine assembly as an interim repair before the availability of remedy parts for the final repair. This repair will be free of charge (parts and labor). Owner notification letters were mailed August 11, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 23S64.

NHTSA investigations into the engine on the Focus

EA26-004opened Jul 31, 2026
Engine And Engine Cooling · model years 2015 to 2018

Timing belt failure. Open.

NHTSA summary
On December 18, 2025, the Office of Defects Investigation (ODI) opened PE25020 to investigate instances of timing belt failure in model year (MY) 2015-2017 Ford Fiesta and MY 2015-2018 Ford Focus vehicles manufactured by Ford Motor Company (Ford), equipped with a 1.0L engine and manual transmission (subject vehicles). Additionally, MY 2018-2021 Ford EcoSport and MY 2016-2018 Focus vehicles with a 1.0L engine and automatic transmission were analyzed as peer vehicles because they utilize a wet timing belt comprised of similar material as the timing belt in the subject vehicles. Through the PE, ODI investigated a potential failure/degradation of the timing belt that may affect oil pump function resulting in a lack of engine lubrication and potential loss of motive power. The complaints commonly allege a low engine oil pressure warning lamp immediately preceding a complete loss or reduction of motive power while the vehicle is in motion. Some complaints allege that a sudden loss of motive power or engine seizure occurred without warning or prior detectable symptoms. ODI’s analysis supports that this failure can occur without sufficient and advanced warning to the driver that a loss of motive power/engine seizure is imminent. ODI found that the timing belt material may degrade and create debris that clogs the mesh oil pump pick-up screen, resulting in reduced oil pressure in the engine. As additional debris accumulates on the screen, this can progress to a loss of motive power
PE25-020opened Dec 18, 2025
Engine And Engine Cooling · model years 2015 to 2018

Timing belt failure. Closed jul 31, 2026.

NHTSA summary
On December 18, 2025, the Office of Defects Investigation (ODI) opened PE25020 to investigate instances of timing belt failure in model year (MY) 2015-2017 Ford Fiesta and MY 2015-2018 Ford Focus vehicles manufactured by Ford Motor Company (Ford), equipped with a 1.0L engine and manual transmission (subject vehicles). Additionally, MY 2018-2021 Ford EcoSport and MY 2016-2018 Focus vehicles with a 1.0L engine and automatic transmission were analyzed as peer vehicles because they utilize a wet timing belt comprised of similar material as the timing belt in the subject vehicles. Through the PE, ODI investigated a potential failure/degradation of the timing belt that may affect oil pump function resulting in a lack of engine lubrication and potential loss of motive power. The complaints commonly allege a low engine oil pressure warning lamp immediately preceding a complete loss or reduction of motive power while the vehicle is in motion. Some complaints allege that a sudden loss of motive power or engine seizure occurred without warning or prior detectable symptoms. ODI’s analysis supports that this failure can occur without sufficient and advanced warning to the driver that a loss of motive power/engine seizure is imminent. ODI found that the timing belt material may degrade and create debris that clogs the mesh oil pump pick-up screen, resulting in reduced oil pressure in the engine. As additional debris accumulates on the screen, this can progress to a loss of motive power
PE23-015opened Sep 20, 2023
Engine And Engine Cooling · model years 2016 to 2018

Oil pump failure. Closed feb 14, 2024, led to recall 23V-905.

NHTSA summary
On September 20, 2023, the Office of Defects Investigation (ODI) opened PE23-015 to investigate instances of engine failure due to loss of oil pressure in model year (MY) 2018-2021 Ford EcoSport vehicles. Some consumers reported a low engine oil pressure warning lamp immediately preceding a complete loss or reduction of motive power while the vehicle was in motion. The investigation revealed that the engine oil pump drive belt tensioner arm may fracture, separate from the tensioner backing plate, and/or the oil pump drive belt may degrade and lose teeth, resulting in a loss of engine oil pressure. A loss of engine oil pressure can result in engine seizure, which can result in a loss of motive power and a loss of mechanical vacuum pump required to provide power braking assist, increase the risk of a crash. On December 22, 2023, Ford filed recall 23V-905 for certain MY 2016-2018 Ford Focus and 2018-2022 Ford EcoSport vehicles. The recall remedy provides the replacement of the oil pump drive belt tensioner assembly and oil pump drive belt with redesigned parts to improve robustness. In view of the recall action being taken by Ford, ODI is closing this Preliminary Evaluation. The agency reserves the right to take additional action if warranted by future circumstances. To review the reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.
PE02-040opened Apr 4, 2002
Engine And Engine Cooling · model years 2000 to 2001

Engine stalling. Closed sep 9, 2002.

NHTSA summary
THE PRIMARY CONCERN OF THIS PE IS LOSS OF ENGINE POWER.STALLING MAY OCCUR AT LOW SPEED OR HIGH SPEED.AT THE TIME OF OCCURRENCE THE AVERAGE VEHICLE MILEAGE IS 30,000 MILES.BECAUSE THESE VEHICLES STALL AND/OR HESITATE UNPREDICTABLY, AN INCREASED RISK IS INHERENT TO THESE VEHICLES.IF A DRIVER EXPECTING THIS VEHICLE TO PERFORM AS DESIGNED, IS TRYING TO CROSS AN INTERSECTION OR MERGE INTO TRAFFIC WHEN THE VEHICLE STALLS IT PLACES ALL MOTORISTS WITHIN THE AREA AT RISK.A DISABLED VEHICLE IS VULNERABLE TO COLLISIONS NOT ONLY WITHIN THE ROADWAY, BUT ALSO ALONG SIDE THE ROAD AS IT WAITS FOR ASSISTANCE.

When it happens

The middle half of failures fell between 55,000 and 94,000 miles, from the 22 reports that gave a mileage.

219
222
423
924
925
726

What owners wrote

“Engine light is on with the code reading the clutch and the transmission is overheating with sticking gears as I drive”

Filed Mar 16, 2026

“Vehicle experienced a highway-speed overheat and automatic engine shutdown. Inspection revealed antifreeze intrusion into the under-hood engine fuse box, causing widespread fuse degradation and electrical failure. This occurred following recall-related service. Vehicle lost power and is unsafe to operate due to electrical contamination and fire risk. Manufacturer and dealer have been unresponsive.”

Filed Dec 16, 2025

“Coolant kept emptying out and causing the engine to overheat randomly. The only warning would be having to immediately pull over right then because the engine was dangerously hot. Heater core had to be replaced because it was extremely damaged even though no accidents or anything happened to cause it to be. The metal of the core just failed in an area cause a huge hole.”

Filed Feb 25, 2025

“Coolant keeps disappearing with no sign of leaking, only possibly on the ground when my car sit. Engine keeps overheating and smoke comes out of air vents. Recall that is out now is what seems to be the issue but does not cover my Ford focus.”

Filed Jul 17, 2024

Should you keep driving it?

This page can't tell you that. 0 of 33 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.

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