“Charge system service now” came on the dash, battery lost power after about 10 seconds, screen went black, dash went black, car locked up, opened the hood and the engine was on fire, called 911 who came quickly and put the fire out without the entire car burning, insurance later total losses the car. I don’t know if it was the battery or the engine responsible for the failure, because the…
2015 Ford Mustang engine problems
moderate 22 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Failure mileage
Complaints
22
Recalls
0
Avg fix
$3,100
1fire
When does it fail?
Of the 22 engine complaints filed for the 2015 Ford Mustang, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
The failure pattern owners describe
The 2015 Mustang engine complaints break down into hard mechanical failures and operational issues. Owners report cracked engine blocks leading to oil or coolant leaks at mileages ranging from 74,000 to 109,000 miles—sometimes triggering loud booms and smoke before loss of power. Connecting rod, piston rod, and valve train failures show up around 20,000–45,000 miles. Coolant leaks from warped cylinder heads and valve cover gaskets are common, often identified by white smoke on cold mornings.
Electrical charge system failure led to a complete vehicle fire on the highway after a battery warning appeared. Engine stalling without codes happens even in the first 1,000 miles—some owners report repeated shutdown events that dealers cannot reproduce. One owner claims six engine replacements since 2018. Variable cam timing knock, throttle body limp mode (P2112), and fuel tank pressure sensor faults also surface. The 2.3L EcoBoost variant is flagged as particularly prone to coolant damage.
No owner reports catching these failures through warning lights; most happen suddenly at highway speeds. Dealers often cannot diagnose no-code stalls, and Ford has been reluctant to assist once vehicles drop out of warranty—despite multiple outstanding recalls remaining unrepaired on some vehicles.
Same Ford Mustang engine reports on nearby years: 2012 · 2016 · 2017 · 2018
Failure modes owners describe
Engine fire / electrical charge system failure
Charge system warning message appeared, battery lost power, infotainment screen and dash went dark, vehicle locked up with loss of all electrical power. Flames originated from engine area. Incident occurred without prior mechanical symptoms.
When: Highway driving, 60 mph
Symptoms owners cite: Charge system service now warning; Battery power loss within 10 seconds; Dashboard and screen blackout; Complete electrical shutdown; Engine fire
Repairs/costs cited: Vehicle total-loss by insurance. No dealer inspection performed.
Connecting rod failure
Connecting rod failure caused sudden loss of engine power on highway. No prior warning signs; all gauges read normal before failure. Dealership confirmed mechanical defect.
When: Highway speeds; under 1 mile before exit
Symptoms owners cite: Sudden loss of engine power; No warning gauges or lights
Repairs/costs cited: Dealership diagnosed connecting rod failure; vehicle available for inspection
Fuel tank pressure sensor failure with stalling and white smoke
Vehicle stalled multiple times shortly after startup with white smoke emitting from rear exhaust at highway speeds. Fuel tank pressure sensor diagnosed as defective at ~90,000 miles.
When: 90,000 miles
Symptoms owners cite: Multiple stalls after startup; Engine warning light; Service tire mobility kit warning; White smoke from rear exhaust at high speeds
Repairs/costs cited: Independent mechanic diagnosed defective fuel tank pressure sensor; dealership declined to assist without diagnostic fee
Recalls/TSBs owners mention: Vehicle outside warranty; no recall; no assistance offered
Start/stop button sensitivity issue
Start/stop button operates with extremely light pressure and convex surface. Light contact from adjusting air temperature caused engine shutdown while driving; vehicle only restarts when shifted to Park. Safety concern due to button proximity to other controls.
When: Highway driving
Symptoms owners cite: Engine shuts down with minimal button contact; Engine requires Park shift to restart; Seat did not return to exit position
Engine block leak with overheating
Engine block began leaking coolant at ~80,000 miles. Vehicle overheated without warning while driving 75 mph; burning odor and temperature gauge spike. Independent mechanic diagnosed leaking engine block requiring replacement. Failure recurred after temporary coolant addition.
When: 80,000 miles
Symptoms owners cite: Abnormal burning odor; Temperature gauge spike to hot; Overheating warning illuminated; Coolant leak from engine block
Repairs/costs cited: Engine block replacement required; vehicle not repaired
Recalls/TSBs owners mention: Manufacturer referred owner to NHTSA to file complaint
Unexplained engine shutdown during acceleration
Engine automatically shuts off without warning during acceleration or when extra power is needed, occurring within first 1,000 miles. Happens consistently when coasting in 6th gear awaiting speed reduction. Dealership unable to diagnose due to absence of fault codes.
When: First 1,000 miles; during acceleration or coast-down phases
Symptoms owners cite: Automatic engine shutdown during acceleration; Shutdown during gear coast-down; No fault codes present
Repairs/costs cited: Dealership unable to locate cause; no repair performed
Recurring engine failure requiring six replacements
Engine stalled on highway at ~82,000 miles requiring replacement. Owner reports engine has been replaced six times since vehicle purchase in 2018. Manufacturer states engine would be replaced but vehicle would not.
When: 82,000 miles; recurring throughout ownership
Symptoms owners cite: Highway stalling; Complete engine failure
Repairs/costs cited: Six engine replacements performed under warranty
Recalls/TSBs owners mention: Engine replacement offered; vehicle replacement refused
Cracked engine block with oil leak
Loud boom and shudder heard during 65 mph acceleration followed by heavy smoke entering cabin. Oil found all over road and back of vehicle. Cracked engine block diagnosed at dealership at 74,000 miles.
When: 74,000 miles; highway driving at 65 mph
Symptoms owners cite: Loud boom noise during acceleration; Vehicle shudder; Smoke entering cabin; Heavy oil leak
Repairs/costs cited: Cracked engine block diagnosed; out of warranty
Recalls/TSBs owners mention: No warranty assistance offered
Engine block hole with oil leak
Check engine light illuminated followed by abnormal bump and loss of power at 40 mph. Hole discovered in engine block with active oil leak. Long block replacement required at 109,000 miles.
When: 109,000 miles
Symptoms owners cite: Check engine light; Abnormal bump/clunk; Loss of motive power; Oil leaking from hole in block
Repairs/costs cited: Long block replacement required; vehicle not repaired
Valve cover gasket leak onto exhaust manifold
Valve cover oil leak sprayed onto exhaust manifold creating smoke from under hood at 55,000 miles. No warning lights present. Independent mechanic added head gasket holes and bolts as repair attempt.
When: 55,000 miles
Symptoms owners cite: Smoke from under hood; Oil leaking from valve cover area; No warning lights
Repairs/costs cited: Independent mechanic drilled four head gasket holes and added bolts; no diagnosis from dealer
Recalls/TSBs owners mention: Manufacturer referred to NHTSA Hotline
Variable cam timing knock at idle and low speed
Knocking noise at idle (900 rpm) and during drive at speeds up to 15 mph. Initially misdiagnosed by one Ford dealer as V-8 5.0L issue when vehicle has V-6 3.7L. Second dealership identified variable cam timing as cause but denied warranty coverage despite Premium Care coverage active until 2021.
When: Idle and low-speed driving
Symptoms owners cite: Knocking noise at idle (900 rpm); Knocking during low-speed drive (up to 15 mph)
Repairs/costs cited: Variable cam timing identified as cause; warranty denied
Recalls/TSBs owners mention: SSM 47787 referenced but deemed not applicable by manufacturer
Oil leak from engine
Oil leaking from engine at 4,000 miles. Fuel odor present inside and outside vehicle. Fuel tank door design allows random opening, exposing fuel opening without cap.
When: 4,000 miles
Symptoms owners cite: Oil leak from engine; Fuel odor inside and outside vehicle; Random fuel tank door opening
Repairs/costs cited: Cause not diagnosed
Engine seizure
Loud noise from engine during 30 mph residential street driving followed by complete failure to crank. Engine seized despite being well-maintained with no prior symptoms. Mechanical defect suspected at 43,000 miles.
When: 43,000 miles
Symptoms owners cite: Loud engine noise; Complete seizure; Engine will not crank
Repairs/costs cited: Mechanic stated likely factory defect and engine seizure
Recalls/TSBs owners mention: Ford customer service unreachable by phone
Fuel tank hole with fuel leak and engine failure
Fuel tank developed hole causing fuel leak and engine became inoperable at 89,000 miles. No warning indicators present. Engine was replaced but same failure recurred.
When: 89,000 miles
Symptoms owners cite: Fuel leaking from fuel tank; Engine inoperable; No warning lights
Repairs/costs cited: Hole in fuel tank diagnosed; engine replaced but problem recurred
Recalls/TSBs owners mention: Manufacturer contacted but declined assistance
Fractured piston rod with clunking
Abnormal clunking sound from engine caused by fractured piston rod at 23,000 miles. No repair attempted; manufacturer notified.
When: 23,000 miles
Symptoms owners cite: Abnormal clunking sound from engine
Repairs/costs cited: Fractured piston rod identified; no repair performed
Recalls/TSBs owners mention: Manufacturer notified
Warped cylinder head with coolant leak and white smoke
Cylinder 1 head warp causing coolant to leak into cylinder, producing white smoke on cold mornings. Owner reports this is common problem in 2014-2015 models. Condition progresses from misfire codes to head warping.
When: Cold mornings; recurring across model year
Symptoms owners cite: White smoke in morning; Vibration; Engine power loss; Misfire error codes (precursor)
Codes mentioned: Misfire codes (precursor)
Repairs/costs cited: Cylinder head warping and coolant leak; reported as very expensive repair
Unexplained stalling at low mileage
Vehicle stalled without warning at low speed at 6,000 miles. Cause could not be determined by dealer despite inspection.
When: 6,000 miles
Symptoms owners cite: Vehicle stall without warning at low speeds
Repairs/costs cited: Dealership unable to determine cause
Recalls/TSBs owners mention: Manufacturer notified
Throttle body limp mode failures
Throttle body randomly engages limp mode at speeds between 10-60 mph, occurring three times in two weeks. Diagnostic code P2112 present. Ford has TSB for 2016+ models with same issue but not for 2015.
When: Recurring; multiple incidents within 2-week period
Symptoms owners cite: Random limp mode engagement; Speed loss capability
Codes mentioned: P2112
Repairs/costs cited: TSB exists for 2016+ models but not applicable to 2015
Recalls/TSBs owners mention: TSB 47787 available for 2016+ only
2.3L EcoBoost coolant leak engine damage
2.3L EcoBoost engine prone to coolant leaks causing significant engine damage. Owner notes this as most common engine failure issue for this model.
When: Unknown
Symptoms owners cite: Coolant leak; Engine damage
Engine bolt loosening and damage to transmission components
Bolt at back of engine rattled loose, scarring the torque converter, flexplate, bell housing, and engine block.
When: Unknown
Symptoms owners cite: Bolt loosening; Transmission component damage
Repairs/costs cited: Torque converter, flexplate, bell housing, and engine block scarred
Oil pan ticking sound at low mileage
Ticking sound from under car at oil pan area after oil change at 24,000 miles. Owner concerned engine may be damaged.
When: 24,000 miles; after oil change
Symptoms owners cite: Ticking sound from oil pan area
Unrepaired safety recalls
Vehicle has multiple outstanding safety recalls that have not been repaired.
When: Unknown
Symptoms owners cite: Recalls outstanding
Repairs/costs cited: Recalls not repaired
Recalls/TSBs owners mention: Recalls exist but not completed
Synthesized from 22 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 3 most recent
Tl* the contact owns a 2015 Ford mustang. While driving 75 MPH, the contact noticed an abnormal burning odor without warning. In addition, the vehicle temperature gauge went to hot and caused the overheating warning indicator to illuminate. The contact pulled over, shifted into park, added coolant, and the vehicle returned to normal. The vehicle was taken to an independent mechanic where it was…
Tl* the contact owns a 2015 Ford mustang. The contact stated that while driving at low speeds, the vehicle stalled without warning. The vehicle was taken to a dealer but the failure was unable to be determined. The manufacturer was notified of the failure. The failure mileage was 6,000.
Had engine trouble with your 2015 Ford Mustang?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2015 Ford Mustang?
It's a documented issue but not catastrophic. 22 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
At what mileage does the engine typically fail?
Across the 16 complaints that reported odometer mileage, most engine failures cluster between 24,000 and 82,000 miles, with the median around 60,100. A quarter of owners report trouble before 24,000; a quarter make it past 82,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2015/Ford/Mustang.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.