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10.0

really awful
Crashes / Fires:
0 / 1
Injuries / Deaths:
2 / 0
Average Mileage:
23,814 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2017 Ford Mustang engine problems

engine problem

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2017 Ford Mustang Owner Comments

problem #18

Jun 152023

Mustang

  • 101,000 miles

A D V E R T I S E M E N T S

The contact owns a 2017 Ford Mustang. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power while driving sluggishly. The check engine warning light was illuminated. The vehicle was taken to the dealer, who determined an increased bore size for cylinder #2, which was allowing an abnormal amount of coolant to flow into the engine. The vehicle was not repaired. The manufacturer was notified of the failure but referred the contact to the NHTSA Hotline for assistance. The failure mileage was 101,000.

- Humble, TX, USA

problem #17

Jun 152023

Mustang

  • 101,000 miles
The contact owns a 2017 Ford Mustang. The contact stated that while driving at an undisclosed speed, the vehicle lost significant motive power while driving sluggishly. The check engine warning light was illuminated. The vehicle was taken to the dealer, who determined an increased bore size for cylinder two was allowing an abnormal amount of coolant to flow into the engine. The vehicle was not repaired. The manufacturer was notified of the failure but referred the contact to the NHTSA hotline for assistance. The failure mileage was 101,000.

- Humble, TX, USA

problem #16

Jun 142022

Mustang

  • miles
June 2022, approx. 53000 miles, misfire codes. Replaced spark plugs. Codes continued intermittently. January 2023 car was inspected due to heater inop at 61228 miles. Coolant low and misfires. No repairs, just coolant added. I topped off coolant 3X until April of 2023 at 61631 miles, white smoke and damp smell from exhaust along with continuing misfires. Dealer stated water intrusion, engine and turbo bad. No warranty, less than 50% of cost covered by manufacturer. June 2023 car was returned to me. Back at dealer 4 days later, 61691 miles, rear end shudder. Bad rear differential. Manufacturer covered less than 50% of cost. All maintenance was performed at or earlier than warranty required including rear differential service at 33283 miles with Ford.

- San Leandro, CA, USA

problem #15

Oct 062023

Mustang

  • miles

A D V E R T I S E M E N T S

I was driving at 60mph when the transmission automatically downshifted to second gear while all sport modes were OFF and T/C was ON. Car was simply on drive, and after merging onto freeway and had completely let go of the accelerator pedal the car downshifted by itself no down shifting was done by the paddles. This is the 4th time my car does this and I have to upshift as fast as possible because RPMs go up as high at 7000. i-??ve made some reading and looked at some TSBs looks like this issue has happened to other owners who their vehicle is equipped with the 6R80 transmission.

- San Mateo, CA, USA

problem #14

Jan 012021

Mustang

  • miles
Car leaking Freon for years causing black mold throughout the car and directly in my face for years. It-??s otorless but does smell musky like black mold the technician said. Repair shop stated Freon leak but can-??t locate it resulting in me losing my job from being too sick to work from black mold overgrowth in my body from this car. My son and I have brain fog, digestion issues, clumsy, sinus and throat always has mucus, fatigue and overall feeling of being unwell. This has caused my now 4 year old son and I to be in and out of the hospital for about 2 years but the last year was really bad. Ford is not acknowledging this is a problem however I found a TSB listed online. Please help me get this car fixed or help me get out of this car as it is killing us resulting in poor quality of life and life long health issues that affect our lives every day. NHTSA ID Number: 10144920 Manufacturer Communication Number: TSB 18-2256

- Santa Rosa, CA, USA

problem #13

Mar 262023

Mustang

  • miles
My mustang with approximately 41,000 miles now needs a NEW engine ($8,100) because of these known issues with these EcoBoost engines. How come they are allowed to sell lemons to the American people??

- Atlanta, GA, USA

problem #12

Jul 282022

Mustang

  • 13,000 miles

A D V E R T I S E M E N T S

The contact owns a 2017 Ford Mustang. The contact stated that while driving at various speeds, the vehicle intermittently experienced surging, hesitation, and a loss of motive power. On one occasion while driving at an undisclosed speed, the vehicle stalled and was towed to the local dealer who diagnosed that the air compressor and battery had failed, causing two engine belts to malfunction. No further information was available. The vehicle was repaired however, the failure persisted. The manufacturer was notified of the failure but no assistance was offered. The failure mileage was 13,000.

- Staten Island, NY, USA

problem #11

Jan 022020

Mustang 4-cyl

  • 49,000 miles
There is oil leak from valve cover gasket and S550 ecoboost Mustang and dealership would not even repair the car under warranty unless its a running oil leak. There is multiple post of this situation.

- Wheeling, IL, USA

problem #10

Aug 012019

Mustang

  • 55,000 miles
The contact owns a 2017 Ford Mustang. After the vehicle was fueled, it stalled when stopped at a stop sign or red light. In addition, the check engine indicator illuminated. The vehicle was taken to an independent mechanic where the contact was informed that the purge valve needed to be replaced. Tallahassee Ford Lincoln (243 N magnolia dr, tallahassee, fl 32301, (850) 877-1171) was called and the contact was waiting for a call back. The vehicle was not taken to a dealer for diagnostic testing or repairs. The manufacturer was made aware of the failure and informed the contact that the VIN was not included in a recall. The failure mileage was 55,000.

- Tallahassee, FL, USA

problem #9

Jun 302019

Mustang

  • 19,400 miles
2017 Ford Mustang GT premium with less than 20K miles while driving stalled and engine caught fire. No prior warnings, smells or leaks on the garage floor. I have the fire report and all other documents but couldn't get them to upload.

- Friendswood, TX, USA

problem #8

Apr 242019

Mustang

  • 41,000 miles

A D V E R T I S E M E N T S

Driving on a flat road then drive up a hill it takes longer to go into gear. Takes longer to shift. Loss of power

- San Diego, CA, USA

problem #7

Nov 242018

Mustang

  • 41,200 miles
My vehicle, manufactured June 2016, is having an oil leak from the engine cooler hose. My specific VIN was not recalled but this issue started last week and falls under both model year and manufactur dates for this recall Ford # (16S40). This occurs after vehicle operation on any street, typically after the vehicle comes to a stop at a light or the vehicle is parked, smoke with the odor of burnt oil emits from the driver side of the engine bay.

- Nesconset, NY, USA

problem #6

Feb 012018

Mustang

  • 1,600 miles
Engine rod bearing are defective or improperly installed. Experiencing rod bearing play, which causes a lower engine tapping sound during acceleration. Original engine experienced the tapping at 1,600 miles, and replacement engine experienced it at 300 miles. Pending 3rd engine replacement.

- Mesa, AZ, USA

problem #5

Jul 102018

Mustang

  • 2,800 miles
Car started leaking oil at 2,800 miles, being repaired at dealership

- Westlake, OH, USA

problem #4

Jun 182018

Mustang 8-cyl

  • 3,100 miles
My 2017 Ford Mustang GT with only 3000 miles on it has almost to no coolant in it it's been a garage kept car hasn't even seen a track or driving it hard!! I have never owned a new car that just lost coolant like that. The reason I'm reporting this is I seriously think this is a very wide spread problem with all Ford lineup for all I know 2017 year my sister owns the 2017 Ford escape with only 10,000 miles on it her car was the first to have this problem we call Ford they say bring it in but they won't be able to even look at until July of next month because they have so many in the shop with cooling issues. She's stuck with a rental for over a month they didn't even want to offer her one! how can someone not have a car for over a month and still have a job?? but back to my car as of today 06/18/2018 my Mustang had the same freaking problem now so here we are paying over $800 in car payments just to be [xxx] without two cars for months I think this unacceptable and would greatly appreciate it if you all could maybe look into this I honestly think this is a massive recall that should be aware of especially living in Texas where it gets 100+ degrees we drive mostly on a highway everyday might be when in motion not too sure yet. Information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Fort Worth, TX, USA

problem #3

Oct 242016

Mustang 8-cyl

  • Manual transmission
  • miles
The contact owns a 2017 Ford Mustang. The contact received notification of NHTSA campaign number: 16V779000 (engine and engine cooling); however, the part to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available. Updated 01/26/17

- Basking Ridge, NJ, USA

problem #2

Oct 302016

Mustang

  • 6 miles
Dealer sold vehicle with stop sale recall.

- Miami, FL, USA

problem #1

Oct 242016

Mustang 8-cyl

  • 550 miles
Autonation canton Ohio sold me a dangerous car under recall car can catch fire while driving due to major engine oil leak.

- Southampton, NY, USA

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