2020 Ford Mustang Problems

What owners report

Owners of the 2020 Mustang most often describe a blank, distorted, or unavailable rearview camera image, and a smaller but steady group reports coolant getting into the engine and requiring major engine work. Complaints also cover brake pedal bracket and brake-light switch problems, automatic transmission shift complaints, and various electrical glitches such as window motors and instrument panel failures. Reports arrive at low mileage as well as past 60,000 miles.

1. 1
   Back-over prevention (rear camera)

   Blank, distorted, or unavailable rearview camera

   • 18 complaints (15%)
   • median 60,000 mi at 4.9 yrs old (5 state mileage, few)
   • filed 2023–2026

   Owners describe the backup camera showing a blank or blue screen, a distorted or mirrored image, or a "Camera Unavailable - Contact Dealer" message when shifting into reverse. Some say the image works intermittently and the dealer could not reproduce it during an appointment, while others were told the camera or camera wiring needed replacement. Several owners link the symptom to a recall notice and note that parts were not always available at the dealer. Reported from a few thousand miles up to roughly 79,900 miles, with several reports in the 17,000-57,000 mile range and many with no mileage given.

   Recall 25V695000Recall 25V442000Recall 20V5750001 related service bulletin

   What to check: Test the camera in reverse, including on a cold start, and confirm any open camera recall was actually completed with a receipt. Ask the seller whether the camera or its wiring has been replaced.

   2 excerpts from owner complaints in NHTSA records

   “The backup camera stopped working and I notice that there is a big recall on millions of vehicles for the same problem that my vehicle is having. I would also like my backup camera fixed. It just stopped displaying the image and it’s a safety hazard.”

   NHTSA complaint #11675638, filed 2025-07

   “Two issues actually 1. Back up camera gives the blue screen. Says unavailable and contact dealer. I have not yet as this just started. I am seeing a bunch of complaints on this though. 2. When I roll all the windows down then roll them up, the back triangle windows don't go up all the way. I have to get out of the car and pull them up all the way. Dealer said I just need to lube the edge and the groove they sit in. Which was tried. Didn't work. Could be a safety issue if I have to pull over and get out of the car to pull the windows up.”

   NHTSA complaint #11682908, filed 2025-08
2. 2
   Engine

   Coolant intrusion, misfires, and engine replacement

   • 22 complaints (18%)
   • median 64,750 mi at 4.7 yrs old (8 state mileage, few)
   • 2 mention a crash, fire or injury
   • filed 2023–2026

   Owners of the turbocharged 2.3L describe the check engine light coming on with misfire codes, cold-start misfires, white smoke from the exhaust, and coolant disappearing or leaking into the cylinders. Several say the dealer confirmed coolant in the combustion chamber or a failed head gasket and recommended a long block or engine replacement. A few report coolant loss and misfire symptoms continuing even after engine work. Mostly reported between about 53,000 and 86,000 miles, though some owners describe symptoms at much lower mileage.

   What to check: Check the coolant level and look for white residue or smoke at the exhaust on a cold start, and ask whether the head gasket, long block, or coolant-related repairs have been done. Have a pre-purchase inspection check for misfire codes.

   2 excerpts from owner complaints in NHTSA records

   “1. 2020 Mustang Ecoboost is equipped from factory with redesigned block to minimize/eliminate coolant intrusion and or head gasket failure. I still had the dreaded ecoboom issue with coolant intrusion on two cylinders as a result of a broken head gasket and poor engine block design. Regular maintenance was perfomed and use primarily Top Tier 93 octane fuel. 5K mile interval 5W-50 oil changes according to manual using Ford spec oil full synthetic. …”

   NHTSA complaint #11683792, filed 2025-08

   “2020 and above Mustang Ecoboost 2.3L engines are supposed to have the revised engine block design to mitigate coolant intrusion into cylinders and head gasket leak issues. My 2020 model year Mustang Ecoboost with the updated block, is suffering from coolant intrusion into cylinder #1. Confirmed by independent ASE certified repair shop as well as Ford dealership. No Codes. Symptoms includes cold start misfires and cold start white smoke from exhaust. MPG was inconsistent as well since the air/fuel ratio is disturbed by coolant intrusion. …”

   NHTSA complaint #11665955, filed 2025-06
3. 3
   Brakes

   Brake pedal bracket and brake-light switch

   • 13 complaints (11%)
   • median 5,500 mi at 1.0 yrs old (6 state mileage, few)
   • 3 mention a crash, fire or injury
   • filed 2020–2026

   Owners describe the brake pedal bracket snapping or the pedal sinking toward the floor during hard braking, sometimes with the pedal assembly left hanging. Others report the brake-light switch failing so brake lights cut out or flicker with light pedal pressure, which also affected cruise control and acceleration in one report. Dealers reportedly replaced calipers, rotors, and brake-light switches in individual cases. Bracket reports came in at very low mileage (about 2,400-6,000 miles); switch and brake concerns were reported from roughly 3,000 to 21,000 miles.

   Recall 20V573000

   What to check: Confirm the brake pedal bracket recall repair has been completed, and have someone watch the brake lights while you press and ease off the pedal to see whether they stay on.

   2 excerpts from owner complaints in NHTSA records

   “I made a safe driving training with my new 2020 Ford Mustang gt (eu model) (as I do for every new car I bought). During the first break training (emergency braking from 50km/h (~31mph) to 0 ) the break pedal broke. Luckily just right before the vehicle stops and not at the beginning of the maneuver. It was not possible to move the vehicle anymore, as the pedal was loose now and braking not possible anymore. I think maybe other batches of this plastic break-pedal holders might be affected (please see attached pictures).”

   NHTSA complaint #11352199, filed 2020-08, 2,400 miles

   “Brake light stop switch replaced 2/2/23. Now brake lights cut off if any pressure is released but foot is not removed from brake pedal. Additional harder pressure is required for brake lights to come back on. Brake lights will flicker and then cut off while foot is on brake pedal. Intermittently comes on as it should. This is an extreme safety hazard.”

   NHTSA complaint #11507324, filed 2023-02
4. 4
   Electrical system

   Electrical faults: windows, instrument panel, and warning

   • 12 complaints (10%)
   • median 25,508 mi at 3.8 yrs old (4 state mileage, few)
   • filed 2020–2025

   Owners report the instrument panel going blank or inoperable, warning messages such as Pre-Collision Assist or Hill Start Assist unavailable, and window motors that let windows stop short or move on their own. Others describe doors unlocking and opening while driving, and flickering interior and headlights. Dealers reportedly replaced modules, window motors and wiring, or were unable to find a fault. Reported from about 20,000 to 68,000 miles, with many reports giving no mileage.

   Recall 20V306000Recall 20V2630003 related service bulletins

   What to check: Cycle all windows up and down, check the instrument panel and warning messages at start-up, and ask whether any module replacements or software updates have been done.

   2 excerpts from owner complaints in NHTSA records

   “- The light of the airbag and seatbelt came on my dashboard, went to the dealership and they told me that there's an issue with the control module, apparently there is a recall for that but since my car wasn't called they could repair. - Backup camera goes completely off when trying to go on reverse.”

   NHTSA complaint #11616690, filed 2024-09

   “While driving at about 75mph the passenger door unlocked and opened by itself. We got an door not closed warning light on the dash and the warning chime in addition the horn was blowing in intervals of 2 quick beeps and repeated until we were able to pull over and reclose the door. About 1 hour later same conditions the same thing happened on the drivers side. We have since discovered from the dealer that here is a campaign number of 21N10 for this issue. Holiman Ford of Maple Shade NJ took the car in right away.”

   NHTSA complaint #11585018, filed 2024-04
5. 5
   Transmission and drivetrain

   Automatic transmission harsh shifts and slipping

   • 27 complaints (22%)
   • median 21,261 mi at 2.9 yrs old (4 state mileage, few)
   • 3 mention a crash, fire or injury
   • filed 2020–2026

   Owners describe the 10-speed automatic slamming or harshly engaging gears, refusing to move in gear with the engine revving, grinding noises on upshifts, and in some cases a dealer recommendation for transmission replacement after a stuck solenoid diagnosis. Others report the vehicle losing drive and needing to be towed. Reported from about 12,000-17,000 miles up to the 60,000s, with several reports giving no mileage.

   Recall 22V3820005 related service bulletins

   What to check: Drive the car through a full upshift and downshift sequence and note harsh engagements or delays. Ask whether transmission software updates or repairs have been performed.

   2 excerpts from owner complaints in NHTSA records

   “After driving for 2 blocks, my car would not drive when hitting the gas pedal, the engine only reved. Unable to move the car in any gear, pedestrians helped push my car out of the middle of the road. Towed the car to a Ford dealership because the Ford app on my phone said shift solenoid stuck in off position . Upon diagnosis the dealership said yes the solenoid is stuck in the off position but now the gears are slipping and you need a brand new transmission. This is the 10r80 automatic transmission that has had problems like this nationwide. …”

   NHTSA complaint #11614543, filed 2024-09

   “Transmission Issue. Transmission slams into 2nd gear when downshifting from 3rd. Transmission has grinding noise when going from 4th to 5th. Potential safety issue due to potential transmission failure. Yes, problem is reproducible, however, it is awaiting inspection at Mike Patton Ford. No warning lamps. Car has had transmission issues intermittently since 4/2020. This issue started 2 weeks ago.”

   NHTSA complaint #11653059, filed 2025-04

Buying note. Check the backup camera and brake pedal bracket recall status with a receipt rather than a verbal assurance, and test the window motors and infotainment screen during the test drive. On the turbocharged 2.3L, a coolant and misfire check before purchase is worth the cost of an inspection.

Summary written with AI from a sample of 60 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.