Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2006 Ford Mustang owners, lightly cleaned up (personal details are redacted by NHTSA).
I bought a 2006 Mustang convertible for my wife on her 40th birthday. We store the car every winter and bring the battery into the home. Car has 40k miles. 6 years ago we began experiencing amperage draw while the vehicle is off. I have went through 4 batteries, 1 alternator, several flat bed truck tows, and weeks into service at my local Ford dealer - only to have the dealership continue to tell me how difficult it is to find 'parasitic' amp draw because it is intermittent. My wife has had it being stuck and now afraid to drive the car, and contemplating to get rid of it. I work for a major tier 1 automotive supplier in engineering and know how my company pays special attention to NHTSA complaints and investigations relating to our products. I am hopeful that Ford engineering will get a hold of me and get this right before I take the Mustang to the scrap yard!
1. Trunk too high; back windows slope blind driver from street light reflection. 2. Hood and windshield designed deny driver from seeing the curves coming on side angles. (causing vehicle ending up on curve) 3. ABS auto activate when vehicle going over pothole, causing slipping and driver cannot control the braking distance. 4. Ac/heat fan auto activate without consent even when sitting on off. I have a v6, 2006 Mustang. The safety issue that I have is the fact that the design of the vehicle that jeopardizing the children under 3 feet tall.: their trunk are too high and the slanted mirror block visibility. At night time backing out is very hard and there are many blind spots. I have backed up into another car already due to the poor visibility and light reflection: back window design with an angle that blind drivers when night light hits. The owner and I settled in cash. …
For about 3 years, constant problem with water leaking onto my passenger floor board. I have to put plastic bags outside the windshield underneath the wipers every time it rains. This doesn't keep all the rain from coming in but it helps. I can no longer go through a car wash because it floods the inside of my car. I now have a plastic bucket on the passenger floor board in case it rains while I am driving so the interior doesn't get flooded. There is now a mildew smell in my car. There have been many complaints about this so it is ridiculous that we consumers have to foot the bill for an issue that Ford has known about for a long time. The last time I checked with a dealer a few years ago they said it would cost approx. $800-900 to try to fix; I'm sure some people have an extra grand laying around but I sure don't. Ford needs to issue a recall on this issue!! …
For a while now I have been experiencing after rain - water flowing through the passenger side firewall and along the passenger side kick board where the Smart conjunction box (fuse box) is. I have taken it to a Ford dealer who said he didn't know what I was talking about and would be $95.00 to start looking in to what the problem is. This past Saturday, I parked my vehicle the key was stuck in the ignition and the car will not shift out of park. After searching online it seems this issue can be directly related to water damage. Water seeping in to the fuse box. I also found online where there are a number of model years that have had this issue. Now I am going to be stuck with a gigantic repair bill for a design flaw that Ford knows about and could of issued a recall for.
Car suddenly went into limp mode, no reason. Just started it up one day and it just did not want to move. No one knows how to get it out of the mode. Many mechanics have tried with no luck. Now a mechanic says I have a faulty computer. 3 years of it acting this way.. Computer diagnosis showed many things messed up, even after replacing all of those (and I am sure some were uneeded) the car is still in limp mode, has no power at all and has been basically down for 3 years. Beautiful lawn ornament but it being all I have left of my late husband, I'm not happy it just sits there. No mechanic wants to even touch it!
When I try to put gas in my car the car will only allow me to put half of a tank in the car and I have to force it to take more which as cause the gasoline to overflow even when the tank is not full. I have tried taking it to various gasoline stations all different brands to see if there are any differences but have not had any success.also the vehicle is staionary. This originally happen in 2019 but it has happen every time since then. Also my reverse light will not turn off for some reason. Don't know why.
In city traffic at a stop light, went to step on the gas to accelerate, the engine started extreme shaking & the car would not go. Shut off the engine & restarted it. The wrench light & check engine light came on the dashboard and car went into limp mode & lost all acceleration. After multiple attempts at restarting, the car was not drivable. Had the car towed to the dealership, advised service rep of consumer satisfaction program 13n03 & was informed that Ford will not honor the program for 2006 Mustang.
PCM module/crash data report says that the throttle position sensor went to 100% with accelerator at 60% and then the throttle stayed wide open until accelerator pedal was released to approx 23% percent. Why is there a 40% difference in the PCM data from accelerator pedal position to the throttle position. At the trial a guy from Ford said this is normal and the throttle is designed this way. My husband is now on his way to prison. Is this true and can anyone help or advise us.
The "well" underneath the windshield became clogged with debris, causing water to back up through the A/C vents into the car, damaging the electrical equipment. There are no instructions in the manual related to servicing this part of the car. Additionally, the door handles can become "stuck" in the open position without the driver noticing because the door still closes; however, the doors May come back open when the vehicle is operated.
Around one month after I bought the car intermittently the I would encounter surges when starting to go at lights or parking the car, coming to a stop... Now the car is stalling same as the surges... I have replaced many parts trying to resolve the issue. Now it has become a serious hazard to drive and costly!
Electrical complaints in other Mustang years
Frequently asked questions
How common are electrical problems on the 2006 Ford Mustang?
NHTSA has 42 complaints about the electrical system of the 2006 Ford Mustang, 7% of the model year's 575 complaints. The component named most often is ignition (2 mentions).
Is there a recall for 2006 Ford Mustang electrical problems?
No. NHTSA lists no electrical system recall for the 2006 Ford Mustang, though it has 5 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2006 Ford Mustang electrical problems start?
Half of the complaints with a recorded mileage happened before about 56,000 miles, and 22% before 25,000 miles.
Is it dangerous?
Owners linked 3 crashes, 0 fires and 2 injuries and 2 deaths to electrical system problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.