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really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
125,759 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.

2006 Ford Mustang engine problems

engine problem

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2006 Ford Mustang Owner Comments

problem #10

Apr 152016


  • 66,590 miles


Sudden acceleration. Happened 3-4 times before. Cruise control on highway. I rolled into it (that is not flooring it) and it would not stop accelerating. Used brakes to control car, turned off ignition, and stopped on shoulder. I had to wait what seemed like 2-3 minutes before it would restart without racing. Tonight was different. I had braked off cruise control as I exited 94E to 65N. As I began to plan my merge onto 65 a guy alone in the right lane would not move over, I rolled into and the acceleration happened again. There was no shoulder at first and the brakes were almost overwhelmed. I turned off ignition and coasted forward until I got a shoulder. On my second restart it reved to 3,000 RPM then very slowly got to a normal idle. I started driving again.

- Glenview, IL, USA

problem #9

Sep 012015


  • 88,000 miles
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.

- Centerline, MI, USA

problem #8

Jun 012015


  • 32,400 miles
I was at a stop getting ready to merge with traffic when the car just died. I restarted the car but it ran real ruff I barely got off the road. I had to towe the car home it's the throttle -by-wire this system needs to be addressed before someone gets hurt. Thanks lee

- Marysville, WA, USA

problem #7

Aug 142012


  • 56,000 miles


As of today my 2006 Mustang has 58,953 miles on it and it is on it's third alternator. The first one failed at around the 56,000 mile mark and was replaced. My friend and I had traveled about 60 miles N from sacramento to an area between alta and dutch flats and I had turned off the ac and put the windows down. I heard a strange crackling sound and I pulled over about a half a mile afterwards and shut off the engine, we smelled something burning and lifted up the hood. And that was the end of the 2nd alternator it had lasted about 1600 miles. The sparks that were shooting out of the alternator looked like a 4th of July sparkler, and we're stranded in the middle of nowhere. And I'm on the 3rd alternator with less than 59000 miles. Two months later maybe 600 more miles and water from the split in the wiper cowling runs into the car which went unnoticed for several days. I had standing water in the front passenger floor board and some in the rear as well. My repair estimate of almost $600, plus a rental car and not including pulling the carpet and heating the floorboard as rust prevention. My feeling is it's not over yet as I have read a lot of the other complaints from people with the same issue. I have noticed the engine has started to crank like it might not start. Ford posts record profits all the while refusing to acknowledge the financial hardship to loyal consumers who just wanted to own their pretty Mustang, and paid well for it. We are real, we have lives that are affected by this in real and meaningful us! listen to us, for every person that found their way to this web site and posted their complaint their are hundreds out there with the same problems who aren't even aware of this process. We haven't gone out and caused this damage to our cars, we are not at fault and we deserve remediation. Please help.

- Citrus Heights, CA, USA

problem #6

Jan 152014

Mustang 8-cyl

  • 720,000 miles
My car idles uncontrollable and jerks whenever it is driven. If I stop or drive at slow speeds it will just stop running on its own. I simply restart it and it will go, but it will keep jerking and idling.

- San Antonio, TX, USA

problem #5

Nov 152013

Mustang 6-cyl

  • 80,000 miles
While driving to work one chilly morning I could not feel any warm air coming from the heat or the windshield defroster. I had to return to home because the windows were fogging up and I had no heat. I drove another car to work that day. I later discovered the thermostat housing gasket had a slow leak and allowed most of the antifreeze to leak out. This was the reason the defroster was not working also the thermostat is no longer in contact with any fluid, only the plastic housing, and the temperature indicator never read much above cold while my engine is overheating internally due to low coolant. After replacing the thermostat housing and sensor I still smell antifreeze leaking from some where possibly the head gasket and have to top off the radiator more frequently. I believe this design, placing the temperature sensor in the thermostat housing, is a safety hazard. First off if you have a coolant leak the defroster will just stop working while your temperature reading will be normal or still cold. Secondly engine failure could occur, due to a false temperature indication, and could cause an accident while driving in traffic.

- Yorktown, VA, USA

problem #4

Nov 292013

Mustang 6-cyl

  • miles


2006 Ford Mustang. Consumer writes in regards to vehicle broke down and computer recall issues. The consumer was informed a new computer was needed for the vehicle, and Ford had recalled it due to a known issue. However, the part was on back order. After 2 months of not having her vehicle, the part was still on back order. Ford informed the consumer, to have the vehicle towed to a Ford dealership. The part neeed was an ECU, the main computer.

- Port Charlotte, FL, USA

problem #3

Feb 222014

Mustang 6-cyl

  • 126,600 miles
I was stopped completely. The traffic light changed to green in the intersection. I pressed the accelerator and it went all the way to the floor and stayed there. I flew thru the intersection at top speed with the brake pushed as hard as I could with no deceleration at all. I traveled approximately 150 yards wide open. I stomped the gas pedal and tried to get it to release with no luck. I finally turned the ignition off and jumped a curb to get it stopped just before I would have rear-ended a vehicle in front of me. Flat spotted 2 brand new front tires. It was terrifying! it cost me $721.32 to get the throttle body replaced. After I got home I google Ford acceleration problems and discovered there is a class action suit in 30 states against Ford for the same thing that happened to me. This problem needs to be corrected and I need a refund from Ford for the defective throttle body and 2 new tires.

- Marietta, GA, USA

problem #2

Jul 012013


  • 11,000 miles
I had to replace a defective throttle body due to repeated warning lights and "limp-home" mode events.

- Hayward, CA, USA

problem #1

Jul 282012

Mustang 6-cyl

  • 77,000 miles
Traveling to temple, Texas to visit mom for her birthday; I set my cruise at 70 mph as usual while traveling. I approached a slow moving vehicle, slowed down to make sure there was no one coming, turned my signal on and touched the gas pedal to increase speed. When I passed the vehicle and got back in my lane, my car continued to gain speed and was quickly up to 85 mph and increasing. I touched the brakes to slow it down and they would not hold or slow down the vehicle.I was terrified knowing there are a lot of curves on that particular road and possibly no way to avoid hitting someone. I looked for the safest place to pull over and saw an empty church parking lot and hoped I could get the car stopped in that area. By this time, I was applying the brakes as hard as I could, I managed to get it there but not before hitting a historical marker and snapping it off at the bottom. The impact seemed to slow me a little bit and I guided it between two big trees and managed to get the speed down to about 40 mph, slammed the gear shift in park while the engine was still racing and turned the key off. I waited about 5 or ten minutes and started the car and the engine was still racing at a very high rate of speed. I tried to start it again in a few minutes and the engine was still racing; I turned it off, called someone to come get me and called a wrecker to pick up the car. This was the most terrifying experience I had ever had in my 46 years of being licensed to drive a vehicle!

- Bryan, TX, USA

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