Which parts fail
Components named in complaints (automatic and manual transmissions, CVT, axles, driveshaft, 4WD/AWD).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2003 Mercury Sable owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2003 Mercury Sable. The contact stated while driving at an undisclosed speed, the vehicle lost motive power. The vehicle coasted to the side of the road and was towed to the residence. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 83,000.
Idriving under normal conditions on a city street in 2003 merc Sable with 33K miles. While in motion, the transmission fails with no forward or reverse working or any other mechanical warnings.( no transmission codes on obdii. I was immediately able to coast into a drugstore parking lot. Car towed to local Ford dealer. Dealer informed that the torque converter splines have failed and torque converter needs to replaced for $ 1726.00. Dealer repaired vehicle, replaced with Ford re-manuafactured torque converter. Searched intern net and found same numerous complaints of Ford torque converters spline failures. Based on the type and number of complaints this appears to warrant an audit of this safety problem. There are other reported complaints that vehicles were traveling on highways and suffered transmission failures while in motion without any warnings.
Tl* the contact owns a 2003 Mercury Sable. The contact stated while driving 30 MPH, the vehicle decelerated independently. The contact stated no warning light was illuminated. The contact parked on the side of the road. The vehicle was not drivable. The vehicle was towed to an independent mechanic and the contact was informed that the transmission needed to be replaced. The vehicle was not diagnosed nor repaired. A dealer was not contacted. The manufacturer had been informed of the failure. The failure mileage was approximately 30,000.
Tl* the contact owns a 2003 Mercury Sable. The contact stated that the transmission failed. While driving approximately 60 MPH, the vehicle lost acceleration. The vehicle was towed to dom's getty station (heightstown, nj 08520, phone [phone]) for diagnostic testing, which located the failure at the transmission input shaft and torque converter. The vehicle was not repaired. The manufacturer was notified. The failure mileage was 57,000.
In 2014,. My power train (transmission) stopped propelling my car. Several years earlier, my friend who owned a Mercury Sable (the same type car as I am writing to you about), had the same transmission failure while on an interstate highway. He had approximately the same mileage on his car that I had when our transmissions failed. This type of failure is dangerous yet the Ford motor co. Advised me there had not been a recall. Please advise.
Tl* the contact owns a 2003 Mercury Sable. While the vehicle was operated, it lost engine power without warning. The vehicle was towed to dom's getty service station (308 mercer st, hightstown, nj) where it was diagnosed as a transmission failure. The dealer was not contacted. The manufacturer was contacted and offered no assistance. The failure mileage was approximately 57,000.
Please see your report pe09033. My Mercury Sable uses the same transmission. And this week end me and my family almost got killed when on I-75 in the middle of a construction zone with concrete barriers on both sides my transmission died with no warning. This car has only 40000 miles on it and I changed the fluid as recommended at 30000 miles. The mechanic said that this was a catastrophic transmission failure and never should have happened at 40000 miles! The mechanic said to me you had no warning did you! I agreed. He said the torque converter had probably failed! The he told me it would cost about $2200 for parts and about $1100 for labor a grand total of $3300. I am an engineer so I know a little about engines and mechanical applications. This should never have happened. …
I started my car to take it for an oil change. With the engine warmed up I shifted into gear to go. Without any warning symptoms (no clunking, no grinding gears, no loss of fluids,...) the transmission decided to completely fail. The car would not go forward nor backwards as no gears were working. As this is now the third complete failure of the transmission on this car, I am trying to decide if I should try to get it repaired again. In all my years of driving, this is the only car that I have owned that has had transmission problems. There are known design flaws - the torque converter splines are not beefy enough and the vent fitting with a check valve on the trans housing malfunctions closed and causes the trans fluid to shoot back out of the dipstick tube, and there are other issues with this transmission as well... …
Vehicle accelerates on it's own. Have had multiple problems where I go to stop and car accelerates at a stop sign or light. I have almost rear ended multiple cars because of this. While going from a red to green light on a hill my Sable stalled and began to roll backwards, almost crashing into the car behind me, if it hadn't been for my quick reaction. Vehicle will idle very high, 2.5rpms at the lowest, while sitting in park after startup. After a 5 minutes it will sometimes drop down to 750-1000rpms, other times it will continue to idle high. During drive it will continually accelerate to around 40 MPH on it's own. When I brake it will idle high and lurch forward, until I'm forced to push the brake all the way to the floor. Then car will either continue to idle high or drop so low that it stalls. Usually I drive with two feet at lights or signs to be able to rev engine from stalking. …
I was heading to church. I turned on to another road when my car stopped going. It sounded fine but when I tried to push the gas to go, the car would not go. I've only had the car about 3 to 4 yrs, and have only put about 50,000 miles on the car. I had the car towed to eckenrod Ford in cullman, al. With a lot of persistence and a bulldog attitude, they are currently fixing my car. But, it is costing me money I don't have since I just had a baby. Who ,by the way, was with me when the car failed to drive properly (on a cold snowy sat. Morning). They know they have this problem, I don't know why they don't take care of it all together. I could have been in the middle of a busy highway like the last car I had when it did the same thing. Guess what, it was a 2000 Ford taurus with the same service bulletin as this car and had to be fixed but I didn't pay for it. …
Transmission complaints in other Sable years
Frequently asked questions
How common are transmission problems on the 2003 Mercury Sable?
NHTSA has 30 complaints about the transmission & drivetrain of the 2003 Mercury Sable, 15% of the model year's 201 complaints. The component named most often is automatic transmission (5 mentions).
Is there a recall for 2003 Mercury Sable transmission problems?
No. NHTSA lists no transmission & drivetrain recall for the 2003 Mercury Sable, though it has 3 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 2003 Mercury Sable transmission problems start?
Half of the complaints with a recorded mileage happened before about 70,000 miles, and 4% before 25,000 miles.
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.