2007 Mercedes-Benz S550 Engine Problems

“I was driving my S550 and came to a red light. I stopped at the light and when it turned green, I took my foot off the brakes and pressed the accelerator, but there was to response to pressing the accelerator. The car rpms were increasing but the vehicle was crawling at less than 5mph. This LED to me pulling over and parking the vehicle and turning it off. I waited 5 minutes and then restarted it and it began to work normally. …”

“My last two vehicles have been a 2007 mercedes S550. My first one operated well until the last 6-months that I had it. During that time, I had six visits and $5000+ in repairs, before a freak flood totaled the car. I used the insurance money and purchased a second car, identical to the first. I have not even made the first payment, and the car has been diagnosed with a gasket leak between the upper / lower intake manifold. This is a molded gasket and is not field replaceable. The entire manifold must be replaced at $2000. …”

“Balance shaft/idle gear material wore out causing timing chain to become loose and engine to jump timing while driving. Engine locked up and died while going down the highway! Expensive repair that mercedes benz knows about!! They have an internal memo with a list of VIN numbers that have the faulty idler gear that wears out prematurely but won't recall the product because it usually wears out just after warrantee period! Something must be done!”

“I brought a car from a car dealer in tampa Florida and when i got the car i noticed that the car would not pickup speed after pressing the gas pedal and it was asking me to turn off the engine or it will fail . also when i tried to put in coolant. I seen a milky substance that was coming out of the hoses and in the overflow tank of the coolant reservoir which indicates issues with the heads or head gasket . also the title i got says salvaged which i asked if there was anything wrong with the car and the car dealer told me no . never disclosing that the car has been salvaged . …”

“The contact owns a 2007 Mercedes-Benz S550. While at a stop light, the vehicle shut down and lost all power. The vehicle restarted and was taken to a dealer who was unable to diagnose the failure. The failure recurred. The contact called the dealer and was advised to tow the vehicle to the shop. The dealer was unable to diagnose the failure, but kept the vehicle for further observation. The manufacturer was not made aware of the failure. The failure mileage was approximately 70,000. The VIN was not provided.”