2010 Mercedes-Benz E-Class Engine

fast acceleration then slow down goes into limp mode . happens when passing a car or taking off fast like entering into traffic . very dangerous. will be calling mercedes benz tomorrow. bought car used approximately 4 months ago. thanks

does the engine in this car have a correct balance shaft?

DURING COLD ENGINE STARTING, A KNOCKING CAN BE HEARD IN THE ENGINE. THE KNOCKING LASTS APPROXIMATELY EIGHT ROTATIONS, AND THEN STOPS.

THE VEHICLE HAS ONLY 50K MILES. I AM THE ONLY OWNER AND I PURCHASED THE VEHICLE IN 2010 (NEW) WITH ONLY 9 MILES. I HAVE COMPLETED ALL REQUIRED SERVICES TO DATE. IN MAY I HAD THE AB SERVICE COMPLETE AND THE CHECK ENGINE LIGHT WAS ON. I WAS TOLD IT WAS LIKELY DUE TO THE NEED OF HAVING THE SPARK PLUGS CHANGE BASED ON TIME NOT MILEAGE. NOW I AM BEING TOLD THE OUTCOME OF THE CHECK ENGINE LIGHT ON IS DUE TO A MISFIRE CODE FOR CYLINDER ONE, FAILED SDS COMPRESSION TEST. CYLINDER ONE FAILED CYLINDER LEAK DOWN TEST AT 80%. EXHAUST VALVE SEATS FAILING CAUSING EXHAUST VALVES NOT TO FULLY CLOSE. WE ARE UNABLE TO REPAIR THE VALVE SEAT ON CYLINDER HEAD AND IT IS NECESSARY TO REPLACE PASSENGER SIDE CYLINDER HEAD. ONLY CAMSHAFTS AND CAM ADJUSTERS CAN BE TRANSFERRED. NEW HEAD WILL COME WITH NEW VALVES. THERE ARE REPEATED REPORTS FROM OTHER OWNERS WITH THIS SAME ISSUE-RESULTING IN ENORMOUS REPAIR COST. THIS IS A DEFECT AND MERCEDES-BENZ NEED TO CONSUME THE COST, ESPECIALLY SINCE THE VEHICLE HAS LESS THAN $50K MILES.

KNOCKING NOISE DURING VEHICLE START-UP DURING VEHICLE START-UP, 2 SEC KNOCKING NOISE, THEN NOISE STOP. DROP VEHICLE OFF, ADVICE SERVICE REPRESENTATIVE TO THE ISSUE. AFTER THERE INSPECTION, SERVICE REPRESENTATIVE INFORM ME THIS WAS NORMAL, THE NOISE I'M HEARING IS THE ENGINE IS PUSHING THE OIL FASTER TO THE CHAMBER, THIS PROCESS PREVENT VEHICLE WARM-UP WAIT, ASK TO SPEAK WITH THE SERVICE SHOP MANAGER, STILL WAITING. YES, STILL HAVE THE KNOCKING NOISE DURING VEHICLE START-UP.

WAS TOLD TO REPLACE THE SERPENTINE BELT TENSIONER. ASKED WHY THE BELT TENSIONER NEEDS TO BE REPLACED WAS TOLD THAT THEY GIVE OUT AND IF YOU ARE DRIVING IT COULD CAUSE AN ACCIDENT. THIS IS BEFORE THE REPLACEMENT CYCLE FOR THE BELT (90K MILES). SO MANY PEOPLE WON'T KNOW THIS WILL HAPPEN CREATING ACCIDENTS THAT COULD BE AVOIDED. *JS

THIS COMPLAINT IS FOR A 2010 BMW 535I XDRIVE. I WENT INTO THE GARAGE TO START MY CAR THIS MORNING WEDNESDAY, 10/28/09 AND THE CHECK ENGINE LIGHT CAME ON AND THE CAR STARTED SHAKING. I MOVED THE CAR OUT OF THE GARAGE AND SHUT OFF THE ENGINE TO SEE IF IT WOULD RESET, I STARTED THE CAR UP AGAIN AND THE CHECK ENGINE LIGHT WAS STILL ON AND THE CAR CONTINUED SHAKING, I DROVE THE CAR ABOUT 50FT TO SEE IF IT WOULD STOP SHAKING AND LIGHT WOULD GO OUT BUT IT DID NOT. I DROVE THE CAR BACK INTO THE GARAGE AND WAITED ABOUT A 1/2 HOUR TO TRY IT AGAIN IT WAS THE SAME PROBLEM. I CONTACTED THE SERVICE DEPARTMENT WHOM ADVISED ME TO CONTACT ROADSIDE ASSISTANCE TO HAVE THE CAR TOWED IN BECAUSE IT SHOULD NOT BE DRIVEN. I HAD THE CAR TOWED TO OPEN ROAD BMW WHERE I HAD PURCHASED THE CAR FROM TWO (2) MONTHS AGO. I SPOKE WITH THE SERVICE ADVISOR AND ASKED HAD ANYONE ELSE EXPERIENCED THIS PROBLEM HE SAID YES ON THE 2009 AND 2010 MODELS IT SEEMS TO BE THE FUEL PUMP. THERE SEEMS TO HAVE BEEN A PROBLEM WITH THEM, BUT ONCE THEY HAVE BEEN REPLACED THAT SEEMS TO HAVE FIXED THE PROBLEM. I AM WAITING TO HEAR BACK FROM THE SERVICE DEPARTMENT. *TR