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2009 BMW 335 Engine And Engine Cooling Problems, Complaints and Defects

Issue ID	1018811
Internal NHTSA #	10549352
Manufacurer	BMW of North America, LLC
Brand	BMW
Model	335
Model Year	2009
File date	03/09/12
Component	ENGINE AND ENGINE COOLING
Product type code	VEHICLE
Description of the problem	This is in reference to my car 2009 335d purchased in august 2009 from momentum bmw in houston, tx. I bought this vehicle primarily for its advertised fuel economy of city/hwy 23/36 combined with superb performance. I primarily use this car from highway driving from san antonio to houston, approx. 150 miles each way. I go to houston twice a month to visit my two sons who are doctors. I have put on an average of 10,000 miles per year, and today have approx. 40,000 miles. I also purchased bmw extended warranty of 7 yrs./70k miles. Before all the major software/firmware updates, i used to routinely get around 36-38 mpg on the highway at 70mph and since almost 1 year or more, i average like 28-30 mpg on the highway. It has dropped by more than 6-8 mpg before these updates for both highway and city mpg. Being an engineer by training, this is a statistical average for over a year. I have mentioned many times since 2012 to present to the bmw dealer in san antonio that my fuel economy has suffered substantially. I also had the shop foreman at bmw dealership verify by test driving for almost 40 minutes each way on the highway, that the max. I got was 30. 6mpg with average speed of 65mph. From day one, i have only put either shell or chevron diesel fuel in this car. This car has always been maintained by the bmw of san antonio. I am very disappointed that i no longer can get this fuel economy and bmw dealer have exhausted their efforts in fixing this issue but could not resolve it. I never had this happen to any of my other german cars that they still give me the same fuel economy of when i first bought them but in fact in most cases the fuel economy has improved after the engine break in period. Foreman states that it needs decarbonization but bmw does not want to pay for it and it is quite expensive.
Vehicle Mileage at Failure	35000
Number of Occurences	1
Source of the issue	NHTSA WEB SITE
City and State	GARDEN RIDGE, TX
VIN pattern	WBAPN73569AXXXXXX
Was vehicle invloved in a crash?	N
Was vehicle involved in a fire?	N
Was incedent reported to police?	N
Was medical attention required?
Was part original equipment?
No. of injured persons	0
No. of fatalities	0
Date of purchase	07/08/26
Was original owner?	N
Anti-lock brakes	N
Cruise control	N
Number of cylinders	6
Drive train type
Transmission type
Vehicle speed	65
DoT tire identifier
Tire size
Location of tire code
Type of tire failure code
Was defective tire repaired?
Date of manufacture
Type of child seat code
Type of restraint
Dealer's name
Dealer's telephone number
Dealer's city
Dealer's state code
Dealer's ZIP code

What is Recall?
A recall is when a product is removed from the market or a correction is made to the product because it is either defective or potentially harmful.
What is Failure?
Failure is the state or condition of not meeting a desirable or intended objective, and may be viewed as the opposite of success. Product failure ranges from failure to sell the product to fracture of the product, in the worst cases leading to personal injury, the province of forensic engineering.
What is Defect?
Non-conformance of a car component with the specified requirements, or non-fulfillment of user expectations, including the safety aspects.

Last decoded VIN:

WDD2130041A557706 WDCTG4GB1FJ098668 WDBUF54JX6A880447 1C4RJFCG9LC363190 W0L0TGF69X5287820 JTMHV01J204241255 1C4RDHAG1HC896695 WVWZZZ3CZHE146212 KMHSH81UBAU529311 WF0MXXGCDM4L77672 MNAUMFF50BW100928 JS1C5111100117101

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2009 BMW 335 Engine And Engine Cooling Problems, Complaints and Defects, Recalls and Failures

2009 BMW 335 Engine And Engine Cooling Problems, Complaints and Defects

What is Recall?

What is Failure?

What is Defect?