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definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
20,500 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.

2003 BMW Z4 fuel system problems

fuel system problem

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2003 BMW Z4 Owner Comments

problem #2

Dec 312008


  • 41,000 miles


12-31-08 my car failed to accelerate while I was traveling on the interstate between 55-65 miles PE hour. I was trapped in the middle lane but was able to cruise to the outer land but was unable to drive my car to the side of the road before the engine turned off. Tafter 10 =15 minutes my car started, and the Florida state trooper assist me to the next exit. After I had to have my car towed to my home 45 miles away.... it cost me $197 but my extended warranty paid 70 dollars of the full cost..... BMW have a recall on certain 2003 Z4 for the same problem but has refused to recall my car after it is having the same problem.

- Miami, FL, USA

problem #1

Jun 302008


  • miles
I own a 2003 BMW Z4 and have had two fuel pumps and filter replacements. The car has approximately 21,500 miles. The first failure was June 2008. The second failure occurred within 1,000 miles of the first replacement. BMW dealer maintains it is ethanol in the premium gas I buy, which is from chervron. The fuel pump is supposedly subject to failure if the ethanol content exceeds 10% or more. I had the chevron fuel tested and it falls within the 10% limit. All fuels in the pacific northwest contain up to 10% ethanol. I find it hard to believe that BMW cannot design a fuel pump to handle the fuels sold in the U.S. I supect the fuel pump design is faulty. Anyway I am out about $2000 and I am afraid to drive the car very far from town.

- Kennewick, WA, USA

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