Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.


pretty bad
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
4,850 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.

2004 Nissan 350Z transmission problems

transmission problem

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2004 Nissan 350Z Owner Comments

problem #2

Jun 132004

350Z 6-cyl

  • Automatic transmission
  • 8,000 miles


Large thuump noise developed around 8000 miles on automatic tranmission of my 2004 350Z. It has been taken to 2 dealers. Both say it is perfectly normal. We test drove 4 other 350Z's and none of them to what my car does. The dealer refuses to fix it and Nissan Corp. Says they will help, but continue to ignore my calls and hang up on me.

- Miami, FL, USA

problem #1

Jun 092004

350Z 6-cyl

  • Automatic transmission
  • 1,700 miles
I purchased a 2004 Nissan 350Z on 3/31/04. Since then the transmission has, on several occasions, gone into what the manufacturer calls "fail safe" mode, which means that if it detects a problem it will immeiately and without warning slam down from whatever gear you are in to first gear. This has happened to us on a highway twice, and the car came to a sreeching halt, nearly casuing an accidant. The car went from 5th gear to 1st without warning to us or to those behind us, and it did this suddenly, bringing the car to a virtual halt as if the brakes locked. The manufacturer has been unresponsive, and the dealer says that this is a deliberate design in the transmission and cannot be changed, and it kicks in even if the "error" it detects is false. This dangerous design is in all of these cars(automatics) and is inherently dangerous, especially as it seems to happen at high speeds on the highway and there is no warning to us or the car behind us.

- New York, NY, USA

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