The car was at the dealership for a scheduled service. I was asked to go into the garage to look at the floor boards while the car was on the lift. The drivers side is so bad you can see the carpet. The passenger side is bad enough that they told me the car would not pass inspection without having both sides repaired by a body shop. I took the car to a body shop today and they were shocked at the excellent condition of the car vs the rotten floor boards. I've been doing plenty of internet searches today and found that this is a common problem.

- Easton, PA, USA

The contact owns a 2006 Nissan Altima. The contact stated that there were holes caused by extreme corrosion throughout the front driver's side floorboard. The vehicle was taken to the dealer for diagnosis. The technician stated that the floorboard would have to be replaced. The manufacturer was made aware of the failure. The vehicle was not repaired. The approximate failure mileage was 75,000. Updated 07/10/13

- Belle Mead, NJ, USA

Upon a routine oil change my mechanic noticed the huge amount of rust under my driver and passenger floorboards. The carpet inside can be seen. Upon researching this problem I found numerous complaints with this same problem where Nissan is doing nothing about it. This is a low mileage well maintained vehicle. Im shocked at the amount of rust in these areas. Normal wear and tear would not cause this. Nissan should be recalling these cars.

- Dallastown, PA, USA

Discovered rust under the driver's side, sheet metal is rusted out. Will need replaced. Unacceptable for a garage kept and well maintained vehicle that is only 7 years old!

- Pittsburgh, PA, USA

Floor boards rusted through under driver and from passenger seats (foot rest area) because of poor metal coating and poor drainage design. Rest of the car is perfectly fine. Car has very low mileage and no accidents. Having hole by the floor rest area is a safety hazard. When rust started car was still under warranty but dealer refused to check, now floor panels must be completely replaced. Reading other similar complains all over the web and personally knowing 3 other Altima owners with exact same issue, I am very surprised that no action take so far.

- Highland Heights, OH, USA

The floor pan on my 2006 Nissan Altima 2.5 sl is rusting and corroded underneath the passenger seat and could present a safety issue. I contacted my local Nissan dealership and they were unable to assist me because the car is out of factory warranty. I find it hard to believe that a car 6+ years old would be rusting that bad especially given that the car has been kept in my garage and well maintained. I have searched on the internet and found numerous 2002-2006 Nissan Altima owners that have the same issue. I believe this is a defect and Nissan should issue a recall and repair these vehicles.

- Lexington, KY, USA

I took my car in for routine maintenance and my mechanic noticed the floor board on the passenger side was rotted. The rotting is approximately 12' X 6' the front seat will eventually fall out of the car if it's not repaired soon and/or mold will start developing soon posing a serious health issue. Upon research of this issue, I found this is a common defect on Altima's from 2002-2006.

- Burton, OH, USA

Floorboard rust on passenger/driver floor. Rust due to improper undercoating and faulty drainage from drain holes. Rust under car only these areas. Rest of under carriage is spotless. Debris on road could come through floor.

- Lancaster, PA, USA

Driver side floor board rotted away due to rust. There are numerous complaints discussed on various websites that contain similar problems experienced with the 2006 Nissan Altima. Nissan has not recalled this vehicle.

- Portsmouth, NH, USA

The driver's side floor board has rusted through, which is very unusual for a vehicle of this age. According to various data online, the metal was not properly treated to prevent rust before installation. We are requesting that Nissan repair the rust at no charge to us.

- Pasadena, MD, USA

My Nissan had extensive rust damage to the left and right front floor pans. It was taken to a Nissan dealer. Nissan will not repair because car is over 80,000 miles. This damage did not happen in the last 4,000 miles. Filed a claim with Nissan, again they will not repair. I was told to send a letter to Nissan North America Consumer Affairs. I was told by a body shop that it looks like the car was not sealed properly right from the manufacturer and water entered through the floor pan seams and the plug under the car.

- Brunswick, OH, USA

The contact owns a 2006 Nissan Altima SE. The contact stated that a hole was found on the front passenger side of the vehicle undercarriage. The vehicle was not taken to the dealer. The manufacturer was not contacted. The vehicle was not repaired. The failure and current mileages were 71,000.

- Hamilton, OH, USA

The contact owns a 2006 Nissan Altima. The contact stated that the floor boards on both sides of the vehicle were completely corroded. The manufacturer was made aware of the failure who did not offer any assistance since the vehicle had surpassed the warranty mileage and the contact was the second owner. The vehicle was taken to several independent mechanics who stated a patch and repair with welding of a new floor board would be required. The vehicle was not repaired. The failure and current mileage was 142,000.

- Pickerington, OH, USA

Front passenger floorboard rusted through, with a hole approximately 4"X8" in size. I bought the car when it was a year old and it has been meticulously maintained and still looks new inside and out. It is undercoated, and has no other corresponding corrosion. The rust is not coming from underneath, nor from a leak in the interior (the carpets are dry), but from between the two sheet metal parts that make up the floor. As a mechanic, I know there is no form of maintenance that could have prevented this rust from occurring. As a safety issue, my state will fail this car for inspection because exhaust fumes can enter the interior of the car without the occupants knowledge, and the floor could continue rusting, compromising the integrity of the front passenger seat mountings.

- Cape Elizabeth, ME, USA

There is an excessive rust on the car, first reported when car was less than 5 years old: 1. flex connector between catalytic converter and the engine completely rusted 2. floor rust under driver seat first defect reported to Nissan and local dealer without any response - Nissan case [xxx]. second defect just discovered and is very common for 2005-2006 Altima - just search internet, but Nissan refuses to acknowledge it. In any cars 5 year old car with no accidents and with less than 27000 miles should not have these defects. Information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Highland Heights, OH, USA

The contact owns a 2006 Nissan Altima. The contact stated that the vehicle was being examined by an authorized dealer for routine maintenance and he was informed that the undercarriage was completely rusted and corroded. The vehicle was not repaired. The manufacturer was made aware of the failure and offered no assistance. The failure mileage was 99,200. Updated 03/05/12 updated 03/07/12

- Lakemoore, IL, USA

The contact owns a 2006 Nissan Altima. The contact stated that the floor boards were rusted. The manufacturer was notified of the failure, but denied any assistance with repairs to the vehicle. The vehicle was not repaired. The failure mileage was 84,000 and the current mileage was 85,000.

- White Bare Lake, MN, USA

The gasoline door is out of align preventing it to be closed properly.

- Canton, MI, USA

Around 6 months after the lease of my vehicle I noticed a hole on the floor, and any time I contacted the dealership and told them about the problem nothing was ever done. I was told that it was my car. Therefore, my problem. It has been almost a year and a half and the hole has gotten bigger. I may one day die in that car due to the heel of my shoe getting stuck in that hole, because I may not be able to get my foot out from it in time to brake, or my foot may get caught in there.

- Fresno, CA, USA