Three problems related to underbody shield have been reported for the 2003 Nissan Altima. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Nissan Altima based on all problems reported for the 2003 Altima.
The contact owns a 2003 Nissan Altima. The contact stated that while driving 55 mph, a scraping noise emitted from the vehicle. The contact stated that after inspecting the vehicle, she noticed that the floor board was hanging from under the vehicle and the under body was rusted out. The vehicle was not taken to the dealer for a diagnostic testing. The manufacturer was not notified of the failure. The approximate failure mileage was 110,000.
I took my 2003 Nissan Altima to get a PA inspection and was shocked that the floor panels on the driver and passenger side of the car had rusted out. There is no other visible rust on the car and I feel this is a design flaw which should be remedied at Nissans expense.
Underbody of passenger side of car with large hole(20 by 20) in it discovered when 4 wheel alignment was being done. This affects the safety of person sitting in that seat since the seat base is damaged and the seat with the passenger buckled in that seat would propel out the windshield in an accident. Hundreds and hundreds of safety concerns are noted online during a search of Nissan Altima underbody holes/rust. I think this is extremely unsafe and it has been noted over and over in complaints online and nothing has been done. There are no safety bulletins, no recalls, etc. My shop said this is the second one recently and when I called the Nissan dealer he said they have another car just today that also has this problem. It's over $1000 to repair and no part is available to replace that/ the seat has to be removed, the carpeting removed, the area welded with a piece of metal , etc. Etc.