Interior & Exterior Exterior Modifications ; Interior Modifications ; Lighting ; Gauges and More

Rust Spot Cause

Old Jan 18, 2026 | 10:25 AM
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Rust Spot Cause

Hi,

Original owner of a 2008 G35X Sedan. 163K miles. Love the car and have been putting money into the car for repairs.

One annoying issue that I have is I have a rust spot bubbling up on my rear quarter panel. The rust bubble is located where the red dot is in the picture. The picture is of the left rear quarter panel, the rear bumper is to the right and the edge of the rear door is on the left. On my vehicle it's on the right rear quarter panel. Is there a blocked drain of some kind that's causing the rust? I'd like to address it. TIA

 
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Old Feb 22, 2026 | 01:53 AM
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Bump
 
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Old Feb 25, 2026 | 10:24 PM
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It’s just a common rust point on cars that see salt on occasion. It will need body shop attention to stop unfortunately.
 
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Old Feb 26, 2026 | 08:41 PM
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Originally Posted by Urbanengineer
It’s just a common rust point on cars that see salt on occasion. It will need body shop attention to stop unfortunately.
I'm trying to find the root cause. Is there a hole somewhere that is causing water to collect there and rust out the panel?
 
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Old Feb 28, 2026 | 10:10 AM
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From: The 'shnall
G35 Sport
Originally Posted by geronimomoe
I'm trying to find the root cause. Is there a hole somewhere that is causing water to collect there and rust out the panel?
Its a small spot that collects salt and debris during the winter, causing it to rust. No hole, but the lip from the fender and the grommet for the bumper areas that will collect salt water/slush. Oil spraying the car helps, but most cars in areas that use salt will eventually start rusting in that location.
 
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