Good old Toyota "quality." I guess that's "normal" like a bunch of members have claimed about the rust on the undercarriage on new and near-new 5th Gen 4Rs. The reason there's rust is that Toyota is cutting corners. Consumers pay for these cut corners in more ways than one.
You are in Arizona so I'm not sure what rust issues you deal with but here in the "Rust Belt" of N/E Pa..... short of not driving from Nov - May.... you are going to get rust even if you are driving a Delorean. Best you can hope for is minimizing by busting butt ALL Winter.
Nothing is trully water proof or rust proof - resistant, maybe.
Note: No Bashing, just staing facts (-:
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