I have a 2014 Toyota Corolla I bought it in 2018 to keep KMs off my Saab and recently Jaguar. In spring 2020 I hit a pheasant (or hitchhiker I didn’t stop) along the driver side rear door. Shortly after I slid off the road in a snow storm causing damage to the fender/rocker area. Though I intended to fix it I never got around to it. Over 3 years later it’s nothing more than surface rust, every couple months I scrape some off with my key and one scratch shows clear metal. I live near the ocean in salt covered road Canada surrounded by cars rusting out within 6 years, sometimes so bad could watch my Saab rust before my eyes. So what’s Toyota doing that’s other manufacturers aren’t?