Why do vehicles rust?

Rust on your vehicle is usually caused by a combination of moisture, oxygen, and road salt — all of which are super common in places like Manitoba. Here’s a breakdown of why your car might be rusting and what you can do about it:

🌧️ 1. Exposure to Moisture

  • Rain, snow, and humidity provide the moisture rust needs to form.
  • Even washing your car and not drying it properly can leave moisture trapped in seams or under trim.

🧂 2. Road Salt in Winter

  • Salt is great for melting ice — but terrible for metal.
  • It accelerates the rusting process by lowering the activation energy for corrosion.
  • Salt gets into tiny cracks and scratches and stays there, especially if not washed off regularly.

🧹 3. Scratches, Chips, or Dents

  • When your paint is damaged, bare metal is exposed.
  • Without that protective paint layer, moisture and oxygen can go straight to work.
  • Small rock chips or door dings can become rust hotspots fast.

🔩 4. Poor Drainage or Trapped Moisture

  • Clogged drain holes (especially in doors or rocker panels) can trap water.
  • If water can’t escape, it pools and speeds up rusting from the inside out.

🏗️ 5. Age & Wear

  • Older vehicles, or ones that haven’t been maintained, naturally develop more wear and tear.
  • Older undercoatings may have worn off, exposing the metal underneath.

🧪 6. Substandard or Aftermarket Repairs

  • If collision repairs were done without proper sealing or OEM parts, water may seep in behind panels or through poor welds.

👎 7. Lack of Protection

  • No rustproofing or undercoating
  • Not washing your car in winter (especially the undercarriage)
  • Not addressing chips or scratches early

🚫 How to Fight It:

  • Wash regularly, especially in winter
  • Touch up paint chips ASAP
  • Get undercoating or rustproofing (especially in places like Manitoba)
  • Inspect drains and seams
  • Dry your car well after washing