AAA Warns Drivers: Winter Road Salt Can Cause Hidden, Costly Vehicle Damage
DEARBORN, Mich., (February 18, 2026) — You might not see it, but something on winter roads right now could be slowly destroying your vehicle. Road salt, applied to improve traction on icy roads, can also accelerate rust on your vehicle’s undercarriage.
“Salt damage is easy to miss because it happens underneath the vehicle,” said Adrienne Woodland, spokesperson for AAA The Auto Club Group. “Even with today’s corrosion-resistant designs, the undercarriage is still vulnerable. And because corrosion is considered normal wear and tear, it’s usually not covered by insurance.”
Rust can weaken structural parts, brake lines, and suspension systems, while also discoloring or chipping paint. Routine washing is an inexpensive way to prevent damage and avoid costly repairs.
How Road Salt Affects EVs
Electric vehicles face unique risks because battery packs, cooling lines, and electronics sit low in the chassis and are more sensitive to corrosion. High‑voltage connectors, charging ports, and aluminum battery housings can degrade faster than similar components on gas-powered vehicles.
EV owners can reduce winter damage by:
- Rinsing the undercarriage regularly
- Applying corrosion-inhibiting coatings
- Keeping charging ports dry and free of salt
- Inspecting sensors and wiring
- Parking indoors when possible
“Winter road salt is one of the most overlooked threats to EV longevity,” Woodland said. “Protecting the battery and electronics is essential.”
AAA Tips to Prevent Salt Damage
- Wash regularly: At least every two weeks; more often after driving on heavily salted roads.
- Prioritize the undercarriage: Use car washes with underbody sprays.
- Rinse first: Flush off loose salt before washing to protect the paint.
- Apply wax: A fresh coat before winter helps shield paint from salt and moisture.
About AAA – The Auto Club Group
The Auto Club Group (ACG), named a 2026 Forbes Most Trusted Company in America, is the second-largest AAA club in North America, with more than 13 million members across 14 U.S. states and two U.S. territories. ACG and its affiliates provide members with roadside assistance, insurance products, financial services, travel offerings and more. ACG is part of the national AAA federation, which serves more than 66 million members across the United States and Canada. AAA’s mission is to protect and advance freedom of mobility and improve traffic safety. For more information, download the AAA Mobile app, visit AAA.com, and follow us on social media.
