By Baxter Overman | July 22, 2025 in 
Washing your car is one of those tasks you may not care to do all that often, but if you never wash your car problems you’re way more likely to develop rust, pitting, fading, and premature aging of your car.
Most cars will begin to show clear signs aging after 15 years, but if you never wash your car you’ll likely notice paint issues within a few years.
In this blog, I’ll go into more detail and list 5 simple reasons why never washing your car is a bad idea. If you’re new to washing and detailing, check out our video course, Washing and Detailing for Beginners. We teach beginners how to learn how to wash their car the right way…without it feeling confusing.
Learn the basics of car care and gain confidence in your ability.
This video course unpacks the fundamentals of washing and detailing. From exterior cleaning and blemish removal…you’ll learn the secrets that will give you spotless pro-level results!
1. Your vehicle’s clear coat will degrade faster
Your vehicle’s clear coat is similar to skin on your body. It protects what’s underneath and is the first line of defense against dirt, acid rain, bird droppings, tiny rocks, and everything else.
Over time, if dirt and other substances aren’t removed, they’ll begin to eat away at your clear coat. While it looks harmless, dirt clings to a vehicle’s clear coat (like static electricity) and needs soap to loosen this bond and carry it away from time to time.
If it’s not removed, it begins to etch into the paint. Once a vehicle’s clear coat has been worn down to the paint layer, substances can then eat through the paint layer, reach the primer, metal…and all of a sudden you’ll start noticing rust spots.
2. Rusting and fading are accelerated
Washing and waxing a car is not just for fanatics, it actually helps protect against pitting and rust by adding an additional . Your clear coat also contains a UV coating that plays an important role in preventing the sun from fading your paint and needs to be protected.
The dangers of salt
Even if you’re not the type to keep your car spotless, removing salt buildup during the winter is a smart move. A quick rinse at a self-service bay or drive-through wash can help prevent long-term damage — especially to the underside and lower panels of your car.
It’s not just about keeping your ride looking good; it’s about protecting your investment. Road salt can lead to corrosion, which often starts in hidden spots like door jambs, wheel wells, and under trim — and that can mean costly repairs down the line.
One of the simplest ways to guard against this is by applying a layer of wax or paint sealant as I cover in this post. Think of it like putting lotion on your skin in the winter — it creates a barrier. Waxes and sealants form a slick, hydrophobic layer that helps repel salt, slush, and grime before they can bond to your paint or wheels.
3. Impaired visibility
Based on personal experience, neglecting to properly clean your windshield (especially in the winter) can also make visibility very difficult, especially when driving in rain or dense fog. You can actually get fined in some states like Michigan if your license plate is too dirty or if your back glass is obstructing your view.
Dirty headlights are another visibility risk that can occur if you neglect washing your vehicle. If you have a pretty old set of headlights, cloudy headlights present even more of a problem when the UV coating begins to wear down, causing cloudy headlights that can’t be restored by water alone. Check out this post I wrote for a step by step guide on restoring cloudy headlights back to clear (and what causes this).
4. Your resale value will take a hit
Not only can rust and pitting cause problems like rusted-out floorboards, they can also harm the resale or trade-in value of your vehicle. Studies have shown that something as simple as cleaning your engine bay under the hood can help you get top dollar at trade-in (since this is one of the areas many people will notice during evaluation).
According to Edmunds, a new car loses about a third of its value within a year, and pitted rims, early signs of rust, and exposed unwaxed paint can be like pouring money down the drain. This is something to consider if you are looking to trade or resell your car in a few years for a new model.
Ready to wash your car like a pro?
If you don’t know where to begin, you don’t have to drop a ton of money at car washes. You just need to learn some basics to start seeing results from home. Be sure to get our free car care cheat sheet, and check out our beginner course if you’re ready to up your game this weekend.
Learn the basics of car care and gain confidence in your ability.
This video course unpacks the fundamentals of washing and detailing. From exterior cleaning and blemish removal…you’ll learn the secrets that will give you spotless pro-level results!
