What Happens If You Let Your Car Sit Too Long?

August 8, 2025

Brian Hunnicutt

What Happens If You Let Your Car Sit Too Long?

What Happens If You Let Your Car Sit Too Long?

Starkville, Columbus, and West Point Drivers: What Your Parked Car Isn’t Telling You

Sometimes life changes and your car doesn’t get used as often. Maybe you’re driving less for work, relying on another vehicle, or letting your teenager’s car sit while they’re away. Whatever the reason, one thing is certain:

A parked car may look fine—but under the surface, it’s falling apart.

At William Wells Tire & Auto, with locations in Starkville, Columbus, and West Point, we regularly see the damage that happens to vehicles that sit too long without being driven. Most of it is silent—until the day it refuses to start, fails to stop, or triggers costly warning lights.

If your vehicle’s been parked for weeks—or months—this guide is for you.


1. The Battery Will Drain and May Permanently Die

Your car battery powers more than the ignition. Even when off, it’s feeding low-level systems like:

  • Clock memory

  • Security features

  • Key fob systems

  • Computer modules

This is called parasitic drain, and it’s always happening. When your car isn’t running to recharge the battery:

  • 2 weeks: Voltage drops

  • 3–4 weeks: Your car might not start

  • 6–8 weeks: Sulfation sets in—and the battery may be permanently damaged

In Mississippi’s humid summers and cold, damp winters, battery health deteriorates faster. We’ve had drivers from Columbus and Starkville come in with a no-start after just 3 weeks of inactivity.


2. Tires Begin to Flatten, Crack, and Fail

Tires lose about 1–2 PSI per month, even in normal conditions. When a car sits still:

  • The weight flattens one part of the tire

  • Flat spots form, causing vibration and rough handling

  • Rubber begins to dry rot and crack—especially in sunny or uneven parking areas like driveways or gravel lots

We often see customers from West Point or rural areas come in thinking they just “need air,” only to discover that tire replacement is the safer option.


3. Fluids Break Down and Damage Internal Systems

Your car relies on circulating fluids to cool, protect, and lubricate parts. When it sits:

  • Oil becomes acidic from moisture exposure

  • Brake fluid absorbs water, which causes internal corrosion

  • Coolant chemically separates and can cause overheating

  • Transmission fluid thickens, affecting shift quality and wear

The longer your vehicle sits without use, the more these fluids become a threat instead of a safeguard—especially in the variable weather patterns across Mississippi’s Golden Triangle region.


4. Brakes Begin to Rust and May Seize

In humid climates like ours, even a few days of rain or morning condensation is enough to start rusting your brake rotors.

  • After a few days: Surface rust develops

  • After a few weeks: Pads can fuse to the rotors

  • After a few months: Calipers can seize, and the whole system may need replacement

When a customer from Columbus or Starkville tells us their parked car “makes a grinding noise when I finally drove it,” this is often the reason.


5. Rodents May Be Living Under the Hood

Rural and suburban areas like West Point, Oktibbeha County, and Lowndes County are prime habitat for mice, rats, and squirrels. When your vehicle sits for long stretches, it becomes a warm, quiet nest.

Rodents often:

  • Chew wiring harnesses, causing sensor failures or full no-start conditions

  • Build nests in air filters, heater boxes, or fuse compartments

  • Urinate and defecate under the hood, causing corrosion and foul odors

Rodent damage can cost $1,000 to $5,000+ to repair—and may not be covered by insurance.


6. Gasoline and Oil Go Bad

Many drivers don’t realize that gas has a shelf life.

  • After 3 months, gas starts to oxidize

  • It loses volatility, meaning it burns poorly

  • Moisture gets absorbed (especially in ethanol blends), which can rust fuel system components

  • Injectors and pumps get clogged with varnish

Likewise, old oil becomes corrosive, even if the engine hasn’t been started. That oil can begin breaking down gaskets, seals, and internal components.


7. Time-Based Maintenance Still Counts

Some drivers say:

“I haven’t driven it, so it doesn’t need service yet.”

But many automotive systems age with time, not mileage.

  • Oil changes are recommended every 6 months, regardless of mileage

  • Brake fluid absorbs water every day it sits

  • Coolant and transmission fluid degrade over time

  • Belts and hoses dry out and crack—even if unused

We’ve had many Starkville and Columbus-area drivers bring in low-mileage cars that needed major work, simply because the vehicle sat too long and missed service intervals.


Real Cost of Letting a Car Sit Too Long

Problem

Repair Estimate

Battery Replacement

$200–$350

New Tires (set of 4)

$600–$1,200

Brake Replacement

$800–$2,000

Rodent Wiring Repair

$1,500–$5,000

Fuel System Cleaning

$300–$900

Engine/Transmission Repair

$3,000–$7,000+

These aren’t worst-case scenarios—they’re everyday outcomes we see at our shops.


What To Do If Your Car Has Been Sitting

If your vehicle has been parked for a few weeks—or longer—here’s what we recommend:

Battery and charging system test
Tire inspection (pressure, flat spots, cracking)
Brake system check for rust or sticking
Rodent inspection under the hood and in the cabin
Fluid condition inspection (oil, coolant, brake, transmission)
Fuel system inspection if sitting over 90 days
Full vehicle health and safety inspection


Why Northeast Mississippi Trusts William Wells Tire & Auto

At William Wells Tire & Auto, we’re proud to serve the communities of Starkville, Columbus, West Point, and the surrounding counties with the kind of honest, professional service that builds long-term relationships—not just repair orders.

Whether your car’s been sitting due to travel, a lifestyle change, or seasonal downtime, our expert team is ready to help you bring it back safely—and affordably.


Don’t Let Your Parked Vehicle Become a Breakdown

Silent damage builds up fast. Let our team at William Wells Tire & Auto inspect your vehicle, diagnose hidden problems, and help you get back on the road with confidence.

📍 Visit Us at Any of Our Locations:
Starkville – 12919 MS-182 | (662) 268-4081
Columbus – 1625 Gardner Blvd | (662) 240-2414
West Point – 93 W Broad St | (662) 495-8558
🌐
Book online at williamwellstireandautorepair.com

For more information please watch the video

https://youtu.be/IgOQi3adMCE


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