The Best Time to Sell Your Car

When you sell your car matters almost as much as what you’re selling. Seasonal demand swings, mileage thresholds, model year rollovers, and broader market forces can all shift your car’s value by hundreds or even thousands of dollars. This guide breaks down exactly when to pull the trigger so you walk away with the best possible offer at King Auto in Joliet, IL.

1. Seasonal Trends: When Demand Is Highest

Used car prices are not static. Buyer demand rises and falls with the calendar, and understanding these cycles lets you time your sale for maximum return.

Spring (March - May) - Peak Season - Spring is widely considered the best time to sell a used car. Tax refund season puts cash in buyers’ pockets - the average federal refund runs around $3,000, and many people use it as a down payment. Warmer weather also brings more foot traffic to dealerships and more buyers browsing online listings. If you’re only going to time one thing, aim for spring.

Summer (June - August) - Strong Demand Continues - Families shopping before the school year, road trip season, and consistently good weather keep demand elevated through summer. Convertibles, SUVs, and trucks tend to see their highest prices in this window. Dealers are actively stocking inventory to meet the rush, which means competitive offers on trade-ins.

Fall (September - November) - Mixed Signals - New model year vehicles begin arriving at dealerships in the fall, which pushes down the perceived value of older used cars. However, this effect is partially offset by buyers who start shopping early for winter-capable vehicles. If you’re selling a sedan or economy car, try to beat the fall model year transition. If you’re selling a truck or SUV, fall can still work in your favor.

Winter (December - February) - Niche Opportunity - Winter is generally the slowest season for overall used car sales. However, there is a notable exception in the Midwest: AWD and 4WD vehicles see a significant spike in demand when the first major snowfall hits. If you’re selling a Subaru, a 4x4 truck, or any AWD crossover, listing it right before or during early winter can actually net you a premium.

Bottom line: Spring is the best time to sell for most vehicles. But if you have an AWD or 4WD vehicle in Illinois, early winter is your sweet spot.

2. Mileage Milestones That Affect Value

Mileage is one of the first things buyers and dealers look at. While value doesn’t drop linearly with every mile, there are specific thresholds where trade-in offers tend to take a noticeable step down. Selling just before these milestones can preserve hundreds in value.

• Before 30,000 miles - Your car is still considered “low mileage” by most standards. Many factory powertrain warranties are still active. Buyers see this as near-new, and values reflect it.
• Before 60,000 miles - This is a critical threshold. Many extended warranties and certified pre-owned (CPO) programs cap eligibility around 60,000-75,000 miles. Once your car passes this window, it may no longer qualify as CPO, which reduces the dealer’s ability to resell at a premium - and that directly impacts your offer.
• Before 100,000 miles - The six-figure mark is a psychological barrier for buyers. A car with 97,000 miles will typically fetch a meaningfully higher offer than the same car at 103,000. It’s not entirely rational, but it’s real. If you’re approaching 100k, don’t wait.
• Before 150,000 miles - Beyond 150,000 miles, the pool of interested buyers shrinks dramatically. Trade-in values drop steeply and many traditional dealerships become less interested. Selling before this point is advisable if value is your priority.

Pro tip: If you’re within 3,000-5,000 miles of a major threshold, act now. At the average American driving rate of 12,000-15,000 miles per year, you’ll cross that line in just a few months.

3. Age Milestones: Warranty and Depreciation Cliffs

A car’s age works alongside mileage to determine its value. There are specific age-based milestones where values tend to drop more sharply:

Before the factory warranty expires - Most manufacturer bumper-to-bumper warranties run 3 years or 36,000 miles. Powertrain warranties typically last 5 years or 60,000 miles (some brands like Hyundai and Kia go to 10 years/100,000 miles). A car still under warranty is more attractive to the next buyer, which means a better offer for you.

Before the 5-year mark - Depreciation is steepest in years one through three, then tapers somewhat. But at five years, most cars have lost 40-60% of their original value. Selling at years three or four captures more value than waiting until year five or six, when the curve has already flattened but price has dropped considerably.

Before the 10-year mark - Once a car is more than 10 years old, many lenders won’t offer financing on it. That eliminates a large portion of potential buyers. If your car is approaching 10 years, selling sooner rather than later preserves access to the financed-buyer market, where demand and prices are higher.

The intersection of age and mileage matters most. A 4-year-old car with 35,000 miles is in a very different position than a 4-year-old car with 80,000 miles. Track both numbers and sell before either one crosses a critical threshold.

4. Market Conditions and Inventory Shortages

Broader economic and industry conditions can temporarily override normal pricing patterns. The most dramatic recent example was the 2021-2023 period, when semiconductor shortages crippled new car production and sent used car prices to record highs.

While that extreme has normalized, the lesson remains: when new car inventory is tight, used car values go up. Here’s what to watch for:

• New car inventory levels - When dealers have fewer new cars on the lot, buyers turn to the used market. That increased competition for used vehicles drives prices up, benefiting sellers.
• Interest rates - Higher interest rates make new car payments less affordable, pushing more buyers toward used vehicles. Counterintuitively, rising rates can temporarily boost used car values.
• Gas prices - When gas prices spike, demand shifts toward fuel-efficient sedans and hybrids. When gas is cheap, trucks and SUVs gain ground. Selling a fuel-efficient car during a gas price spike is smart timing.
• Supply chain disruptions - Anything that slows new vehicle production - factory shutdowns, parts shortages, shipping delays - tightens used car supply and lifts prices.

How to check: You don’t need to track all of this yourself. Submit your vehicle information through our trade-in form and we’ll give you a real offer based on current market conditions - not a generic estimate.

5. Model Year Rollover Timing

Every year, manufacturers release the next model year of their vehicles, typically starting in late summer and running through fall. When the 2027 models start arriving on lots, every 2026 model - new or used - takes a perceived hit because it’s now “last year’s model.”

This matters for you as a seller in two ways:

• Sell before the new model year arrives. If you drive a 2024 Camry and the 2025 Camry hits lots in September, your car is suddenly two model years old instead of one. That distinction affects perceived value and trade-in offers. Selling in spring or early summer avoids this.
• Major redesigns hit harder. If the next model year brings a full redesign or a major facelift, the outgoing design looks older by comparison. Pay attention to automotive news for your specific make and model. A full redesign can accelerate depreciation on the prior generation significantly.

For most sellers, the practical advice is simple: if you’re planning to sell sometime this year, doing it before September is better than after.

6. End-of-Month and End-of-Quarter Dealer Behavior

Dealerships operate on monthly and quarterly sales targets. This creates predictable windows where they may be more motivated to acquire inventory and offer stronger trade-in values.

End of the month (last week) - Sales managers are pushing to hit monthly targets. If they need inventory to close deals, they may be more aggressive on trade-in offers. This effect is modest but real. If you’re flexible on timing, visiting in the last few days of the month can work in your favor.

End of the quarter (March, June, September, December) - Quarterly targets carry more weight. Manufacturers often tie bonuses and incentives to quarterly performance, creating stronger motivation for dealers to move vehicles. March is particularly powerful because it combines end-of-quarter urgency with peak spring demand.

End of the year (December) - Year-end is another strong window. Dealers are clearing current-year inventory and need used cars to fill gaps on their lot. While winter is generally a slower season, the urgency to close the year strong can benefit sellers who visit during the last two weeks of December.

Note: At King Auto, we base our offers on fair market data, not monthly quota pressure. You’ll get a competitive offer any day of the month when you visit us at 701 E Jackson St in Joliet.

7. Midwest-Specific Factors for Illinois Sellers

Selling a car in Illinois and the greater Midwest comes with regional factors that don’t apply in sunbelt states. Understanding these can help you time your sale more precisely.

Sell before salt damage accumulates

Illinois roads are heavily salted from November through March. That salt accelerates rust on the undercarriage, wheel wells, brake lines, and exhaust components. Every winter your car sits on salted roads, its condition deteriorates. If your car is still in good shape, selling before another winter of salt exposure preserves value. Late summer and early fall are ideal - your car has had months of salt-free roads and looks its best.

AWD and 4WD vehicles command a Midwest premium

In states like Illinois, Indiana, Wisconsin, and Michigan, all-wheel drive and four-wheel drive are not luxury features - they’re necessities for many drivers. Vehicles like the Subaru Outback, Toyota 4Runner, Ford F-150 4x4, and Jeep Wrangler hold their value better here than in warmer climates. If you’re selling one of these, you’ll get a stronger offer in the Midwest than you might expect from national valuation tools.

Winter tire and cold weather readiness

If your car comes with a set of winter tires, heated seats, heated steering wheel, or remote start, mention these when getting your offer. These features are worth more in the Chicago metro area and surrounding communities like Joliet than they are nationally. Dealers who buy for the local market value these features because their customers value them.

Illinois tax advantages for trade-ins

In Illinois, when you trade in a vehicle toward the purchase of another, you only pay sales tax on the difference between the new car’s price and your trade-in value. On a $30,000 purchase with a $12,000 trade-in, you’d pay tax on $18,000 instead of $30,000 - saving you roughly $1,500 or more. This tax benefit makes trading in at a dealership like King Auto financially advantageous compared to selling privately and buying separately.

Pothole and road condition damage

Midwest winters create potholes that damage suspension components, tires, and wheels. If you’ve made it through the winter without significant damage, selling in late spring captures that value before the next cycle. Conversely, if your car already has suspension issues from rough roads, factor repair costs into your expectations or sell as-is to a buyer like King Auto who handles that.

Local advantage: Because King Auto buys and sells vehicles right here in Joliet, we understand Midwest market dynamics better than national online buyers. Visit us at 701 E Jackson St, Joliet, IL 60432 for an offer that reflects local demand.