By MyAutoResource Editorial Team · Reviewed by Steven Sun · 5 min read · Updated August 13, 2026
- Manheim’s wholesale auction index (MUVVI) was down 0.6% from June but still up 2% from a year earlier as of mid-July 2026, and both numbers matter for reading the market correctly.
- On a $27,070 used car, that 2% year-over-year gain works out to roughly $541 more than a comparable car cost a year ago, while the monthly dip is worth about $162.
- New-vehicle average transaction price held at $49,758 in June 2026, up less than 1% year over year, while subcompact SUV sales volume jumped 23% as buyers downsize to hit a target payment.
- A falling month-over-month auction reading inside a rising year-over-year trend is a short seasonal window where buyers have real negotiating leverage.
In the second week of July 2026, wholesale used-car values dropped 0.6% from June, the kind of headline that makes a buyer waiting on a used SUV think prices are finally falling. Look at the same report a different way, and those same values are still running 2% higher than a year earlier. Both numbers are real. Reading only one of them is how buyers misjudge whether now is actually a good time to buy.
That report is auction data: the prices dealers themselves pay when they buy inventory. It moves before retail prices do, which makes it one of the few numbers a shopper can use to see where the lot is headed before the sticker changes.
What “Auction Data” Actually Means
Most of the used cars on a dealer’s lot did not come from a trade-in at that same store. They came from a wholesale auto auction, where dealers bid against each other for inventory the same way you’d bid at any auction, just with cars instead of collectibles. Manheim, the largest operator of these wholesale auctions in the country, tracks what dealers actually pay across thousands of these transactions and publishes the result as the Manheim Used Vehicle Value Index, or MUVVI.
This is not a survey or an estimate. It is a direct read on wholesale prices, adjusted for the mix of vehicles sold, their mileage, and normal seasonal patterns, so a July index reading is genuinely comparable to a January one. When dealers pay more at auction, that cost eventually shows up in the price on your side of the negotiation. When they pay less, it shows up there too, just with a lag.
What the Numbers Say Right Now
As of mid-July 2026, the MUVVI stood at 211.5, according to Cox Automotive, the firm that owns and operates Manheim. That reading was down 0.6% from June on an adjusted basis, which strips out normal seasonal swings and shifts in vehicle mix, but still up 2% compared to July 2025. On a raw, non-adjusted basis, the drop looked steeper: down 1.9% for the first half of July versus June, though still up 2.4% year over year. Cox Automotive’s own chief economist, Jeremy Robb, frames the July dip as ordinary summer depreciation. He describes it as the market “normalizing” after a stronger-than-usual spring bounce, not a sign that demand is cooling in any lasting way. For context, a full-month July has historically moved down about 0.7% on a non-adjusted basis, so this year’s dip is close to the normal seasonal pattern, not a break from it.
| Metric | Reading | Comparison period |
|---|---|---|
| Manheim Used Vehicle Value Index (adjusted) | 211.5 | Mid-July 2026 |
| MUVVI month-over-month change (adjusted) | -0.6% | vs. June 2026 |
| MUVVI year-over-year change (adjusted) | +2.0% | vs. July 2025 |
| New-vehicle average transaction price | $49,758 | June 2026 |
| Subcompact SUV average transaction price | $31,113 (sales volume +23% YoY) | June 2026 |
The New-Vehicle Side Tells a Related Story
New-vehicle prices are not standing still either, just moving more slowly. Kelley Blue Book and Cox Automotive put the new-vehicle average transaction price at $49,758 in June 2026, up less than 1% year over year and still below the $50,609 peak set in December 2025. Inside that flat headline number, the subcompact SUV segment jumped 23% in sales volume, a sign that buyers are not waiting around for sticker prices to drop across the board. They are shifting into smaller, cheaper vehicles to hit a monthly payment they can afford right now.
The Math: Translating an Index Move Into Dollars
Percentages on an index are hard to picture until you put a real price next to them. Experian’s State of the Automotive Finance Market report puts the average amount financed on a used car at $27,070 in Q1 2026. Apply the MUVVI’s 2% year-over-year increase to that figure and you get roughly $541 more than a comparable car would have cost a buyer a year ago. Apply the 0.6% monthly dip instead, and that same car is running about $162 cheaper than it was in June.
Neither number tells you the whole story by itself. The month-over-month dip is the seasonal noise. The year-over-year gain is the trend sitting underneath it. A buyer who only reads the monthly headline could easily assume used prices are in freefall, when they are actually holding firm against last year.
What This Means for Timing Your Purchase
If wholesale prices are still running above where they were a year ago, that same strength eventually shows up in what a dealer offers you for a trade-in. It shows up in more than just what they charge for the car on the lot. If you are thinking about trading in a vehicle, a market where wholesale values are elevated is a better moment to get that offer. Waiting through a deeper seasonal dip later in the year works against you, not for you.
On the buying side, the seasonal dip is your leverage instead. Late summer’s normal softening in wholesale prices opens a short window. A patient buyer, one who is not locked into a specific make or model, can negotiate from a stronger position in that window. Spring is the opposite: dealers are restocking and paying up at auction to keep inventory moving, and that cost gets passed along.
How to Use This Data as a Buyer
You do not need a dealer license to read this data. Cox Automotive publishes the MUVVI publicly, along with commentary on what is driving each month’s move. Before you negotiate, check whether the current reading is trending up or down against both the prior month and the prior year, the same two-number comparison used above. A rising month-over-month trend paired with a rising year-over-year trend tells you the seller has less room to come down. A falling month-over-month trend, even inside a rising year, tells you there is short-term room to negotiate.
Pair that context with the new-vehicle ATP data if you are cross-shopping new against used. New-vehicle prices are holding close to flat while used-vehicle wholesale costs soften on a seasonal basis. That combination narrows the price gap between buying used and buying new. Depending on your credit tier and the specific vehicle, that narrower gap can change which option actually makes financial sense for your budget.
None of this replaces getting a used car inspected before you buy it. What it does is tell you whether your quoted price reflects where the broader market actually sits. It also flags whether a dealer is pricing against last month’s stronger numbers instead of the current trend. Ask to see how a specific vehicle’s asking price has moved over the past 30 to 60 days, if the dealer’s own system tracks it. A price that has not moved despite a softening wholesale market is a price with room to negotiate.
Frequently asked questions
What is auction data and why does it matter for used-car buyers?
Auction data is the price dealers themselves pay for inventory at wholesale auto auctions, tracked by Manheim through its Used Vehicle Value Index. It moves before retail prices do, so it works as an early signal for where dealer pricing is headed.
Are used car prices going up or down right now?
Both, depending on which comparison you look at. As of mid-July 2026, wholesale values were down 0.6% from the prior month due to normal seasonal softening, but still up 2% compared to a year earlier.
Is now a good time to buy a used car based on auction data?
A month where the auction index is falling, even while the year-over-year trend is still positive, is typically a better negotiating window than a month where both figures are rising. Late summer has historically been one of those softer stretches.
How can I use wholesale auction data to negotiate a better price?
Check whether the current Manheim reading is trending down month over month before you negotiate, and ask the dealer whether a specific vehicle’s asking price has moved recently. A price that has not adjusted despite a softening wholesale market usually has room to come down.
Does auction data affect new car prices too?
Not directly, since new cars come from manufacturers rather than wholesale auctions. New-vehicle average transaction prices move separately and more slowly, but the two markets interact: when used-vehicle costs firm up, the price gap between buying used and buying new narrows.
