Cox Automotive’s Manheim Used Vehicle Value Index mid-September 2026 update (published Sept. 18) puts the seasonally adjusted wholesale index at 206.2—a 1% decline in the first 15 days of September versus August. Non-adjusted wholesale prices fell 1.1% over the same window and are down 1.1% year over year. Cox notes that print is enough to tip the year-over-year comparison negative for the first time in 2026 (−0.4% versus September 2025).
That is a wholesale auction benchmark—not a guaranteed retail asking price or a locked trade allowance for your car. When indexes soften, some sellers assume every desk will automatically raise offers. Others panic and take the first number. Neither reaction replaces a real appraisal.
The same mid-month check shows wholesale days’ supply at 27.8 as of Sept. 15—about 2.4 days higher than a year earlier. Sales conversion averaged 55.8% in the first half of September, down 0.7 points from August and 1.4 points year over year. Soft conversion means desks are choosier about which units they fight for—not that they stop buying.
How competing offers work on PriceForMyTrade: competition is handled manually, dealers contact you directly, and first responses are typically the same day—not guaranteed. Offers are confirmed after a physical appraisal. Dealers can buy outright; you do not have to purchase another vehicle. Submitting takes about 30 seconds. The service is free to the seller; participating dealerships pay for enquiries.
That is not an instant online valuation. If you still owe money, read selling a car with a loan payoff. Weighing trade credit versus cash? See trade-in vs selling outright. East Texas sellers can start at sell my car East Texas.
Takeaway: A mid-September wholesale pullback is industry context—not your VIN’s final number. Shop competing dealer conversations, then let appraisal confirm the real offer.