US Manheim Index Year-on-year
US Manheim Index Year-on-year stood at -0.55% in Sep 2026. It is one of the indicators in the Manheim Used Vehicle Value Index table (Value · Monthly), with a complete series running from Jan 1998 to Sep 2026. The complete series with an interactive chart, free to download.
This indicator in the Manheim Used Vehicle Value Index table
| Indicator | 09-2026 | 08-2026 | 07-2026 | 06-2026 | 05-2026 | 04-2026 | 03-2026 | 02-2026 | 01-2026 | 12-2025 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| TOTAL MARKET (Jan 1997 = 100) | |||||||||||
| Year-on-year | -0.55 | 0.36 | 1.25 | 2.1 | 3.61 | 1.81 | 6.24 | 4 | 2.36 | 0.38 | |
| Month-on-month, seasonally adjusted | -1.1 | -0.85 | -1.36 | 0.11 | 0.32 | -1.56 | 1.42 | 0.85 | 2.4 | 0.05 |
Understanding US Manheim Index Year-on-year
The US Manheim Index Year-on-year measures the percentage change in wholesale used vehicle values compared directly with the corresponding month of the previous year. It captures twelve-month trend momentum across the aggregate remarketing sector, filtering out any sub-annual timing quirks by evaluating identical seasonal windows. This metric differs fundamentally from sequential monthly indicators by emphasizing medium-term trajectory over immediate short-term market swings.
Updated monthly in tandem with the primary index release, this twelve-month metric is subject to revisions whenever prior-year baseline data or current-period figures are updated. Seasonal influences are naturally neutralized by comparing matching months, making this series exceptionally useful for cyclical economic analysis. While month-on-month figures capture tactical inflection points, the year-on-year perspective provides the honest benchmark for evaluating sustained inflationary or disinflationary phases in the used car market.