E39 M5 values rose dramatically through 2021-early 2022, peaking with multiple six-figure sales, then softened 15-20%+ from mid-2022 onward; well-maintained low-mile examples in desirable colors still command strong money, while average examples have returned to $20-30k.
Market trajectory: COVID-era boom and post-2022 softening
BMW E39 M5 · value-and-market