Binance had 4.17 trillion trading volume in the past 7 days
Using statistical methods, for BTC, ETH, LTC, and XRP, Binance wash trading was estimated at >50%.
https://www.nber.org/papers/w30783
You can see other pairs on Binance that are clearly more. For example, GAS is the 9th "most traded" token on Binance. It claims ~$100M in daily volume, but there's not even $1M in liquidity between +/- 2% of spot. That is almost certainly all wash trading.
https://www.coingecko.com/en/exchanges/binance
Binance volume numbers are not believable.
Apparently sometimes this goes very wrong [0].