#include <MsgBoxConstants.au3> ; to declare the Constants of MsgBox
Local $sRegex = "(?m)\s*\d+[.,]\d+"
Local $sString = "Mazda 6 2.0 Skyactiv-G Wagon 2018 - Startstop.sk - TEST" & @CRLF & _
"Mercedes C63 AMG Sound REVVING 6,3l V8 "
Local $sSubst = ""
Local $sResult = StringRegExpReplace($sString, $sRegex, $sSubst)
MsgBox($MB_SYSTEMMODAL, "Result", $sResult)
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for AutoIt, please visit: https://www.autoitscript.com/autoit3/docs/functions/StringRegExp.htm