Translate the following English sentence to French:
"It has transpired that not only the fiscal instrument greatly impacts on total consumption, but that the tax level in a particular Member State also has a bearing on the neighbouring countries."
Il s'est avéré non seulement que l'instrument fiscal exerce une grande influence sur la consommation totale, mais aussi que le niveau des taxations d'un État membre influe sur celui de ses voisins.