HI MY SLXI IS LOSING OIL BUT I HAVE NO LEAKS DOES ANYONE HAVE ANY IDEAS OF WHAT I CAN CHECK

Sure it's not leaking down the back of the block from the rocker cover gasket? That happens sometimes on the 1.8Ts. You won't notice a puddle as the oil only comes out when the engines running and gets dried out by the heat from the exhaust.

Other options could be leaking oil past the valve stem seals or leaky oil seals in the turbo but you would notice blue smoke in the exhaust if it was valve stem seals and massive loads of grey smoke if the turbo oil seals had gone

How much oil is it using anyway?

Could be leaking from the crankshaft seal on the gear box side leaking into the box, all cars I know of have leaked straight out though if it is the seal.