how come the cupra doesnt use any oil ive gone through 3 litres by 15000 miles

My FR TDi has never needed topping up between services![]()
My FR TDi has never needed topping up between services - and yes, I do check! Just have it changed at the service and that's it for the next 6 months!![]()
What, not even when it was new and running in?
My Leon needed a top up today, almost 4k miles now from new.