Depends on the car, the spec, and the way it's driven.
My brother has a new GTI MK5 and the thing eats oil!
Most new high performance engines have a fairly healthy appetite for oil(AMG Mercs, Any M BMW, Scooby's and Rotary's all spring to mind)
Not really a problem as long as it's checked regularly. Never let it go beyond the in mark on the dipstick...when the light comes on it's too late!!