My A5 went in for a oil/health check & they put it threw stage 1 of the oil check, which is seeing how much oil is used in 620 miles ( should be 0.5l) my car used the whole oil tank on 620 miles. Now I'm very worried they have taken it in for stage 2 & come back to tell me that the Pistons need to be changed. They took a copy of my service book & said they were contacting there office. The lady at my branch has been amazing so far, very helpful. Made me more comfortable, now the car is temp booked in for repair just waiting for confirmation & service checks. Will update when/if car is repaired.