For 4 weeks I have had an 8-month-old used car Jaguar XE 180PS Diesel) in which quite clear howling noises can be heard in the engine range, exactly when I take away gas and the engine is in the speed range from 1600 to 1000 revolutions. Sounds like a U-Bahn is entering. Actually, would like to know if someone has that, because according to Jaguar it can happen occasionally with the XE models and Jaguar does not know what it is. the noises are with petrol engines, as the engine noises are lower overall. For me, therefore, the question of the conversion of the purchase contract also arises. Maybe someone has already had similar experiences???