Have now for 10 days a new 156 sw 2.4 JTD 20v. Really very nice ! Wanted to know your opinion or experience, how to drive a new car. I wanted to now so up to approx. 1000 km the engine some time to play in. Despite the manufacturing tolerances, I think that the pistons and cylinders have to fit in first. Drive therefore therefore at most 160 and max. 4000 revolutions. Furthermore I drive alternately city, country, highway. I switch as much as possible in the speed range of 1000-4000. From 1000 km I wanted to slowly increase to top speed. What do you mean?