I would like to buy a new (used) Volvo at the end of the year. Because of 45 TKM/year mileage, diesel is a must. But: because of the high mileage, the car will eventually die of motor death and not because of other “diseases”. Here are my questions: a) Which of the engine variants of the 2.5 litre engine (130? 163 180 hp) would you trust the greatest mileage? Since it is always the same engine in principle, one might think that the smallest engine lasts the longest (kle inster PS/Hubraum Quotient, as used to be the 220D with 90 HP). Or are then also some parts designed weaker, which would compensate for the lower load again? Please be so nice and refer answers purely to the mileage / durability and not to the power (“130 hp is undermotorized” of the machine. b) Now BMW has quite nice 6-cylinder – e.g. the 525D. In terms of mileage there is a principle-related advantage of a 6-cylinder engine of the same cylinder capacity compared to a 5-cylinder engine? Example (caution, Laie speaks): In the 1990s, the large volume (2.5 liters) 4-cylinder diesels have always perished from burned-out cylinder head seals. If so, does this mean that the more cylinders per cylinder capacity, the less HUbraum per cylinder and the less the load of a single cylinder? c) Can I assume that the topic of “dental belts” is not an acute issue in the Volvo dies? I read very little about it in the forum? If I could get some ideas from you, I’d be safe, wouldn’t I? Greetings, Arnd.