Today’s cars are certified “as a whole” a better durability than the cars of a few decades ago, so at least my impression. This is probably primarily about the rust question, not about electronics and drive. =) In the engine area there is the assumption that “downsizing” leads to increased wear – is this only focused on attachments such as turbochargers, injectors etc. or does this concern in your opinion also the block including moving parts? I would like to look at this from the perspective of the moderate load placed on an engine in its lifetime. But even with a restrained motorway speed of 130 km/h, the continuous load required by smaller engines is significantly greater than with correspondingly stronger engines. For this, the smaller engine can be moved significantly more efficiently, namely in correspondingly higher load range.My core question is based on an example: Motor A has 80 hp, runs the majority of its life with 130 km/h = moderate load requirement Motor B has 140 hp, runs the majority of its life with 130 km/h = low load requirement. Now the nominal power is of course only a rough measure of the capacity of the engine’s average operating speed or is made up to the average.