It's the opposite over here in the states. The mileage you get out engines has been going up, ours has been going down.
As someone who lives in the States, I have to disagree there. When I was a kid cars were considered "worn out" at 100,000 miles. By that time they were usually trailing a blue cloud of oil smoke everywhere they went, stalling at traffic lights, and failing to start in cold weather. At that point you either sprung for an engine rebuild, or junked the car -- probably the latter, if you lived in a northern state, because it would be so rusty by that point it would barely cast a shadow. And reliability? It was common for cars to have several faults *when you bought them fresh from the factory*, and it only got worse from there.
Today? I've driven cars with 200,000 miles on them that drove like a new car. Both reliability and durability have gone way up. Most people rarely have to deal with anything but routine maintenance.