AustinPowers
Total Smeghead
It's not that Europe has bigger tanks, is that they have more efficient engines. Small diesels are quite rare in North America, and even when comparing gas engines you'll often find the same vehicle available with a smaller engine in Europe. North America is very much behind the times with vehicle technology compared to most of the rest of the developed world, the one exception is Tesla.
+1
I thought the same when I read all those comments about many oil changes, cost-intensive maintenance, bad reliability and the like by many US posters here, while also many here on the forum talk about having (or having had) V6, V8 etc. engines in their cars. Engines that are not very common here in Europe, sometimes not even available on European versions of the same model of car that is also sold in the US.
We have lots of cars with small (i.e. between 1.0 and 2.0 litre displacement) and fuel efficient gas and especially Diesel engines over here, mostly three- or four-cylinder cars, some even with only two (!) cylinders. Those Diesel engines in general are very fuel efficient, fun to drive, last almost forever and need very little maintenance, oil changes etc.