Mid-engined layouts are just a pain to do maintenance on, generally offer reduced cargo space and interior room.
https://upload.wikimedia.org/wikipedia/commons/thumb/e/e7/19...
https://upload.wikimedia.org/wikipedia/commons/thumb/3/34/Fe...
They build 3,500 of 'em per year. That's very high compared to say, any given Ferrari or Lamborghini model.