Most versions have a wide range of seat adjustment, although entry-level S models don’t get height adjustment, so bear that in mind if you’re particularly short or tall.
It’s disappointing that, on all versions, the steering wheel adjusts up and down but not in and out. Some people may also find the seat is a bit short of lumbar support, which can be an issue on longer journeys. Then again, most of the above also applies to the Mii’s key rivals.
The major controls are sensibly laid out and within easy reach. One annoyance is that, on versions with electric windows, there isn’t a switch for the passenger window on the driver’s side; you have to lean over to use the switch on the passenger door.