They are a variety of fuse sizes in use in automotive applications:
(image from Wikipedia by user Havarhen, CC-BY-SA-3.0 license)
My 1989 Opel Vectra used regular fuse size, but if I remember correctly my 2011 Toyota Yaris used low-profile mini fuses. I haven't yet taken a look at what fuses my 2016 Toyota RAV4 hybrid uses, but wouldn't be surprised to find if they also are low-profile mini fuses.
What is the reason for newer cars using smaller fuses in general? For example, Wikipedia says that those mini fuses were developed in 1990s. I don't think a fuse box with either fuse size uses too much space. Also, the material cost differences are minimal compared to the weight of the car. Serviceability seems to reduce little: the smaller the fuse is, the harder it is to change it and the easier it is to lose it if accidentally dropped, although I don't find those mini fuses overly difficult to change.
So, there must be some reason to use those small fuses. What is it?