Asking whether a BMW 3er-Reihe G20/G21/G80 320i Touring Sport Line Steptronic is a suitable automobile for families, is not easy to answer from a technical point of view. The range of families requirements is wide, so this representation only considers the common aspects.
The BMW 3er-Reihe has 5 seats, which is enough for many families, and also brings a decent trunk with 1510 liters of volume, in which there is still room for luggage even with a stroller loaded. Good conditions for a family car. There are no Isofix brackets installed. These could be used to secure child seats easily and safely.