Asking whether a BMW 4er-Reihe F32/F33/F36/F82/F83 420i Gran Coupe Sport Line xDrive Steptronic is a suitable automobile for families, is not easy to answer from a technical point of view. families have a wide range of requirements, so this representation only considers the common aspects.
The BMW 4er-Reihe has 5 seats, which is enough for many families, and also brings a decent trunk with 1300 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.