Over a third of all pregnant women change cars during pregnancy. We have some tips for choosing the right car writes Geraldine Herbert Nobody really prepares you for what lies ahead when you have your first baby.From the endless information and lists of “must-buys” some are necessary – such as a cot, car seat, pram, clothes, and nappies – while others simply offer convenience but a third of us will change our car probably out of sheer necessity. So what is important about buying a family car? Apart from the usual considerations of driving dynamics, price, fuel efficiency and safety these are just a few things you may not have considered.   Five is better than three A three door car may seem like an option now but trust me after a few months of wrangling that concrete block of an infant seat into the back from the driver’s door you and your back you will reckon its time to reconsider.   Space & storage Having kids puts a whole new meaning to space so you should ensure that there is enough room for a pram, shopping, travel cots and any other objects you might require? And for long journeys comfort should be a  consideration.   Car seats and Isofix Regardless of the type of car seat you choose isofix is the safest option for securing your child’s car seat. Isofix connects the child seat directly and rigidly to the car structure so if can eliminate fitting problems common with the use of adult seat belts and improve performance in a crash so if you can at all opt for a car with isofix.  Remember when it comes to buying a car seat  it depends on the age and weight of your baby and the type of car you drive.   Safety rating and airbags Check the EuroNCAP safety rating of the car you intend to buy here and pay particular attention to how many airbags are on offer, you definitely want airbags and the more the better!   Electronic Stability Program Electronic Stability Program/Control (ESP) is designed to prevent your vehicle from swerving out of control by reducing the ability to skid, it works through a serious of sensors. From this year it has to be fitted as standard on all new cars but if you are buying a used car choose...