Enforcement officers will be able to issue a £50 fine for smoking in a vehicle and failing to prevent smoking in a vehicle carrying under 18s.
Last year an idea to ban smoking in cars carrying children received a majority vote by MPs.
Once again MPs and peers will vote on the proposal and if passed the ban will come into effect from October 1st.
The new law will apply to anyone carrying children in a car, not just parents. Although it will not apply if the driver is under 18 and alone in a vehicle.
There is also great support from the public for this ban, a YouGov poll taken last year found that 77% of adults in Great Britain agreed that smoking should be banned in vehicles carrying under 18s.
Scotland and Wales have also put forward plans to ban smoking in vehicles containing children.
Second hand smoke in children can increase the risk of asthma attacks, common colds, meningitis and cot deaths.
Dr Ilze Bogdanovica from The UK Centre for Tobacco Control Studies says the level of second hand smoke is higher in a vehicle because it's a very confined space.
According to Cancer Research UK second-hand smoke has caused strokes, lung disease and heart disease which have led to 12,000 deaths in the UK.
This will be the first smoking ban after smoking in pubs, restaurants and all workplaces was made illegal in July 2007.
''It's totally unnecessary,''.
But Simon Clark director of the smokers group FOREST said ''this is all about forcing people to give up smoking,''.
''As long as tobacco remains a legal product smokers do have rights and that includes being allowed to smoke where ever they want,''.
