Shadow public health minister Luciana Berger said legislation and education "can work very well hand in hand" to ensure drivers do not smoke when there are children in the vehicle.
When asked if launching an educational campaign would be more effective than enforcing a ban Ms Berger told Daybreak, "I don't think it's either or."
"I think we need to look at education as a lot of people don't know that smoke within a car is 23 times more toxic than it is smoking in a building or a home, and that's obviously very important that people know that", she continued.
"But we also know that legislation alongside an education campaign can make a massive difference."
More top news
Baring your bottom in public could get you two-months behind bars - or six months if you're a repeat offender.
Sacked Coronation Street star Marc Anwar has apologised for his "racist" Twitter comments, calling it a "moment of madness".
The French President says the refugee camp in Calais will be dismantled "completely" and expects Britain to play its part.