From the National Highway and Transportaton Safety Administration
From Parentcenter.com
From BuckleupAmerica.org:
The front seat is a dangerous place for children. Front air bags can deploy even in minor crashes and can seriously hurt or kill children. Buckle children 12 and younger in the back seat.
From Edmunds.com:
Avoid the front seat altogether. Never, ever place an occupied child safety seat in front of a passenger airbag. Also, even in older vehicles without front airbags, consider securing your child in a safety seat in the rear (if your car has rear seats), since this seating position is much safer in a front collision.
From the National Safety Belt Coalition:
Q: My children are at ages where they get restless in their car seats and try to move around. I find it very distracting. Plus they fight with each other. I think it's safer to put one of them up front where I can keep an eye on him.
A: No. The safest place is in the rear seat properly buckled. It is critical not to give in to a child's "growing pains" while traveling in a motor vehicle. Bring along some soft toys to keep them occupied while properly buckled up and seated in the back seat. This may sound difficult, but never take short cuts when it comes to children's safety.
From the National Center for Injury Prevention and Control:
Kids in the Back for a Safer Ride
All children ages 12 years and younger should ride in the back seat, the safest part of a vehicle in the event of a crash. This is especially important for vehicles with front passenger-side airbags. Riding in the back seat is associated with at least a 30% reduction in the risk of fatal injury in cars without front passenger side airbags. Placing children in the back seat of vehicles with front passenger side airbags reduces this risk by 46%. Infants in rear-facing child safety seats should never be placed in a seat in front of an airbag. About one-third of children ages 12 years and younger who were killed in 2000 were riding in the front seat.
Airbags and Children
Even in a slow-speed crash, the force of a deployed airbag can injure or kill a young child. Riding in the back eliminates children?s risk of injury from front passenger-side airbags. Children ages 12 years and younger should always ride in the back seat, the safest part of the vehicle in the event of a crash.
Personally I would never put one of my kids in the front seat of the car, unless it was absolutely necessary. Certainly not for a treat even if it was just a short journey.
IMO, one of the costs associated with having children, especially more than one, is the extra cost of having a car big enough to hold them (and any friends who you may also have to transport) in the back seat. We are a family of three, but I drive a people carrier.