Children in the front seat?

Having googled about this, I've come up with conflicting statements but the AA state that, in Spain:

"Passengers/Children in cars:  Children up to the age of 12 and measuring less than 135 cm travelling on the front seat of a car must be seated in a child restraint system adapted to their size and weight.  Children measuring more than 135 cm may use an adult seatbelt."

As the AA website is the most professional of those that came up in my google search, I'm taking it that they are correct?  My ten year old is well over 135cm, so presumably he can sit in the front seat, using the installed seat belt?

My understanding is that they still have to be at least 12 years old to travel in the front.  Otherwise it's the back seat on a booster seat.

I didn't know about the height clause.

If Myra from Costa Advice Bureau sees this thread I'm sure she'd be able to clarify for the matter for us.

Justin 

Thanks Justin.  The AA website clearly says what I've quoted in my last post and I can't find any 'authoritative" website that says anything different!

Maybe Myra or someone else can clarify? 

12 years or being taller than 135cm to be sit in the front seat without a booster seat, just the belt.

Thanks, Maria!  My son is always asking to sit in the front and when we arrive in a couple of weeks we'll have so much luggage that he might have to!!  So thought I would check first!