Seen conflicting advice on the subject, have an 8 year old boy over 135cm. Does he need a booster seat, most sites suggest if over 12 years or 135cm not needed. Some sites can read in more than one way I.e implies need to be over 12 years old.

Anyone confirm.

Thanks

Go to the N332 facebook pages. It is run in conjunction with Spanish Traffic Police and the GC. ISTR this question has been asked before so you may find it there. If not then they aim to answer your traffic/driving related questions within 24hours. You will get the right answer from the horse's mouth.

Straight from the horse's mouth.
If you do not understand Spanish I will give a brief resume.
Below are Modifications:
DGT website.
Children measuring 1.35M. or less must ride in the rear seat of the vehicle,using the appropriate CRS (child seat.)
It is only recommended to use a CRS until the child between the heights of 1.35M &1.5M

This is still not clear!

So, for clarity;

• The law states -children under 1.35m must be in a child seat on the back seat
• Trafico further recommends that this be extended to all children under 1.50m

As MikeJ pointed out, it is well covered by the N332 site

Children in Cars | N332 - Driving In Spain

That is a translation of what the DGT states.

Having looked around that website some information is out of date:by some years with no further updates. Noting that plus looking at all of those adverts I would also argue that the offical hoses mouth guide that some say it purports to be.

Que?

Many thanks, will take a look, was aware about the rear seat so that's fine.

He is over 1.35 but well under 1.50.

Sorry;wrote that in a rush, just as someone arrived to stay. Work comes first......so I just hit the send key, without proof reading.
That sentence should read:

So why exactly do you think it is far away from the official hoses (sic) mouth guide?

Why are you surprised that websites have adverts?