Hi Salvadore.
I too drive a 2 litre (150bhp) car, a large estate, and added my son to my policy as a named learner once he'd started his cycle of lessons.
When I added him my policy had 8 months left to run and the cost was circa €800, with Allianz through a broker.
On renewal last year he was still a learner and the 12 month cost to keep him on the policy was again circa €800.
I will say he wasn't at all confident in my car initially (he was doing the lessons in a Corsa), but over time his confidence in himself grew to the extent that he happily did his test in it, and passed first time. The power was definitely a concern of his initially, as well as the size of the vehicle, but with patient practice we both got over it without falling out.
He's now in his own mid size 1.6 diesel (95 bhp I think) and his first policy in his own name was a shade under €1,700 with Asgard (Axa).
I'm told the prices quoted to newly fully licenced drivers, and learner permit holders and their parents can vary wildly, possibly depending on how much of that particular risk category is on an insurers books at any given time.
Maybe someone in the industry could shed more light on that? Maybe that's as big a consideration as any other?