I had the same overheating problem with my Verona. Fortunately my
local dealer replaced all the parts including the engine at no charge
and I only had to pay $50 in labor charges.

Of course, I was still having problems with the darn thing's alarm
system shutting it off at every 5km on the nose. As long as it's not
driven more than 5km she'll go where you want. But the minute she gets
to 5km, she cuts off like the key was used. I can hit the switch and
start her right back up...still moving even, but who the heck needs to
fool with that? I've actually sold her to a friend who is sure he can
get the alarm system off and cure the problem. We'll see.