Hello,
What year is your Qubo from? I assume (but it can be wrong) it's not an automatic, but the Dualogic / Selespeed transmission.
Here's an interesting thread about this transmission:
Ok, so we're had a discussion thread about dualogic issues for a few years now, and it's basically 41 pages of doom and gloom, offering little hope to new folks who come here looking for answers. So I'm starting this one to try to redress the balance. There are a few garages out there claiming...
www.fiatforum.com
The Dualogic is a very complexe system, it needs regular servicing with several actions made in a specific order. Why have you changed the oil? Have you had any strange symptoms? Errors on the dashboard?