For anyone that has an alfa then i highly recommend getting yourself some diagnostic equipment.
either software or handheld.
I use a handheld on mine and works a treat, not only does it tell you if there is a problem, but you can turn off the airbag and Engine control light too. It tells you what the problem is not only will it provide a fault code it also in most cases tells you the actual error i.e brake sensor etc...
Each time something changes on an Alfa, ive found that it always brings up a fault on the dash which generally you need to pay £35.00 to the garage to check it on diagnostic but some garages also charge you £40 on top as they have to legally look over the car to make sure its road worthy, which is a massive con!
A cheap yet very much adequate handheld costs between £50.00 and £100. Mine was £50 and works with any car from 1993 onwards with an OBD2 or EOBD2 for European cars.
Do a google search on them...
Think of it this way you can check the cars performance regularly to avoid problems - luckily i havent had one with this Alfa but my previous one was a pain in the ****.
If your car is running well then develops a fault, plug in the handheld in and it will perform a freeze frame to tell you how the error has occurred.
Much easier than carting your laptop and cables around....
Just a thought!