Re: Which engine?
The 4 cylinders cars are cheaper to service than the 6 potters for example cam belt changes cost £400 as opposed to around £280 for a TS. The clutch is also big money to change on a V6 and still quite expensive on a TS.
Some argue that V6's are more reliable, but problems do occasionally occur such as blown head gaskets and bottom end problems (there are usually a few on ebay for spares/repairs), and if a V6 goes wrong it will be more expensive than the 4 cylinder cars to put right.
Fuel consumption will be between about 18-25mpg on a V6 and 25-33mpg on a TS depending on the way you drive.
They are both great though test drive them both to see which one suits you best.
Giulietta 2.0JTDm (170), BMW 335i Cabrio