I honestly don't think it will be that bad or that much heavier (guess 100kg?). Modern engines have allot more torque and power, not sure displacement is a good performance guide anymore. It won't be quick but I doubt you'll have to change down as long as you're going fast enough to start with (80 should be more than enough...). If you're right it would be a bit silly; maybe they won't offer the 1.4 petrol or 1.3 diesel (0.9l twinair and 1.6l diesel are 105 hp).
Very quick look.. Cashcow + 2 is offered with 117hp petrol, 110hp diesel (as well as some bigger/more powerful engines admittedly), barely more than 105 (you wouldn't notice the difference?). I'm sure I remember reading that the twinair can easily go to ~120+hp so that might be offered and then there is the 120hp version of the 1.6 diesel...
Hmm, will be interesting to see what FIAT actually offer in this car.
Allot of people think the 500L has small engines for its size, I don't get that (unless you want to tow a caravan).. even the motoring press in the UK who hate FIAT are praising the engines. It is a big car for the engine lineup but it's a very lightweight "big" car at only ~1200kg (IIRC).I suppose in the past FIAT has always offered a quick version which always worked out very cost effective for such a fast car, and they are now causing those customers to look elsewhere.