Fuel consumption of the new F2

Hello and good day I drive an F2, JG. 2001 with the 60hp machine / 75tkm and am very satisfied with it. -Actually it feels like new… The fuel consumption is with only city traffic (long traffic jam waiting times) with (for my sensation) very good five liters. Now I have read in the penultimate car picture the comparison between the new smart with start/stop automatic (generator starter) and a “normal” F2 with 71 petrol hp. AutoBild a fabulous consumption for the 71hp petroler of 9.6 (!!) liters. That can’t be true, can it? Has any of you already had experience with the new smart and the same motorization or can anyone explain this consumption? I think I would not achieve this consumption with my old F2. Thanks and greetings. Wolfgang