A quick check on sgaltis forum indicates a more achievable
number is 12km/L. A check with 2 owners i personally know, is
11km/L.
my 2 mths old opel astra 1.6 going 13.5km/L, while my ex ride
corolla g9 1.5 did 14km/L, with same lifestyle.
if you compare astra and altis (both being 1.6), yes then conti fc
is better.