I'll say go for axio because i was in same dilemma , The only reason i didn't got go for altis was because of it's high theft rate and fuel economy, i bough a axio g variant from Sharabhi( who is a trustedPW member ,) car was in good condition with no meter tempering ,
Ok, now about acceleration , i personally smoked 1.8 Reborn 2007 auto , I also did a 0-100 speed test on a steep road and it took me 10sec to reach 100 mark , car was in D Gear , i guess if the road was straight, it could have achieved 100mark with in 9sec,
Now about Fuel Consumption , It's Okay , 16/17 is achievable if you drive under 1RPM, but i get 12-13KM/L with AC on, Some times i race and some times i drive under 2RPM with eco mode on.... Axio has 54-55 Litter Tank with reserve of 10Liters
And please don't fall for this bull **** , 5 year old car , tempered car , widowed car , blah blah blah