I have bought 2 sparks over last 3 years.
LT and LS.
All I want to say is that this is fantastic car in small category.
Very easy to drive, light stearing and clutch gives effortless driving in traffic.
Manurability is good in city traffic.
At 100kmph runs smoothly. I feel this is a high speed for small cars.
Breaking and control is good.
Maintenance till date is Zero apart from regular servicing.
I have heard tyre problem in this also which I am facing with my Magnum but for both my cars there is no problem.
Average on highway with AC is 15-16. Without AC 1-2 km more.
Most important is you get value for money.
I will strongly recomnend it if you are planning to buy.