I own a 02 model exis.
fuel avg (petrol)
city around 11 km/l
highway around 19 km/l if u drive @ 120 kmh.
city : i'm getting like 160-170 km/cylinder.
highway : around 190 km.
Air-filter : 250-350.
oil filter : 120-150
She takes 3.7 litres of oil.
Other then that, most parts can be sourced from 2nd hard car market like shersha if not found new.
Well she is one of the fastest in it's category with very effective road grip.But suspension is a bit hard (because she has kinda sports suspension) when compared to later models.
If u r above or close to 6 ft' in height then u might have problem while sitting on driving seat because the gap between seat and steering is a bit less.also the steering is not adjustable.
And lastly, engine over hauling...well as per honda it's engine needs over hauling after 500k kms if not abused.