I got a few problems with my car!

Well first thing is that it started to burn oil

what can this be? rings or valves?
and how much does it cost to fix it?

also sometimes my idle drops to about 100rpm and then shoots back up to about 1000 and when I accelerate the car just lags and then it accels normally weird!
what can this be? Coils? Plugs?

and also how much kms do you get on a tank not driving the car hard?
i get about 400km a tank is that normal?

thanks for your help in advanced

 

the idle and hesitation try the cap and rotor first....
do you think you got some bad gas somewhere (you are using the highest octane avail. right?)

about 250 miles to the tank eih dring hard using a/c yeah

buring oil... have you done compression test to see if your rings are bad?

 

Check the TB for oil. You might be pulling oil through the PCV valve. Buy and install a catch can. Check your conections, plugs, plug wires ect.