like when your driving say.. 3,000 rpms on the highway.. and u mash the gas.. does the rpms wind up.. like skyrocket but yet your car doesnt really increase speed? if so.. thats clutch.
if no.. and it feels like its laggy.. or just like sick or slow.. id do a tune up.
do you know when your plugs were changed last? if no.. or its been awhile.. order plugs and change them.. its a simple job and greatly improves spark therefor clearing any issue like this out. Plus.. spark plugs dont last forever..
they need a freshen up.
same with wires.. changed recently? or no? coil packs only go bad if they crack or if the car misfires.. otherwise coil is fine.
when is the last time you changed the oiL? this can also have alot to do with it. and also.. fuel filter.
all of the above are extremely easy fixes.