speedee oil change speedee oil change and tune up they charged 149$ + tax for tune up and all they did was change the spark plugs Metairie, Louisiana

"  charged me 149+ tax for tune up Witch was only changing the spark plugs   "

  So, what services did you have in mind when you requested this "tune up"?    Whenever a mechanic hears someone request that, it's like waving a flag that says "Sell me some expensive spark plugs".

   Not sure how old you are, but modern vehicles have computer controlled fuel and ignition systems.    Those computers adjust the engine automatically, so there is no need to make the adjustments that were formerly known as a "tune up" (i.e. points, timing, dwell, idle...).  The only remnant of what was called a "tune up" is the spark plug change.

     If you don't want to change the plugs yourself, you have to pay someone else to do it.  On a lot of cars with limited access, $149 is actually a reasonable price.