This is just a few pointers on what you may like to check on your car if you suspect there could be an issue with any of these things.
· Tyres are inflated correctly
· Wheels are balanced
· Tracking is not out
· MAF sensor is clean
· Air filter is not clogged up
· Exhaust is not blowing
· Spark Plugs
· Oil level
Again this is not mandatory, but always advisable if you suspect there could be an issue there.

Thanks, Mark