How much does a tune-up cost? That is one of the hardest questions to answer, and we get asked this several times a week. Vehicles have changed so much in recent years, all of the computers, sensors, injectors, spark plugs, wires, and other variables, that can affect the runnibility of your car, there is no way for us to give you an accurate cost until we can inspect your vehicle. If you have a check engine light on, we will need time to diagnose that, and then go from there. If your vehicle is running rough, with no check engine light on, we will need to inspect your plugs, wires, and fluids to see what the issue is. If you are having runnability issues, please give us a call at 425-481-1739, and we will get you in as soon as possible.