How much does it cost to have a mechanic replace O2 sensors in 1997 BMW 3.18ti's?
My car, a 1997 BMW 3.18ti, has the check engine light on. I've noticed that the car feels sluggish and accelerates slower than it used to, and the mileage has gone down. I think I need new O2 sensors, but I'm not sure. If I take the car in and have the sensors replaced, how much will it cost? Is this even the right thing to repair/replace?