Here are pics of the throttle actuators on a v8 M3 BMW,,,what might happen is the car will loose power and throttle response might not be that good,,,,,when we replace the throttle actuators only one might be faulty,,,,but we replace both at the same time,,,,I know it’s a lot of money,,,,but you are better off replacing both at the same time,,,,,you don’t know how many times someone only replaces the bad one to save money,,,,and then next month the other one goes bad,,,,do yourself a big favor replace both at the same time