My car has recently begun to feel rough. It has lost its smoothness during idling and more so when it accelerates. I can feel the roughness on the steering wheel and the floor when I am driving. Strangely, its performance appears to be unaffected and the engine is still responsive to the throttle. Fuel economy, too, remains the same. My car is six years old and has clocked 88,000km.
A car engine with a faulty fuel or ignition system will not run smoothly. Often, a defective gearbox can also cause roughness. Such problems with the powertrain will frequently manifest in