The clutch cable connects your clutch pedal to levers which allow you to change gear with ease and in comfort. If your car uses a cable-operated clutch and you find it hard to change gear and/or the pedal is stiff, then the most likely cause is a damaged clutch cable. If this is the case, you should replace your clutch cable immediately in order to avoid it snapping. But before you go searching for a replacement, it is worth bearing in mind that your clutch cable could just need lubricating. If this is the case, you can buy clutch lubricant in just a few clicks here on the Euro Car Parts website.