By me being the original owner, after almost 20 years I cannot complain about the car?s reliability. The only things that I have changed so far are the battery, muffler, and shocks. Everything else is still original. I have found out that most of the factory parts will last for years if you take care of them. So, if you are going to replace any parts, I suggest you replace with original Isuzu parts. I know it may cost more, but for the Impulse, original parts fit better. It?s always good to have an Isuzu manual on hand.