For those with the aptitude to figure out both a wrench and an engine bay, working on one’s own used car in New Jersey could save money.

But consumers are increasingly looking online for information about car repairs, and the results haven’t always been as promising as many owners had wanted, reported the Associated Press.

The problem is that even used cars are increasingly complex vehicles and controlled by computers, making it difficult for handy people who think, “Hey, I can fix this, I can fix that,” to accurately determine what ails their cars, mechanic Craig Douglas told the news provider.

While regular maintenance is a given for automobiles, buyers who consider a used Chevrolet Equinox in New Jersey may have less to worry about than other owners, according to Edmunds.com.

A 2005 model of the SUV was ranked as the best in the compact class in terms of reliability, and buyers may find it selling for less than other SUVs in its class because of its “out-of-the-spotlight status,” the website’s editors added.