Instruct: Classify a review as either positive or negative.
Query: IN ONE USE SAVED ME THE COST OF IT, PLUS!!

After being "robbed" with a $150 diagnostic charge for a loose gas cap, I invested in this unit. It's easy to use and I have now had the opportunity to use it on my wife's car and found check engine light was on for another loose gas cap. With this unit I was able to shut the light off!! Hurray!! I have in one use recouped the cost of the unit an saved $80 as well. Buy one, it's well worth it.