I tried it on my wife's 2007 Nissan Xterra. It connected and said no problems, safe to drive. However, the check engine light was on. Hmmm. Then I tried it on my 2002 Jeep Liberty Limited and all it does is spin and spin. Never gives me a reading, nothing. So I'm guessing this thing really doesn't work. Well, at least not on my vehicles. Good luck on your vehicle.
Pros and Cons:
Bottom Line: No, I would not recommend this to a friend