as others have said, only you know your son. the only thing I can add is that in a month the last of my three kids will grudate high school. in the 8 yr or so that I had one attending high school every year there were about 3-6 kids killed in car accidents that were primarily caused by mom and dad getting them that mustang or BMW that they just couldn't handle. IMO, no 16 yr old has the maturity, experience, nor skill to safely operate a high performance vehicle on a daily basis. inevitably, they get comfortable in it and begin to get careless. what they think they can do begins to exceed what they can do.
again, just my opinion, and only you know your son. but personally, I wouldn't put mine in one.