T.W.O.C. by Graham Joyce
Matt and his older brother Jake used to steal cars together. Now after Jake dies in a car accident that Matt was involved in, Matt is haunted by Jake's ghost. He continues to steal cars and gets sent away to a rehab camp where he, of course, unites in an unlikely friendship with the only two other campers there. They strike out together and Matt finally gets closure on the accident and figures out exactly what happened that night.
I liked it better than I thought I would, but it's a NAY. Keep it around for guys who like cars? FYI: it's filled with an awful lot of British slang.