Looking at: http://www.teslamotorsclub.com/showthread.php/1128-Decoding-Tesla-Roadster-V... the suggestion is that a "3" in the 8th digit would signify a sport, and a "1" would be a normal roadster. In particular: http://www.teslamotorsclub.com/showthread.php/1128-Decoding-Tesla-Roadster-V... Digits 1-3, Manufacturer: 5YJ = Tesla Digit 4, Car line: R = Roadster Digit 5, Body type: E = convertible Digit 6, Region: 1 = USA Digit 7, Restraint system: For 2008, 1 = Type 2 seat belts and dual air bags For 2010, A = Type 2 seat belts and dual air bags Digit 8, Motor: For 2008, B = Tesla 56C For 2010, 1 = Tesla M6B; 3 = Tesla M6S Digit 9, Check digit: Variable according to formula Digit 10, Model year: 8 = 2008; A = 2010 Digit 11, Plant of manufacture: 1 = Menlo Park, USA Digit 12-17, Sequential production number They additionally note that Founders' Series vehicles will have F in digit 12. Therefore -- 5YJRE11B = 2008 Roadster 5YJRE1A1 = 2010 Roadster 5YJRE1A3 = 2010 Roadster Sport would seem to give us the ability to auto-identify a v1.5 car as a "B" in the 8th digit. Does anyone here know if this is reliable? It would be nice to auto-detect this to have one less thing to hassle the users with. Regards, Mark.