2003 Mini Cooper ALL FWD I4 1.6L cyl 5-Speed Manual Manual
No formal testing has been done on the 5-Speed Manual Transmission or the 6-Speed Manual Transmission. Remco has never heard of a problem towing these vehicles. Please confirm in your owner's manual, and follow the outlined procedures for towing. Remco accepts no responsibility for Transmission damage.
Cut and paste from Remco web page. http://www.remcoindustries.com/Towing/Store.php
Good Luck:)
http://www.technomadia.com/2011/11/a-mini-adventure/
http://www.miniusa.com/content/dam/mini/PDF/archiveownermanuals/MY02-07/2003_Owners_Manual_Hardtop.pdf