Hey Michael, we can definitely help get you setup with everything you will need to flat tow your 2015 Smart fortwo but at this time we don't have a single part number that includes everything to make it super simple. We've talked about trying to come up with something like that but it just hasn't happened yet. So I'll list everything out you'll need as simply as possible and you can just hit add to cart from this page or click on the links to go to each page:
Roadmaster Base Plate kit... view full answer...
I would be happy to make some suggestions for you! To flat tow your 2009 Smart Fortwo you will need the following parts:
Tow Bar and Safety Chains - etrailer SD Non-Binding Tow Bar item # e44ZR
Base Plate Kit - Roadmaster EZ Base Plate Kit item # 52285-1
Wiring Harness - Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit item # RM-15267
Battery Disconnect Switch - Roadmaster Automatic Battery Disconnect item # RM-766
Blue Ox Patriot Portable Flat Tow Brake System item # BLU37TR
High... view full answer...