I have a 2.0L S Max with a Kerbweight of 1,850 / MTPLM of 1,480 and tow a Troll 530GT. After my first drive I found it a great combination and I wouldn't want to drop my kerbweight down to much further unless I really had to. I haven't weighed my Troll all in but wouldn't be surprised if it was close to 1,300 what with attached awning, motormover, added options plus normal holiday kit. I would think that a 1litre C Max might struggle and may not be as stable as it should. This is a definite tow car match exercise before taking the plunge