(Make sure you get written confirmation from Motability stating fitting a towbar is OK.)

Conclusion:

There shouldn’t be any problem having a towbar fitted to a Motability vehicle, provided you contact them and get permission first.

Don’t take chances by either not informing them or by having an unapproved towbar or tow bar fitter. Motability insurance will not have towing included in its standard cover.

Reference:

https://www.motability.co.uk/get-support/faqs/fit-a-tow-bar