We have tow a caravan with our Mobility lease car for many years, you will require permission from Mobility and permission to fit a tower, this has to be manufacture, dealer or a VAT registered towbar fitting company you will have to inform Mobility insurance company who check back with Mobility.
You are only allowed to use Mobility approved RAC for recovery, the offer RAC Arrival for an additional £65.00, you are not allowed to use any other recovery company.
In the event of an accident your towbar is not covered, it’s your responsibility.
I would check with Mobility insurance company I am assuming they will not insure your to tow over 100% of the kerb weight. RAC will not recover your caravan if you tow over 100%.
If this is your first caravan I would recommend as mall to medium caravan around 1200 -1500kg and not towing over 85% of your kerb weight.
A Ford Kuga FHEV £1995, it is a excellent tow car good reviews on Practical Caravan reviews, and excellent reviews from the Ford Kuga Owners Club forum you are looking at 50+ mpg solo and 30 mpg towing as good as any diesel, plus a towing weight of 2100kg.
Alternatively Ioniq 5 EV can tow up to 120 miles on a full charge.
Unfortunately I have suffered a brain injury and occasionally I get confused and often say the wrong thing.