Car to tow behing motorhome

Hi everyone. We have an elderly Marquis Motorhome (2002) which had a special towbar fitted to tow our 2017 Ford Ka. The engineer specified that we must not tow a car over 1,000kg (1 tonne). The Ford is now getting a bit old and we are looking for a replacement.

Does anyone know what cars about 2-3 years old fit the following spec:

1. Less than 1 tonne kerb weight

2. 2-3 years old;

3. AC or, better, climate control; and preferably

4. 4/5 doors.

I have been searching through Auto Trader and it is really difficult to obtain this information - particularly the kerb weight - about second-hand vehicles.