Hi Mark and welcome to the forum!
If you do a quick search on the web there are a number of sites with various hints/tips on buying but the most common things are;
- Full service history (including CAM belt changes and variator) – if it has patchy service history walk away.
- Tractor noise on startup – means that the Variator needs changing
- Seatbelts – check the mounts where the belts meet the mounting points – early ones become frayed and need replacing
- Check the floor pan thoroughly – the points where panels meet and jacking points can rust
- Check the top inner rear wheel arch cavity – they have a habit of rusting
- Body panels should not suffer from rust as they are fully galvanised, that said common places to find rust are on the wheel arches, where panels join and around the front lights, also check the inner wings under the bonnet - they killed Doogal's b!
- Check the operation of the windows (if electric) – water ingress in the motors can cause issues
- Check the hood and the hood rubbers closely, make sure that when the hood is up they all meet the windows and are not crumbling – hood and hood rubbers are expensive to replace!
- Jack the rear wheels off the ground and give them a good wobble – if there is movement its likely the ‘sway’ bushes need replacing
- Check all of the panels align – sounds obvious but if they don’t its likely to have been in a smack
- Try to find one with leather, makes sense to have wipe clean seats!, also try to get one with the ‘comfort pack (electric windows and mirrors plus front fog lights).
- Don't be put off by a car that has been re-sprayed as long as there does not appear to be after market welding, many loving owners have had their car's re-sprayed as FIAT shipped the mk1 b's with water based paint (I actually think that they used crayola children's washable paint)
- I suggest trying to source a car with an after market stainless steel exhaust, the FIAT exhaust weighs a ton and has a number flow restrictions
I hope this helps, I am sure that others on the forum will also add to the list - good luck!
