The big issue with any Europa is rust: yes, the body is glassfibre, but the steel backbone chassis is rotprone. If you want absolute peace of mind, the likes of Spyder Engineering have been producing beautifullymade replacement frames for decades and cars featuring these items are not widely considered to be the poor relations anymore.
The Ford-based Twin-Cam engine is a strong unit, but do check for thrashy cams or oil leaks. Fortunately, this enduring engine is well catered for by specialists. Parts are not so readily available for the Renault engine, at least in the UK, but you will have to work pretty hard to hurt one.
Gearboxes can be fragile and require regular care and attention. That said, don’t be surprised if the shift action feels a bit vague. Serpentine linkages don’t help, with the five-speed version being perhaps the best but most in need of constant adjustment.
As with most older fibreglass-bodied cars, electrical gremlins can creep in. More often than not, this is down to poor earthing.
Check for signs of water damage: leaks can occur around the windscreen. The tell-tell signs are peeling wood veneer and damp carpets. Replacement for these is readily available, but costs can mount up.