Skoda Octavia advice

Looking at the ad on DD looks in one of the photos that there's an engine management or some light on. If you're going to look at it and that's off when you view I'd be questioning what it was, and find out if it was fixed or if they just cleared it. I'm guessing they'll say ah that was nothing, but it'd put me off.

If You need help during buying car You can give a shout to https://www.facebook.com/Marcin.Nowak.motoexpert

Well enough priced but a nasty scrape on the rear wheel arch (and is it into the passenger door or is that a reflection ) , that would cost a few quid to put right

There are a few cars ( albeit without the SLINE interior ) that have lower miles and are also well priced

Not doing himself any favours with the brevity of the wording in the ad

And back to Skoda Octavias....

If your looking at the 1.6 TDI from memory it's the egr valve gives trouble and is pricey to replace.

Also injectors.

Any engine light on needs to be investigated.

Aside from the belt/pump, I’d be checking for knocking from the flywheel when the engine is cold (will sound like a ping pong ball knocking around inside a tin can 😂 ) make sure the climate control is heating on both sides (could pinpoint blocked heater matrix, or could just be CC system needing recalibration, either way it’s worth checking), if it has front assist/radar/camera it’d be worth driving the car 15-20 mins and wait for any warning messages. check infotainment is working, not resetting, touch screen is responsive, nav works if fitted.

The 1.6 tdi injectors generally always fail electrically rather than mechanically like most diesels so there is actually no warning, the piezoelectric coil fails and that's it

They fail mechanically too. I've personally seen it happen in a 2017 1.6tdi golf. It's the main reason the VAG group developed their own injector cleaner additive for the cr TDI engines.