This is the Mk3 Octavia (2017–2020 generation) commonly offered as a 1.0 TSI or 1.5 TSI petrol with a 6-speed manual. The manual gearbox is generally robust but the petrol TSIs are direct-injection engines so short-trip city use can lead to carbon build-up on intake valves over time; the 1.5 TSI also uses cylinder-deactivation (ACT) which can reveal intermittent ticking or slightly higher oil consumption on some examples. There’s no diesel DPF/AdBlue to worry about on petrols, and many cars of this year were sold as either hatch (liftback) or estate (Combi), so confirm which body you’re looking at if boot space matters.

• Clutch feel and slippage under load — test for slipping and check pedal free play for wear (likely to have been replaced at higher mileages).
• Manual gearbox engagement — ensure smooth selection in all gears (watch for crunching or hesitation into 2nd/3rd which can indicate synchro wear).
• Turbo / intake behaviour — check boost response and listen for whistling or rattles; inspect intercooler/turbo hoses for oil residue and test for rough idle that suggests carbon deposits.
• Signs of corrosion under rear arches and around boot sills/door bottoms — Irish salt and moisture accelerate rust on 7‑year‑old panels.
• Brake discs, pads and tyre age (check tyre DOT code) — replace tyres on age, not just tread, and check discs for scoring from long service intervals.