Most 2020 Leons were sold with VW‑Group 1.0 or 1.5 TSI petrol engines; the 1.5 uses cylinder deactivation and may have a petrol particulate filter (GPF) fitted. A manual gearbox avoids DSG-specific service items, but clutch wear is the main driveline item to watch on a 6‑year car. SEAT parts are widely available through VW Group channels in Ireland, so servicing and replacement parts are straightforward to source.

• Clutch feel and bite point — check for slipping, a very high bite point or judder when pulling away (manual wear is common at ~6 years).
• Engine oil condition and consumption — look for blue smoke or low oil levels; check for any history of top-ups that could indicate consumption or leaks.
• Listen at cold start for unusual rattles from the front of the engine (timing‑chain/tensioner noise) and check for turbo lag or unusual turbo noises if it’s a boosted TSI.
• GPF/engine management symptoms — after short urban trips check for limp‑home mode, frequent regens or loss of power which can point to GPF/soot issues on petrol models.
• Suspension and brakes — check for knocks from anti‑roll bar links/strut mounts, rear arch/sill corrosion typical in Irish cars, and remaining pad/disc thickness.