Most 2021 Mégane diesels in Ireland are the 1.5 dCi Euro‑6 units paired to a manual gearbox — they’re efficient on long runs but sensitive to lots of short‑trip urban use. Diesel models have DPF and EGR systems that prefer regular motorway miles, and clutch wear/turbo health are the main mechanical points to watch. Note: Renault sold the Mégane mainly as a hatchback (and Sport Tourer estate); a dealer tag of “saloon” is common but may be incorrect.

• DPF/EGR behaviour — look for warning lights, excessive soot or black smoke after hard acceleration and evidence the car has done regular long runs to allow regeneration.
• Clutch and gearbox — test for slipping, a consistent grab point and smooth gear selection; manual clutches can be costly if heavily worn.
• Turbo and boost system — listen for whining, delayed boost or rattling and check intercooler/hoses for oil residue or leaks.
• Underbody and rear arches — inspect for corrosion or exhaust hangar damage, common on 5‑year Irish cars
• Tyre wear and suspension feel — uneven tyre wear or knocks over bumps can indicate worn bushes, dampers or poor tracking