The 2021 Captur diesel is the small crossover version of Renault's Captur II range and commonly uses Renault's small dCi diesel engines paired with a manual gearbox. Diesels of this era can be economical on the motorway but are sensitive to lots of short trips — expect DPF/EGR-related problems if the car has mostly been town-driven. Manual gearboxes are generally straightforward, but check clutch condition and turbo health; parts and servicing are widely available around Ireland.

• DPF behaviour: signs of frequent forced regens, persistent warning lights or heavy soot under the tailpipe (a blocked DPF is common on diesel cars used mainly for short trips).
• Clutch wear: high biting point, slipping under acceleration or a spongy pedal — a 5‑year manual Captur may need attention depending on previous use.
• Turbo/intercooler: blue/black smoke on start or under load, whine from the turbo, and oil residue on intercooler hoses or connections.
• EGR and intake soot: rough idle, hesitation or loss of low-end torque can point to a clogged EGR valve or intake manifold soot build-up.
• Underbody and rear subframe/wheel-arch corrosion: check for rust around rear suspension mounts and the underside if the car has seen coastal or salted roads.