i30buyer's guide

The GD i30 sold in huge numbers across Europe and has aged well — on condition. The problem is the diesel variants, which punish short-trip owners hard through DPF, EGR, and emissions system faults, and the timing belt service record that many private sellers cannot produce. Miss either of those two checks and what looks like a sensible family hatch can become a car you cannot sell on without a four-figure repair. This guide walks you through what to verify before you commit.

This guide covers ten documented issues: AdBlue/DPF/EGR emissions fault, timing belt/chain service risk, DSG/automatic/clutch judder, coolant leak or water pump fault, infotainment/software electrical faults, suspension knocks and tyre wear, brake corrosion or EPB fault, panoramic roof or boot water leak, turbo boost leak or actuator fault, and recall/campaign status. Each fault has a field check and a real repair-cost range.

A GD i30 with a full timing belt history, clean emissions scan, and documented service stamps is a genuinely capable used buy. The checks in this guide take less than thirty minutes and will tell you whether the car in front of you is one of those or not.