2014 Dacia Duster 1.5L Diesel · SC14 YTY

A persistent corrosion problem on the underbody brake pipework dominates the mechanical picture on this 2014 Dacia Duster, with the issue escalating from advisory status to outright failure across two consecutive test cycles. In early March 2025 the car failed on major defects for excessively corroded near- and offside brake pipes running front to rear, accompanied by a non-functioning horn, while passing three days later only after rectification with the rear brake pipework corrosion noted again as an advisory. By February 2026 the pattern repeated, this time with both a rear nearside and rear offside brake pipe failing outright on corrosion, alongside a major defect on the offside front track rod end ball joint for excessive play. The car then passed on 26 February 2026 with no defects recorded, confirming the immediate repairs were carried out, but the recurrence of identical corrosion findings within a twelve-month window strongly indicates that the underlying chassis condition has not been fully resolved and that further sections of the rigid and flexible brake line network are likely approaching the end of their service life. Mileage accumulation on this Duster is broadly in line with what one would expect for a twelve-year-old vehicle, with the 80,845 miles on the odometer translating to an annual average of roughly 6,700 miles, a figure consistent with regular but modest daily use. There are no extended gaps in the testing record, and the mileage progression between tests reflects steady, ordinary utilisation rather than any signs of clocking or prolonged lay-up. Mechanically, this kind of usage pattern tends to be kinder to high-wear items such as the clutch, turbocharger and internal engine components than very high annual mileages would be, but it does not insulate the vehicle from the sort of age-related underbody degradation that has clearly taken hold here. The combination of average mileage and advancing chassis age is entirely consistent with the brake pipe corrosion theme running through the history. Any prospective buyer should treat the brake pipework as the single most important area to physically inspect, ideally with the vehicle raised on a ramp so that the full length of the lines can be examined for surface rust, pitting, blistering under the paint and flaking, paying particular attention to the front-to-rear runs along the chassis rails and the unions at the rear axle. Because corrosion has appeared in different sections across consecutive tests, it is reasonable to assume the entire system may be nearing the point of requiring a full replacement rather than localised patching, and a quotation for this work should be obtained before purchase. The track rod end failure from February 2026 is also worth verifying has been properly resolved, as a ball joint with excessive play is a serious steering safety concern; on a test drive, listen for any knocking or rattling from the front end over uneven surfaces, particularly on full lock, and feel for any vagueness, wandering or inconsistent self-centring in the steering, all of which could indicate that the replacement part is worn or incorrectly torqued. Beyond the brake and steering items, the advisory noting front tyre shoulder wear from both 2025 tests suggests the front alignment may be out of specification or that the front suspension components, including bushes, wishbone links and the strut top mounts, could be contributing to uneven contact patch wear. On a road test, the buyer should pay close attention to any pulling to one side under braking, a soft or spongy brake pedal suggesting air ingress during the recent pipework repairs, and any binding or juddering from the brakes that might indicate a caliper that has seized through lack of use. The horn failure from the 2025 test is a minor point but should be confirmed as functional, and a general check of all exterior lights, washers and wipers is advisable given the age of the vehicle. Overall, the Duster passed its most recent test, but the repeat corrosion failures warrant a cautious approach and a pre-purchase inspection focused firmly on the underbody and steering geometry.