2018 KIA Optima 1.7L Diesel · RM09 MUD

The most recent DVSA examination on 9 February 2026 resulted in a PASS, although the same date also records a FAIL with a Major defect for a front brake disc that was assessed as significantly and obviously worn. This indicates the vehicle was presented in a substandard condition, the failure was rectified, and it subsequently passed on the same day. Both test entries carry advisories for rear brake pads wearing thin and a coolant leak, which signals that the braking and cooling systems require prompt attention. Comparing the sequence of tests, the 2022 and 2024 examinations were completely clean with no advisories, whereas the 2025 and 2026 tests have shown an accumulation of brake-related advisories and a coolant concern. The trend is therefore one of gradual deterioration rather than stable maintenance, with braking components and cooling system integrity now requiring closer scrutiny. At 50,616 miles over an eight-year service life, this Kia Optima has averaged roughly 6,327 miles annually, which is broadly typical for a vehicle of its age and class. There are no anomalous gaps or sudden mileage surges in the recorded history that would suggest clock inconsistencies or extended periods of standing. This steady, moderate annual usage generally indicates that major drivetrain components such as the engine, transmission, and clutch (if applicable) should have experienced proportionate wear. However, even at moderate mileages, age-related deterioration of rubber, electrical, and fluid-based components continues regardless of use, so calendar-based servicing remains highly relevant for a car approaching nine years old. Given the recurring brake-related advisories and the recent disc failure, a prospective buyer should carry out a focused evaluation of the entire braking system. Inspect the front discs for scoring, lipping, or hot spots, and confirm whether the item was replaced following the Major defect, as a worn disc can produce brake shudder, vibration through the steering wheel under heavy braking, and extended stopping distances. Check the rear pad wear and verify caliper operation, as the repeated rear pad advisories across two consecutive tests may suggest a binding caliper or sticking slider mechanism accelerating pad consumption. On a test drive, listen for scraping or grinding noises, particularly at low speed, and observe whether the vehicle pulls to one side under braking. The coolant leak advisory is of equal concern and warrants immediate inspection, as escaping coolant can lead to overheating and consequential engine damage if left unresolved. A pressure test of the cooling system should be requested, with particular attention paid to the radiator, water pump, hoses, and thermostat housing for seepage or staining. Beyond these specific items, age-appropriate checks are advisable. Inspect all tyres for sidewall perishing and cracking, particularly given the historical advisories for sidewall damage on nearside tyres, and verify even tread wear to rule out suspension misalignment. Examine the exhaust system for corrosion at mounting points and joints, test the 12-volt battery under load to confirm cranking performance, and verify that brake fluid, coolant, and transmission oil have been serviced in line with time rather than purely mileage intervals. Finally, confirm full service book stamping and request evidence of any recent brake or cooling system remedial work to substantiate that the advisories have been properly addressed.