2018 KIA Optima 1.7L Diesel · SC18 XMB

The most recent MOT test on the 2018 Kia Optima occurred on 2026-07-22 and resulted in a passing grade, though this follows a series of failures and advisories over the preceding four years. The pattern of defects suggests a mixed maintenance history, with recurring issues primarily centred on brake system integrity, particularly the rear brake discs, which have been flagged as worn or pitted in multiple tests. The ABS fault and electronic parking brake failure further indicate underlying mechanical wear or potential electrical component degradation, which may require attention before they escalate into more critical road safety concerns. While the latest MOT cleared the vehicle, the history of unresolved advisories—particularly around brake condition and structural undertray security—demonstrates that the owner should prioritise addressing these before they compromise the vehicle’s roadworthiness or safety. The vehicle’s recorded mileage of 61,689 miles for an eight-year-old model reflects a moderate annual usage rate of approximately 7,711 miles per year, which is within the expected range for this age group. However, the presence of multiple MOT failures—especially those linked to brake wear and ABS issues—suggests that the vehicle may have undergone higher-than-average stress, potentially from frequent driving, aggressive braking, or prolonged periods of heavy load. The gaps between MOTs, particularly the two-year interval between 2022 and 2024, could indicate periods of reduced use, but the subsequent failures suggest that the vehicle was not maintained at a level sufficient to mitigate wear. This pattern raises concerns about the long-term reliability of critical components, particularly the brakes and electrical systems, which are prone to cumulative damage over time. For the prospective buyer, the most urgent concerns stem from the recurring brake-related advisories and failures. The rear brake discs show significant pitting and wear, which, if left untreated, could lead to reduced braking efficiency, increased stopping distances, or even disc failure. During a test drive, listen for uneven brake pedal travel, a grinding or squealing noise when applying brakes, or excessive heat radiating from the rear wheels. Additionally, check for brake fluid leaks under the vehicle or a spongy pedal feel, which may indicate hydraulic system issues. The ABS fault should be investigated further, as persistent warnings could point to failing sensors, wiring, or pump components. The electronic parking brake failure is particularly critical, as a non-operational system poses a serious risk of unintended vehicle movement, especially on inclines. Immediate professional inspection and repair of these systems are essential to ensure the vehicle’s safety. Beyond the immediate defects, the buyer should conduct a thorough physical inspection of the vehicle’s structural and fluid integrity. Given the vehicle’s age and the advisories around the undertray, visually inspect the underside for any signs of corrosion, loose fasteners, or damage to the fuel tank and surrounding components. Check for fluid leaks under the engine bay, transmission area, and beneath the vehicle, particularly around the brake and cooling systems, as these can indicate failing seals or hoses. The tyre advisories from previous MOTs highlight worn edges or uneven wear patterns, which may suggest alignment or suspension issues. Inspect the tyres for sidewall cracks or perishing, which can weaken the rubber and reduce safety, especially on older vehicles. Finally, since the vehicle has not undergone a service in the last year, verify the condition of the 12V battery, as prolonged disuse can lead to corrosion or failure. Test the battery voltage and clean the terminals, and consider a professional check of the electrical system given the ABS and parking brake issues. Additionally, check the fluid levels in the cooling system, brake fluid reservoir, and transmission, ensuring they are topped up and free from contamination, as fluid degradation over time can exacerbate wear on components like the brake discs and ABS modules.