2014 Hyundai IX35 1.7L Diesel · HT14 BCU

The 2014 Hyundai i35’s most recent MOT test on 2026-08-31 was passed with two persistent advisories concerning the rear brake discs, both showing signs of wear but not reaching critical thresholds. This follows a pattern of fluctuating test outcomes over the past four years, with the vehicle failing in 2023 and 2024 due to more severe brake-related issues, including dangerously thin offside rear brake pads, binding service brakes, and a malfunctioning tyre pressure monitoring system. While the latest test indicates a return to compliance, the historical record suggests that brake system integrity has been a recurring concern, warranting heightened scrutiny during inspection. The advisories from 2025 also point to an oil leak and obstructed rear child seat inspections, which, if unresolved, could lead to further test failures or hidden mechanical issues over time. With a recorded mileage of 140,331 miles and an approximate annual usage rate of around 11,694 miles, the i35’s usage aligns reasonably well with its age, reflecting a moderate to heavy workload rather than light or idling conditions. The absence of extreme mileage spikes or prolonged periods of inactivity suggests consistent driving, which accelerates wear on consumables like brake pads, tyres, and suspension components. However, the presence of both low and high mileage advisories—such as tyre edge wear and cracking, as well as brake system failures—indicates that the vehicle has undergone significant operational stress, particularly in braking and suspension systems. This pattern underscores the importance of addressing wear progression before it escalates into costly repairs or safety hazards. For a prospective buyer, the most critical areas to inspect during a physical examination are the rear brake system, given the recurring advisories and past failures. Check the rear brake discs for consistent pitting, scoring, or warping, and listen for uneven brake pedal travel or grinding noises when applying the service brake, especially on the offside rear. The binding service brake from the 2024 MOT failure may indicate caliper binding or warped discs, which could cause uneven braking performance or require professional assessment. Additionally, verify that the oil leak observed in 2025 has been resolved, as an ongoing oil loss could lead to engine damage or reduced lubrication efficiency. Inspect the rear tyres for consistent wear patterns, particularly on the shoulder edges, and look for signs of dry rot or sidewall cracking, which can compromise tyre integrity and safety. Beyond the brake system, the tyre pressure monitoring system (TPMS) malfunction recorded in 2024 is a notable red flag, as it suggests a deeper electrical or sensor issue that may affect tyre pressure monitoring and, by extension, fuel efficiency and handling. Ensure the system is fully functional and that all sensors are correctly installed and calibrated. The battery’s insecure mounting from the 2023 MOT may not pose an immediate risk but should be checked for corrosion or loose terminals, particularly if the vehicle has been left stationary for extended periods. Given the vehicle’s age, consider a comprehensive fluid check, including brake fluid, coolant, and transmission fluid, as these fluids degrade over time and may require replacement to maintain optimal performance. Finally, verify that the service history is up to date, especially for the brake system, suspension, and timing belt, as these components often require scheduled maintenance at specific mileage or calendar intervals. If the vehicle has been driven at a moderate pace, a thorough inspection of the suspension for worn bushes, coil springs, or alignment issues is also advisable, as these can contribute to handling degradation.