2022 MG ZS Exclusive VTI-Tech 1.5L Petrol · OV22 EBX

The MOT history for this 2022 MG ZS presents a broadly reassuring roadworthiness picture but with one specific emissions concern that warrants scrutiny. Two tests appear on file: a pass and a fail both recorded on 19 January 2026, followed by a clean pass from February 2025. The failure was solely related to exhaust carbon monoxide content at idle exceeding the statutory limits under item 8.2.1.2 (b) of the inspection manual, which points to a combustion or emissions control issue rather than any structural or mechanical integrity concern. The immediate subsequent pass with no defects recorded suggests the issue was rectified, though the absence of advisories means the underlying cause and the component replaced or serviced is not documented in the official record. For a 1.5-litre VTi-Tech petrol unit at this age and mileage, a single idle CO exceedance is not unusual and can stem from a faulty lambda sensor, deteriorated spark plugs, a clogged catalytic converter, or simply a one-off tuning irregularity, but it does mean the emissions system has already shown a measurable deviation from standard at this early stage. With roughly 29,522 miles recorded over four years, the vehicle accumulates around 7,380 miles annually, which is broadly consistent with typical private use. There is a substantial gap between the February 2025 test and the January 2026 test, during which mileage progression cannot be verified from the data provided, but the overall odometer reading remains low for the vehicle's age. This relatively modest annual mileage means wear on major mechanical components such as the clutch, brake friction material, suspension bushes, and drivetrain should be proportionally lighter than on a high-mileage equivalent, though low annual mileage also introduces the consideration of components susceptible to deterioration through infrequent use, such as the 12V battery and brake discs corroding at the rubbing surfaces. The fact that the previous test passed with no advisories and the most recent pass was achieved cleanly after the emissions repair indicates that whatever was addressed in late January 2026 appears to have restored full compliance. For a prospective buyer, the immediate focus should be on confirming the durability of the emissions repair. During a test drive, pay particular attention to the exhaust note at idle from cold, as a rough or uneven tickover can indicate incomplete combustion or a failing lambda sensor; the engine should settle to a smooth, consistent idle within a couple of minutes of starting. Ask for documentation showing what was done to clear the 8.2.1.2 (b) failure, whether it was a component replacement such as the oxygen sensor or catalytic converter, a tune-up, or simply a re-test after the engine had been run. Listen for any hesitant throttle response, flat spots under acceleration, or a noticeable drop in fuel efficiency, all of which could suggest the underlying cause has not been fully resolved. A physical inspection should also include a check of the exhaust system for blue or excessive white smoke from the tailpipe during a cold start, which would indicate oil consumption or coolant issues affecting combustion quality. Feel for any rough vibration through the steering wheel or cabin at idle that could point to misfires. Beyond the documented emissions item, the clean advisory record means there are no specific suspension, brake, or corrosion items flagged for follow-up, so a standard pre-purchase evaluation of the brake pedal feel, steering response over uneven surfaces, and absence of warning lights on the dashboard should suffice to confirm general condition. Given the relatively low mileage and short test history, a fresh emissions printout from any subsequent MOT or a handheld diagnostic scan reading would provide added assurance that the combustion and catalyst system remains within acceptable parameters before purchase.