2021 Volkswagen ID4 MAX Electric · AV71 DFP

The 2021 Volkswagen ID4 MAX’s most recent MOT test on 2026-05-19 resulted in a clean pass, marking a return to compliance following two previous failures within the past year. The vehicle’s MOT history reveals a pattern of stability prior to 2024, with two consecutive passes in 2024 and 2025, followed by a dangerous failure for exposed tyre cords in September 2024 and a major failure for brake efficiency and fluctuation in May 2025. These failures suggest a period of either heightened wear or potential underlying issues with the braking system and tyre integrity, particularly around the offside rear tyre. While the latest test has resolved these concerns, the buyer should remain vigilant, as recurring defects in the brake subsystem—particularly fluctuating pedal response and efficiency—could indicate deeper mechanical or hydraulic issues, such as worn brake pads, contaminated brake fluid, or failing brake master cylinders or calipers. The recorded mileage of 39,533 miles for a 2021 model represents a moderate annual usage rate of approximately 7,907 miles per year, which is within the expected range for a vehicle of this age and class. Such mileage accumulation is typically consistent with regular driving patterns, though the absence of a service history or odometer verification means there is no direct confirmation of actual operational wear. The lack of significant mileage gaps suggests the vehicle has been in use, but the absence of a service book or service records complicates an assessment of wear progression on critical components like suspension, drivetrain, and electrical systems. Higher mileage generally accelerates wear on consumables such as brake pads, tyres, and engine oil, while lower mileage may indicate prolonged periods of inactivity, potentially leading to standing corrosion in the brake system, battery degradation, or fluid degradation in sealed components. Given the recent MOT failures and the need for immediate attention, the buyer should prioritise a thorough inspection of the braking system. The brake efficiency and fluctuation failures point to potential issues with the rear brake system, including binding calipers, corroded brake discs, or hydraulic leaks. On a test drive, listen for uneven brake pedal response, shuddering or pulsation during braking, and any unusual noises from the rear wheels, which could indicate warped discs or seized components. Additionally, visually inspect the offside rear tyre for signs of further cord exposure or tread degradation, as this failure was classified as dangerous. The buyer should also check for fluid leaks around the brake master cylinder, calipers, and rear wheel bearings, and ensure the brake fluid level is within specification, as contaminated fluid can exacerbate pedal response issues. Immediate servicing of the brake system is advised, ideally within the next 10,000 miles or six months, depending on the severity of the defects. For the broader vehicle assessment, the buyer should conduct a physical inspection focusing on the tyre condition beyond the MOT test, particularly for sidewall cracking or perishing, which can occur even with moderate mileage over time. Given the vehicle’s age and the potential for prolonged inactivity, check for signs of standing corrosion on the brake components, exhaust system, and undercarriage, as moisture and lack of movement can accelerate rust. Verify the 12V battery health by testing its charge capacity and ensuring all electrical connections are clean and secure, as a failing battery can lead to poor starting performance or electrical gremlins. Finally, while the MOT history is clean aside from the recent failures, the buyer should consider a full service check within the next 12 months to address any potential wear on suspension bushes, coil springs, and other consumable components, as well as fluid servicing for the engine oil, differential, and transmission fluids, which should be replaced according to the manufacturer’s recommendations—typically every 60,000 to 100,000 miles or two years, whichever comes first.