2016 Audi A1 1.6L Diesel · HJ66 WHG

A pattern of recurring exhaust mounting defects and escalating braking concerns defines the mechanical history of this 2016 Audi A1, with two dangerous brake and tyre failures recorded at the 2021 test followed by persistent advisories on the front down pipe mounting. The most recent outcome on 8 October 2025 was a pass, but only after a same-day failure in which the horn was found not working and the supplementary restraint system warning lamp indicated a fault, both categorised as Majors under the strictness of current MOT criteria. Earlier tests in 2022 and 2023 were completely clean, but the trajectory has clearly shifted back into a more defective state, with the exhaust mounting advisory appearing at both 2024 and 2025 and the tyre condition advisories stacking up in 2024 alongside cuts and perishing on both front tyres. Across seven recorded tests spanning 2020 to 2025, there have been two failures, three Majors, two Dangerous defects, and multiple recurring advisories, indicating a vehicle that has moved beyond its period of clean roadworthiness into one requiring closer scrutiny of consumables and safety systems. With 137,884 miles on the odometer against a ten-year age, this A1 has averaged roughly 13,788 miles per year, which is substantially above the typical UK annual figure of around 7,000 to 8,000 miles. There are no significant gaps in the testing record, with annual tests recorded consistently from 2020 through 2025, suggesting the car has been in regular use rather than left standing for extended periods. Mechanically, high annual mileage of this magnitude places considerably greater demand on the braking system, suspension bushes, coil springs, anti-roll bar links, clutch or dual-clutch mechatronics, and exhaust mounting hardware, all of which are subjected to far more thermal and mechanical cycles than on a lower-mileage example. The fact that wear-related brake disc pitting and a dangerous brake pad failure were recorded as early as 2021, when the vehicle would have been around 95,000 miles, is consistent with this usage level, and continued deterioration of related components should be anticipated as mileage climbs further towards 140,000. Given the specific components flagged in the record, a prospective buyer should focus on the front exhaust down pipe and its mounting bracket, which has now appeared as an advisory at two consecutive tests. On inspection, listen for any metallic buzzing, rattling, or ticking from beneath the engine bay, particularly on cold start or over bumps, and check for visible separation of the down pipe from its rubber mount or evidence of aftermarket repair attempts. The 2025 Major for the airbag warning lamp demands a full diagnostic scan via VCDS or equivalent to retrieve the specific SRS fault code, as simply clearing the light without addressing the root cause will result in another immediate failure and could indicate a faulty seat occupancy sensor, wiring harness chafe, or crash data stored in the control module. Both front tyres were flagged in 2024 for cuts and perishing, so a thorough check of all four tyres for sidewall cracking, tread depth, and manufacture date is warranted, alongside inspection of the offside front and rear valve stems which were both recorded as slightly damaged. The braking system warrants particular attention given the 2021 dangerous pad failure and the accompanying advisories on both rear discs being worn and pitted. On a test drive, expect to feel any judder through the brake pedal or steering wheel under firm deceleration, which would indicate the rear discs have likely deteriorated further since the 2024 advisory and may now require replacement rather than refurbishment. Listen for any binding or dragging sensation from the rear calipers, particularly after the car has been driven for some distance, and verify that the handbrake holds the vehicle on an incline without excessive travel. Finally, with high mileage and known wear history, the suspension should be exercised over uneven surfaces to detect clonks from worn anti-roll bar drop links, top mount bearings, or lower control arm bushes, all of which are typical wear items on a vehicle of this age and accumulated mileage, and any knocking or wandering under braking should be investigated as a priority before committing to purchase.