2008 Audi A3 1.8L Petrol · LC08 KHO

A rear brake failure classified as Dangerous and the corresponding brake pad defect on the offside rear are the defining mechanical events in this Audi's MOT record. The 2025-10-27 test was failed outright for an offside rear brake disc seriously weakened and offside rear brake pads worn below 1.5 mm, with the very next day's pass retaining advisories for oil leak and nearside front tyre inner-edge wear. Aside from that isolated braking episode and a 2019 exhaust gas leak advisory, the previous six tests between 2020 and 2024 were completed without advisories, so the broader record is largely clean with one sharp, safety-critical incident rather than a chronic pattern of deterioration. The latest pass on 2025-10-28 should therefore be read with the failed test still firmly in mind, as the brake components will only be one bedding-in cycle old at most. Annual mileage averages around 5,981 miles over an eighteen-year life, which is low for a vehicle of this age and points to either sustained light use or extended periods of inactivity. There are no unusual gaps between annual tests and no sudden jumps in recorded odometer readings that would suggest a tow-in, clock discrepancy, or heavy recent use. Mechanically, low accumulation tends to be kinder to engines, clutches and gearboxes but harder on dormant components such as brake calipers, which can seize through lack of use, and on rubber items including bushes, boots and tyres, which harden and crack with age regardless of mileage. The offside rear brake disc failure on a low-mileage car is consistent with caliper seizure or prolonged pad corrosion rather than pad wear from frequent braking, and that risk warrants direct attention. A prospective buyer should focus on the braking system first, particularly the offside rear caliper, slider pins and handbrake mechanism, as the weakened disc and sub-1.5 mm pads suggest the friction surface had been generating heat against compromised hardware. Inspect both rear discs for lipping, surface scoring and blueing, and check that the handbrake holds firmly on a slope without creeping, as a seized or sticking rear caliper on this platform commonly returns through MOT. Listen on the test drive for a dragging sensation, rear wheel binding when reversing, or pulling under light braking, and verify that the brake pedal feels firm rather than spongy. The nearside front tyre inner-edge wear advisory from the same test should also be acted upon, as uneven inner-edge wear on an Audi A3 typically indicates worn front suspension components rather than a simple alignment issue. The oil leak advisory, recorded at both the fail and the following pass, is described as not excessive but is worth tracing because oil migrating onto exhaust manifolds produces a characteristic acrid smell on warm-up and can eventually mask the source. Ask to see the underside or at minimum a photograph of the engine and sump area, paying particular attention to the cam chain tensioner, valve cover gasket and turbo oil feed lines on diesel variants, all common seep points on this generation. The 2019 exhaust gas leak advisory has not recurred, suggesting it was resolved, but listen on the test drive for any ticking or hiss from the exhaust under load, particularly at the manifold gasket or flex joint. Finally, given the low annual mileage, check that the battery holds charge under cranking, that all warning lamps extinguish promptly, and that the air conditioning produces cold air, as these are the systems most likely to have deteriorated from standing rather than from use.