2020 Tesla Model 3 Performance AWD Electric · WN20 DDF

A persistent brake-disc wear pattern defines the mechanical history of this 2020 Tesla Model 3 Performance, with the most recent test on 2025-09-04 passing but flagging both front and rear discs as pitted and scored beyond the threshold of cosmetic concern. This is the second consecutive year in which the brake rotors have been recorded as worn, having first appeared as advisories at the 2024-09-06 test where the vehicle passed despite rust build-up on the disc surfaces. The progression from rust-stained surfaces in 2024 to pitted and scored friction surfaces in 2025 indicates the discs are now past the early-stage oxidation phase and entering a measurable wear state. Under the earlier 2024-09-06 inspection, the same test resulted in a fail with a dangerous nearside rear tyre tread defect below the 1.6mm minimum and a major tyre pressure monitoring system malfunction, both of which were rectified before the pass recorded the same day. The 2023-08-21 cycle similarly produced a fail driven by the TPMS inoperative and an offside rear tyre at the legal edge with a nail intrusion, suggesting a recurring theme of tyre condition and pressure monitoring rather than progressive structural or suspension deterioration. With 33,539 miles recorded over approximately six years, this Model 3 has covered around 5,590 miles annually, which is well below the typical accumulation for a modern performance saloon and consistent with either secondary-car status or extended periods of low use. Annual mileage below the 6,000-mile threshold tends to produce uneven wear patterns rather than uniform component consumption, particularly on brake components that rely on regular application to shed surface corrosion and maintain pad-to-disc contact. The relatively sparse mileage also explains why the discs are surfacing as advisories year after year without advancing to failure status; light use on cast iron or composite rotors accelerates pitting and surface oxidation without the heat cycling necessary to refinish the friction surface. There are no multi-year gaps in the testing record, which indicates the vehicle has remained on the road and registered throughout the period rather than being stored or SORN, so the brake and tyre findings reflect continuous in-service wear rather than post-storage defects. A prospective buyer should treat the brake discs as the primary inspection point and budget for replacement if the existing units measure at or near the manufacturer wear limit. On a test drive, listen for any brake pedal pulsation or vibration under firm deceleration, which would indicate disc runout or thickness variation resulting from the pitting already recorded. Inspect the discs visually through the wheel spokes for a pronounced lip on the outer edge, deep grooving, or blueing from heat stress, all of which point toward the need for machining or replacement rather than simply pad swap. The Model 3 Performance's regenerative braking system does most of the slowing under normal driving, so when the friction brakes are finally applied they tend to do so at lower speeds and with less heat, accelerating cold-corrosion pitting on vehicles used predominantly around town. Equally important is a thorough check of the tyre pressure monitoring system, which has been flagged as malfunctioning on both test cycles where the vehicle failed. Verify that all four sensors communicate with the vehicle status menu and that pressure readings populate immediately after a cold start, as intermittent sensor battery failure is a known issue on vehicles entering their sixth year. Examine each tyre closely for age-related sidewall cracking, particularly on the rear axle where the Model 3 Performance carries its weight bias, and confirm uniform tread wear across the axle since the offside rear was previously noted as worn on edge. Finally, inspect the underside for any signs of impact damage to the high-voltage battery skid plate or suspension components, as the low mileage reduces the likelihood of major mechanical failures but does not protect against pothole or kerb strikes sustained during occasional spirited driving.