2021 Mercedes-Benz EQA 250 AMG Line Premium Electric · LC71 YDN

The defining mechanical story for this EQA is concentrated almost entirely on tyre and wheel-related issues rather than on structural, braking, or suspension wear, with two failures and three advisories across the recorded MOT history all revolving around the nearside and offside front wheels. The most recent test on 23 April 2026 returned a clean pass with no advisories, suggesting that the immediate concerns which led to the dangerous failure three days earlier on 20 April 2026 were addressed with replacement tyres. However, the underlying pattern reveals that tyre monitoring has been the weakest point in this vehicle's roadworthiness record: a dangerous tread depth failure on both front tyres in April 2026, a rear tyre fitted contrary to sidewall instructions and a missing front wheel fixing in August 2024, plus repeated nail-in-tyre advisories on the offside front in both August 2024 and August 2025. The repeat nail-in-tyre advisory on the same wheel position across two consecutive tests is a notable red flag worth scrutinising closely, as it could indicate either repeated contact with the same debris hazard or a recurring issue with the wheel's sealing and structural integrity after previous repairs. Recorded mileage of 34,058 miles over approximately five years equates to an annual accumulation of roughly 6,812 miles, which sits broadly in line with typical usage for a privately owned premium electric SUV of this age and provides no immediate mechanical cause for concern. The mileage progression across the four recorded tests shows a steady, consistent increase rather than any sudden spikes or long stationary gaps, meaning the vehicle has been in regular use rather than left idle for extended periods. For an EV of this type, consistent usage is generally favourable for the high-voltage battery pack, drive unit, and associated ancillary components, all of which benefit from regular thermal cycling and state-of-charge movement. The absence of multi-year gaps in testing also means there are no extended lay-up periods that might raise concerns about brake disc corrosion from infrequent use, perished rubber seals, or 12V auxiliary battery degradation, although light annual mileage can still lead to surface corrosion on the rear brake discs due to minimal regenerative braking effort in town driving. Given that the entire failure and advisory history relates to tyres and a single wheel fixing, a prospective buyer should focus the physical inspection squarely on the wheels and tyres rather than expecting broader mechanical defects to surface. On a test drive, listen carefully for any rhythmic thumping or steering wheel vibration that could indicate a deformed sidewall, belt separation, or an unbalanced wheel following a tyre replacement, particularly on the offside front which has twice been flagged for nails. Inspect all four tyres in person, confirming that the sidewall direction-of-rotation arrows match the direction the wheels are currently mounted, as the 2024 failure for a tyre not fitted in accordance with sidewall instructions is a specific and easily recurring mistake during refits. Verify that the correct specification of tyre is fitted across all four corners with matching load and speed ratings, and ask for documentary evidence of the replacement tyres fitted after the April 2026 dangerous failure, including their date of manufacture, as mixing newer front tyres with older rears on an EV with regenerative braking can cause uneven grip and stability control intervention. Beyond the documented tyre concerns, a targeted inspection should also cover the components that an EV of this mileage and age could realistically be developing wear in, even though they have not yet appeared on the MOT record. Check the condition of the rear brake discs and pads by hand through the wheel spokes, as low annual mileage combined with heavy regenerative braking typically leaves the rear friction brakes lightly corroded but with adequate material; surface rust is acceptable but deep pitting or a ridged lip exceeding 1 to 2mm warrants further investigation. On the test drive, pay particular attention to any knocking or clonking over speed humps and uneven surfaces from the front suspension, especially from the offside front where the wheel fixing was once found missing, as a loose or improperly torqued wheel stud can damage the hub and bearing over time. Finally, listen for any unusual whine, clunk, or vibration from the drivetrain under acceleration and regenerative deceleration, as this is the first generation of EQA and any early signs of front electric drive unit or reduction gearbox issues would warrant a diagnostic scan before purchase.