2021 Mercedes-Benz S-Class 2.9L Diesel · WA70 OVX

The Mercedes-Benz S-Class passed its most recent MOT on 23 January 2026 at 77,836 miles with no defects recorded, indicating current roadworthiness is acceptable. The maintenance trend appears stable on paper, though the test history shows two immediate fail-pass pairs that warrant scrutiny rather than confidence. Mileage accumulation on this 2021 vehicle is high for its age at roughly 15,567 miles per year. The record shows 17,869 miles at the February 2024 test, jumping to 41,861 miles by 11 February 2025, then 77,836 miles by January 2026. That equates to around 24,000 miles in the first interval and 36,000 in the second, a clear acceleration in use. Such a pattern points to sustained motorway or business use rather than gentle private ownership. The January 2026 fail on 20 January at 77,836 miles with no defects logged, followed by a pass three days later at identical mileage, suggests an administrative or documentation issue rather than a mechanical fault. The same anomaly occurred in February 2025: a fail at 41,861 miles on 11 February, then a pass at 41,863 miles on 13 February. These repeated fail-pass cycles with zero recorded defects imply the previous keeper addressed a non-itemised refusal or retest procedure, not worn consumables. A buyer should still commission an independent inspection of suspension bushes, brake discs, and coil springs given the high annual mileage and rapid accumulation after 2024. The DVSA data shows no advisories for corrosion, exhaust emissions, or binding calipers, but the sparse history offers limited insight into structural integrity. Verify service records align with the 36,000-mile jump between 2025 and 2026 to confirm drivetrain care kept pace with use.