2023 Mercedes-Benz GLS 600 Maybach Mhev 4MATIC A 4.0L Hybrid electric (clean) · KV22 ALE

The 2023 Mercedes-Benz GLS 600 Maybach MHEV demonstrates a generally clean roadworthiness record with one notable failure that occurred earlier in the current calendar year. The most recent MOT test on 2026-07-02 returned a PASS with no defects recorded, and subsequent tests in late July 2025 and early July 2026 also cleared with full marks. While the 2025-07-03 test resulted in a FAIL due to a Supplementary Restraint System warning lamp (category 7.1.6 (a)), the vehicle has since stabilised with clean outcomes in each following test, suggesting that the underlying systems have recovered and the initial issue has been resolved. Overall, the mechanical history paints a picture of a car that remains roadworthy despite a single setback, with no active outstanding concerns as of the latest assessment. Regarding mileage, the recorded figure of 20,857 miles across approximately three years of ownership translates to an average annual accumulation of roughly 6,950 miles, which aligns with typical usage patterns for a vehicle of this model and age. The gap between the 2024-05-08 and 2025-07-09 tests spans nearly two months before another clean pass, and the subsequent interval extends from mid-July 2025 through July 2026 where the car repeatedly achieved a PASS result. This steady progression of test results indicates that the engine, transmission, and major subsystems have maintained their reliability over the past several years, with no evidence of accelerated wear that would normally correlate with higher mileage profiles. The 2025-07-03 Supplementary Restraint System warning warrants particular attention during a test drive, as this category typically relates to the operation of seatbelt pretensioners or airbag systems associated with occupant protection. Upon restart, verify that the warning lamp extinguishes immediately and that no additional lights illuminate concurrently. The front window tint noted in 2025-07-04 was classified as excessively tinted but deemed non-adverse to driver visibility, meaning no correction is required from a legal standpoint, though a visual confirmation that the tint does not obstruct the lower portion of the windshield is advisable. Neither of these issues represents a structural or safety concern beyond ensuring the SSR function is fully operational post-repair. For a prospective buyer, conduct a thorough test drive focusing on the suspension and braking systems given the cumulative mileage. Listen for any knocking, clunking, or bounding noises when navigating uneven surfaces, which could indicate worn suspension bushings, degraded control arm mounts, or deteriorating shock absorber components. Inspect the brake pedal for any vibrations, pulsations, or spongy feel that might suggest caliper or rotor wear, particularly considering the high annual mileage accumulation. Re-check the SSR warning indicator immediately after starting the engine to confirm the system is functioning correctly, and verify that the front windows remain clear enough for safe driving. These focused checks will help identify any remaining latent issues before committing to purchase.