2004 MASERATI QUATTROPORTE4.2L PETROL

This Maserati Quattroporte has just failed its most recent MOT on 15 May 2026 due to a supplementary restraint system fault—a safety-critical issue that must be resolved before the vehicle can be driven legally. The same test also recorded damage to both rear tyres, noted as slightly cracking or perishing. These rear tyre defects have now appeared in back-to-back MOT records, suggesting they were not addressed after the May 2026 failure. The supplementary restraint system warning is the most serious concern here. This fault affects airbag deployment and represents a genuine safety risk in the event of a collision. Diagnosis and repair will be needed from a specialist, and costs can range widely depending on whether the issue lies in wiring, sensors, or the control module itself. This is not a minor advisory. The rear tyre condition is also worth taking seriously. The fact that both rear tyres showed the same damage pattern in consecutive tests indicates they have been left uncorrected for weeks. Perishing suggests age-related degradation of the rubber compound, which typically means the tyres are either original or very old.