2018 Mercedes-Benz GT 4.0L Petrol · T15 MAD

The vehicle’s most recent MOT test on 2025-09-09 at 31,620 miles confirms a consistent roadworthiness record over five consecutive annual tests, with no defects or advisories recorded. This stability suggests the vehicle has undergone regular, if not meticulous, maintenance, though the absence of any failures does not preclude underlying issues that might not have been detected during standard MOT testing. The tester’s failure to flag any advisories—particularly for high-wear components like suspension bushes, coil springs, or brake binding—implies either diligent servicing or a vehicle that has thus far resisted accelerated deterioration. However, the lack of service history beyond MOTs means critical fluid changes, timing belt inspections, or differential maintenance cannot be confirmed. The recorded mileage of 31,620 miles over eight years—approximately 3,952 miles annually—is unusually low for a vehicle of this age, particularly given the GT’s performance-oriented nature. The consistent annual increments (e.g., 22,360 to 27,215 between 2023 and 2024) suggest the car has not been subjected to heavy usage, which could either indicate light personal use or prolonged periods of storage. There are no gaps in MOT testing, but the absence of higher mileage intervals also raises questions about whether the vehicle has been driven under optimal conditions, potentially accelerating wear on components like brake pads, tyres, or fuel system components. The low mileage does not inherently signal neglect, but it does warrant scrutiny of items that degrade passively over time, such as rubber seals, electrical connections, and corrosion-prone areas. Given the clean MOT history, a buyer should prioritise an in-person inspection of suspension components—particularly the rear trailing arms and bushings, which are common failure points in high-performance vehicles—and verify the condition of brake calipers and discs for uneven wear or binding. The absence of advisories does not rule out subtle issues such as degraded coil springs or worn stabiliser links, which may not trigger MOT failures but could affect handling. Corrosion should be checked at wheel arches, sills, and underbody, especially given the GT’s propensity for underbody rust. Additionally, the fuel system—including injectors and fuel lines—should be inspected for leaks or carbon buildup, as these are not routinely tested in MOTs but can develop silently over low-mileage periods. Finally, the electrical system, including battery health and wiring integrity, should be tested, as prolonged inactivity can lead to parasitic drains or degraded connections.