2021 Mercedes-Benz GLE 350 AMG Line Prem DE 4M A 1.9L Electric diesel · DA71 MPE

This Mercedes-Benz GLE 350d has demonstrated a clean and unblemished MOT record across three consecutive tests, with passes recorded on 18 January 2024, 17 January 2025, and 17 October 2025, none of which raised any advisories, defects, or failures. The absence of any flagged items over nearly two years of testing suggests that the wear-related components typically monitored under the DVSA inspection regime, including suspension components, braking system, steering, exhaust integrity, and underbody structure, have remained within serviceable limits at the point of each assessment. While a clean MOT history is reassuring, it is worth noting that the test is a snapshot of roadworthiness on the day and does not guarantee the condition of non-tested items such as the interior, infotainment, air suspension compressor, or the common oil leaks associated with Mercedes-Benz diesel V6 units. With 81,162 miles accumulated over approximately five years, this GLE is covering around 16,000 miles per year, which is considerably above the national average and points to a vehicle that has been used as a high-mileage cruiser rather than a weekend or short-journey car. This level of usage has direct mechanical implications: the engine and drivetrain will have endured prolonged thermal cycling and load, the diesel particulate filter will have undergone many active regeneration cycles, and the twin-turbo V6 will have accumulated significant wear on its timing chain, injectors, and turbo actuators. The 4MATIC all-wheel-drive system, transfer case, and nine-speed automatic gearbox will also have seen substantial workload, meaning fluid change histories for the transmission and differentials are particularly important to verify. Braking components, tyres, and suspension bushes are likely to be approaching or past mid-life wear thresholds, even if the most recent MOT did not flag them. Given the high mileage and the absence of advisory data, a prospective buyer should prioritise a thorough pre-purchase inspection by a Mercedes-Benz specialist or an independent with access to STAR diagnostic systems. Specific areas to scrutinise include the air suspension system, particularly the compressor, valve block, and air struts, which are known wear items on the W167 GLE and can present with sagging overnight or warning messages on the dashboard. The diesel V6 OM656 engine should be checked for oil seeps from the front and rear crankshaft seals, the turbo oil feed lines, and the intercooler pipework, alongside a coolant analysis for signs of EGR or head-gasket compromise. A scan for stored fault codes in the SCR system, AdBlue injector, and NOx sensors is also essential, as diesel emissions system repairs on this platform can be costly. On a test drive, listen for any clonks or knocks from the front suspension over speed bumps and uneven surfaces, which would indicate worn thrust arms, anti-roll bar links, or top mount bearings. Feel for any vagueness in the steering, uneven tyre wear suggesting misalignment, or pulling under braking, which may indicate warped discs or sticking calipers. With the engine running from cold, listen for any diesel knock, timing chain rattle on startup, or excessive turbo whistle, and check for white or blue smoke from the exhaust. Confirm that the nine-speed automatic shifts smoothly through all gears without hesitation or flare, and verify the service history with particular attention to the automatic transmission fluid and filter, the 4MATIC transfer case oil, and the brake fluid replacement schedule, as these are often neglected on high-mileage examples and can lead to expensive remedial work if overdue.