2015 Volkswagen Passat SE TDI Bluemotion Tech 1.6L Heavy oil · GD65 WNE

A defining feature of this Passat's MOT record is a persistent cluster of dashboard warning-light advisories spanning four consecutive tests from 2021 through 2023, with a clean pass and no recorded defects on the most recent examination dated 10 January 2026. The repeated illumination of the service light across the 2021, 2022 and 2023 tests, followed by the additional advisory of a flashing heater plug light in October 2023, points to either unresolved electronic management issues or a recurring reluctance to address minor dashboard warnings promptly. While the 2025 and 2026 tests show no defects and the vehicle is currently roadworthy, the pattern of advisory accumulation earlier in the record should prompt a buyer to investigate what warning conditions were historically flagged, whether diagnostic trouble codes were ever extracted, and whether any underlying faults were rectified or simply cleared. The absence of any structural, braking, suspension or corrosion advisories throughout the entire eight-test history is a positive indicator of basic mechanical integrity, though it does not eliminate the possibility of wear that falls below advisory thresholds. With eight MOT tests recorded over an eleven-year period and 104,028 miles on the odometer, the vehicle has averaged roughly 9,457 miles per year, which is broadly consistent with typical private use for a car of this age. The mileage progression between tests is steady and continuous, with no significant gaps suggesting long periods off the road and no abrupt jumps that might indicate clock tampering or odometer discrepancies. There is a noticeable interval between the 2023 test in October and the 2025 test in January, spanning roughly fifteen months, which may reflect a change in ownership or a period of reduced use, but nothing in the mileage suggests extended lay-up. At this mileage, attention should logically turn to higher-wear consumables such as brake discs and pads, clutch friction material on the manual variants, and suspension bushes and shock absorbers, even though none of these items have yet appeared as advisories on the test record. The tyre-related advisories warrant close inspection at the point of purchase. In October 2021, both rear tyres were recorded as worn low at 3-4mm, indicating accelerated rear-axle wear, and a further advisory in June 2019 noted a cut on the offside rear tyre, which though not deep enough to fail raises questions about kerbing damage or impact injuries to the sidewalls. On a test drive, listen for any thumping or vibration through the rear of the car at speed, which could indicate deformed sidewalls or internally damaged tyres, and inspect the current rear tread depth carefully against the legal 1.6mm minimum, as tyres approaching the end of their service life on this axle will wear through relatively quickly. The cut sidewall area should be checked visually for any bulging, cracking or slow air leakage, and the wheel alignment should be verified, as uneven rear-tyre wear often points to geometry issues or worn rear suspension bushes. Given the recurring service-light advisories and the 2023 heater plug light advisory, a prospective buyer should prioritise a full electronic diagnostic scan using a VAG-compatible tool such as VCDS or an OBD-II reader capable of accessing VW-specific modules. Persistent service-light illumination on a diesel Passat of this era often correlates with injector balance issues, DPF saturation, EGR valve faults, or sensor degradation, while a flashing heater plug warning specifically suggests a glow plug circuit fault or, on certain engines, an early indicator of injector or compression-related issues. During a cold-start test, observe whether the engine fires immediately or requires extended cranking, listen for any diesel knock or rough idle that smooths out as it warms, and check for excessive smoke from the exhaust on start-up. The test drive should also include firm braking from higher speeds to confirm straight-line stability, bumps at low speed to expose worn suspension components, and steady-state motorway driving to detect any vibrations, pulling, or warning-light reactivation under load, as the heater plug advisory in particular may resurface when the engine is placed under thermal or electrical stress.