2015 Skoda Superb S TDI CR 2.0L Heavy oil · GF15 CVL

This Skoda Superb presents a mixed mechanical story, defined by an unusually sparse advisory record but two unexplained failures within the test history. Across eight recorded tests since 2019, only one pass, on 25 February 2026, carries any documented defects, and even that record is completely clean. The most recent outcome is a pass dated 25 February 2026, immediately preceded by a failure five days earlier on 20 February 2026 with no defects recorded. A similar pattern occurred in August 2021, when the vehicle failed on 26 August before passing on 6 September, again with no advisories logged on either test. The absence of advisory notes is unusual for a diesel of this age and mileage, and may simply reflect a vehicle that has had component replacements carried out between tests rather than borderline items left for the examiner to record. Overall the test trend is stable rather than worsening, but the repeat of fail-then-pass sequences with no recorded causes warrants careful physical inspection. With 137,682 miles recorded over approximately eleven years, this Superb is covering around 12,500 miles annually, which is high for the class and places above-average demand on consumables and mechanical components. There is a notable testing gap between March 2019 and August 2021, suggesting the car may have been either off the road, recently imported, or operated without a valid MOT certificate for a period. High annual mileage of this level accelerates wear on diesel-specific items such as dual-mass flywheels, EGR valves, turbochargers, and timing belt components, as well as suspension bushes, coil springs, and brake discs. The mileage progression between tests also appears steady rather than erratic, which is consistent with regular use rather than clock anomalies, though this should be corroborated against service records and dashboard consistency. A prospective buyer should focus the physical inspection on the areas most stressed by sustained high-mileage diesel running. On a test drive, listen for clonks or knocks from the front suspension over speed humps and broken tarmac, which would indicate worn lower wishbone bushes, anti-roll bar drop links, or top mounts. Pay close attention to the clutch and gearbox behaviour; a juddering clutch under load or a slipping sensation when pulling away in third gear can point to dual-mass flywheel wear. Diesel particulate filter health is critical at this mileage, so check for intermittent loss of power under hard acceleration, frequent regeneration cycles indicated by a cooling fan running loudly after shutdown, and any dashboard glow-plug or emissions warning lights. Inspect under the bonnet for oil leaks from the cam chain area, EGR cooler staining, and any evidence of timing belt replacement paperwork, as the 2.0 TDI unit is particularly sensitive to belt interval overrun. Brake system condition should be a priority given the accumulated mileage and lack of recorded advisory history. On test, verify there is no pulling to one side under firm braking, no vibration through the pedal, and no grinding or squealing from the discs, particularly at low speed when the wear becomes audible. Check the underside thoroughly for corrosion on the rear subframe mounting points, fuel lines, and brake pipes, as Superbs of this generation are known to develop surface rust in these areas even when not flagged at MOT. Examine the exhaust system from the manifold rearward for blueing of the turbo housing, weeping joints, and any signs of DPF removal or tampering. Given the unexplained recent failure, it is prudent to ask the seller directly what rectification work was carried out between 20 February and 25 February 2026, and to obtain documentation supporting any repairs before committing to purchase.