2017 Mercedes-Benz C 2.0L Petrol · FP67 ASV

The roadworthiness profile for this 2017 Mercedes-Benz C-Class is defined by an unusual testing pattern that demands careful scrutiny. Across the available DVSA history, there are two consecutive instances in 2024 and 2025 where a failure was immediately followed by a pass on the very next day, with no advisories or defects recorded on either side. While the clean advisory record superficially suggests a well-maintained vehicle, this rapid-fire pass-fail sequence can sometimes reflect tester-to-tester variability rather than genuine mechanical deterioration. It is also worth noting that no defects are recorded at all across any test, which is atypical for a nine-year-old vehicle and raises a minor question about whether all items were inspected to the same standard on each occasion. Mechanically, however, the vehicle emerges from its most recent test on 23 September 2025 with a clean pass, and the overall trend across three documented tests is one of stable roadworthiness on paper. The recorded mileage of 47,115 miles across nine years equates to roughly 5,235 miles per year, which is notably low for the vehicle's age and sector. This level of accumulation is consistent with short urban journeys, a commuter-driven second car, or extended periods of inactivity rather than regular long-distance use. For a Mercedes-Benz of this generation, such low annual mileage can produce mixed mechanical consequences: the engine, transmission, and drivetrain benefit from reduced wear, but prolonged standing periods place greater stress on the 12V battery, brake discs and pads (which can corrode and glaze through lack of use), and various rubber components including suspension bushes, gaiters, and coolant hoses. Additionally, the test history shows a gap of over a year between the August 2023 pass and the November 2024 test, which may correspond to a period off the road or an expired MOT, and any such lay-up increases the likelihood of dried-out seals and seized calipers. Given the absence of any specific recorded advisories, there is no defect history to investigate directly, but the combination of low mileage, multi-year lay-ups, and the recurring same-day pass-fail pattern means a thorough pre-purchase inspection is essential. On a road test, pay particular attention to brake pedal feel: low-mileage Mercedes vehicles are prone to binding rear calipers that may not show as a failed MOT but can cause uneven pad wear and pulling under braking. Listen for clonks or thuds from the front suspension over speed humps and uneven surfaces, as the coil springs, upper and lower control arm bushes, and anti-roll bar drop links are common wear items on the W205 platform regardless of mileage. Steering should be checked for vagueness around the straight-ahead position, which can indicate worn tie rods or front thrust arms. Under the bonnet, inspect the engine oil filler cap and surrounding areas for mayonnaise-like residue or milky deposits, which would suggest a failed head gasket or a chronically short-running engine that never reaches full operating temperature, a common consequence of low-mileage urban use. Examine the underside for any signs of oil seepage from the rocker cover gasket, a well-known weak point on these engines, and check the condition of the lower wishbone arms and rear subframe mounting points for corrosion, even though no structural advisories were recorded. The exhaust system, particularly around the mounting rubbers and flexi-section, should be inspected for rattles. Finally, verify that all warning lamps extinguish promptly after start-up, that the air conditioning delivers cold air consistently, and that the infotainment and electronic selector respond without delay, as intermittent electrical faults are a known characteristic of this model that may not surface during a standard MOT check.