2018 KTM 390 Duke 18 0.4L Petrol · CX68 YMZ

The latest official DVSA MOT test for this 2018 KTM 390 Duke, conducted on 15 July 2025, resulted in a Pass with no defects or advisories recorded, and the single prior test on 10 September 2024 also returned a clean Pass with no recorded defects. With no advisories on file and no fail points having been documented in the available history, the official roadworthiness trend is clearly stable, and there is no recorded evidence of deteriorating mechanical condition. However, given the eight-year age of the motorcycle and the very limited annual mileage, a prospective buyer should be mindful that a clean MOT history does not always reflect the true mechanical state of a lightly used machine, as standing-related degradation is not always captured during a roadworthiness examination. Against a recorded odometer reading of 1,513 miles on an eight-year-old motorcycle, the implied annual usage is roughly 189 miles, which is exceptionally low for any road vehicle and particularly for a sporting naked machine of this nature. Such low mileage is not necessarily a wholly positive indicator, as prolonged periods of standing can be just as damaging to certain components as heavy use, particularly where rubber, seals, electrolytes, and brake surfaces are concerned. The two recorded MOTs in 2024 and 2025 represent the minimum legal compliance cycle rather than evidence of regular riding, and a buyer should expect to find some calendar-related wear even if the mileage figure itself looks attractive. Because the recorded MOT history is clean and the mileage is sparse, age and time-based deterioration should form the focus of any physical inspection. Tyres fitted at the time of original supply are likely to have suffered extensive sidewall perishing and dry rot after eight years regardless of remaining tread depth, and any original or early production rubber should be replaced on safety grounds, as perished sidewalls can fail catastrophically under load. The 12V battery is highly likely to be at the end of its service life or in a severely discharged state from long periods of inactivity, so its resting voltage and ability to hold charge under cranking should be checked before purchase. Brake discs should be inspected closely for surface corrosion and pitting from standing, the caliper pistons should be confirmed as free rather than binding, and both brake and clutch hydraulic fluid should be assumed to require replacement due to calendar-based hygroscopic degradation rather than mileage-related wear. Further inspection should centre on items that suffer purely from the passage of time rather than use. Fuel system components, including the tank, lines, and injectors, may have suffered internal degradation or moisture ingress, particularly if the machine has been left standing with stale fuel, and a drain of the fuel filter and tank contents is advisable. Drive chain and sprocket condition should be examined for corrosion and stiff links from standing, even at this mileage, and rubber items such as fork seals, dust covers, and suspension bushes should be checked for perishing and fluid leakage. Coolant, where fitted to the liquid-cooled engine, will almost certainly be past its recommended service interval and should be tested for pH and freezing protection. Finally, the service book and any supporting documentation should be carefully verified, as genuine dealer or specialist servicing stamps are the most reliable evidence that time-sensitive items such as valve clearances, throttle body balance, and lubricant changes have been attended to in line with KTM's calendar-based schedule. A short running test should be performed to check for cold-start smoke, irregular idling, misfires, clutch drag, and any warning lights on the dash, all of which are common symptoms of neglect in low-mileage motorcycles of this age.