2009 Mercedes A-Class 2.0L Diesel · MH08 MAZ

The 2.0-litre CDI diesel in the A-Class W169 typically returns 45-55 mpg in mixed driving, though real-world figures on a 17-year-old example are likely to sit towards the lower end of that range. Road tax for a diesel of this era and engine size usually falls into a mid-to-high band, so expect £150-£200+ per year unless it qualifies for any historic vehicle considerations approaching. Insurance for a 2009 A-Class diesel generally sits in groups 16-22 depending on trim, so a typical premium for a middle-aged driver would be in the £400-£600 range annually. Routine maintenance such as oil services, brake fluid, and filters will be in line with most family cars, but parts with a Mercedes badge tend to carry a premium — expect £250-£400 for a main dealer service and £150-£250 at an independent specialist. Timing chains on the 2.0 CDI are generally robust but ancillary items like water pumps, EGR valves, and turbo actuators can fail with age. Allowing for fuel, tax, insurance, and routine maintenance, an annual running cost of £2,200-£2,800 is a reasonable working figure.

Because only one MOT result is available, a physical inspection becomes even more important than usual. Check the underside of the vehicle on a ramp if possible, paying particular attention to the front subframe, wishbones, and anti-roll bar links, which are common wear items on W169 models. The 2.0-litre CDI engine should be started from cold — listen for any rattling from the timing chain area on start-up, which can indicate stretch. Also inspect the turbo and intercooler piping for oil residue and check the EGR valve for carbon build-up, both well-known weak points on this engine.

Inside the cabin, verify that all electrical functions work — the COMAND or Audio system, electric windows, mirrors, and air conditioning are all areas where W169 A-Class cars can develop faults. Test the gearbox thoroughly, whether manual or the CVT/CVT-style automatic fitted to some variants: any juddering or hesitation points to clutch or flywheel concerns on manuals, or torque converter wear on automatics. Finally, examine the bodywork closely for evidence of accident repair, particularly around the front wings and bumper mounting points, as the W169's plastic panels can mask underlying structural damage that wouldn't necessarily show on an MOT.