My W169 is 6.5 years old. The near-side mirror adjustment fails to respond to control. On phoning Mercedes to book it in for repair, I’m quoted £110 labour ‘just to look at it’. On the day, after waiting an hour while they ‘look at it’, a technician reports back that they have attempted to free-up the mirror - and it now works. The cost? Nothing. Nada. Zilch. Gratis. So, it’s impossible to believe what one is told of the likely cost of repairs on older cars.