One thing that really grinds my gears is seeing customers charged more than Mercedes-Benz retail for parts. It damages the trade, the garage reputation, MB reputation & in some cases costs both parties more in the end.
More specifically, a ‘ dull plopping noise from the intake manifold – when the air filter is removed’. In our case, all the time – the customer had complained for a little while that the engine was noisy. It sounded a bit odd but there wasn’t anything specific that we could say at that point. Until it got worse and it was at the point that it needed