1) The electrics don't give any regular faults on this model. Just a few random things which you'd get on any other car. Things to watch out for though are flat batterys, airmatic pumps that keep running/run very often/noisy, intercooler circulation pump relays jamming on which burn out the pump.

2) The autos are very good, they are fill for life oil so servicing isn't required. I would suggest that you do get the oil and filter replaced every 120,000km/70,000mi though as it's alot cheaper than a rebuilt auto.

3) engines are also strong but do require air filter and supercharger drive belt replacement every 2 years/60,000km/40,000mi). Spark plugs are expensive to do every 4 years (16 iridium/platnum plugs). you may encounter a misfire which is usually a ignition lead. For the performance they give they aren't that expensive to run.

On W220's watchout for front lower ball joint noises (4 Lower ball joints on these models)

__________________
Alex.

MB Tech
Sydney, Australia
Volvo 122S
W201 190D 2.5 manual
W202 C240
W203 C32