I have owned my 92 400E for 2.5 year, put only about 45K km on it, I did all the jobs by myself, so my cost of maintenance is lower(relatively lower), I spent about $4000cdn($2920 US) for parts and material over 2.5 years, which is $1168/year, I wouldn't even think about how much it would have been if I were not a DIYer, 3-4 times more?

I have owned my 96 For Explorer for 4 years, put about 80k km on it, it cost a fraction of the cost of Mercedes to maintain, my repair and maintenance records shows only O2 sensors, heater control valve, IAC valves and regular maintenance item, the cost is about $1100 US over 4 years, which is about $277US/year. Compared with my Mercedes, it has been deadly reliable.

Guess that's why people think I am rich even I drive a 12 years old Mercedes.

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99 BMW 540i 6-speed 110K Km
03 SAAB 9-5 wagon 80K Km
92 400E (Sold) 245K km
Still missing the days with the Benz, it kept me busy.