Merc saloons or wagons are luxury cars. When you want luxury,why go for pre-owned luxury?
You should not worry about 'simple' things like fuel when you wanna drive an Merc,chrysler or a hammer.
I for many times have thought that a car is just that; four 'openable' walls,a roof and a set of wheels. Beyond that is luxury na kama unataka luxury,why go for second hand luxury?. Enda DT Dobie and get a demo! They will give you all info on fuel,maintenance e.t.c
Just my unsolicited opinion though!
the 124 series is good on fuel; About 8litres for 100km na ukipewa lift huko nyuma,when the driver accelerates,the feeling you get is similar to that when KQ's B 777 is racing the smooth runway at Schipol. Kawaida maintenance will cost about 8,000 but for major service i.e tie rod ends,bushes,shocks,ball joints e.t.c,prepare to spend. PS You can get your service cheaper somewhere off Jogoo road but that's exactly my point. Why park your mercedes next to my 'sandak' or a 1988 Nissan matatu in a messy yard in the name of servicing?
But it's a great car!
Everyday!