Mark X is a gud car.....
Its electric power steering (EPS) often malfunctions, it burns sometimes and then needs to be replaced, not that expensive but this is one of the most common faults in this car........ask a gud workshop which gets a lot of mark x'es and he'll tell u this....
Spare parts are quite scarce and expensive and u mostly have to either import or go to peshawar etc to get parts from disassembled smuggled cars......
One of the major toyota workshops once told me that new injectors cost around 20k in total ( u need to replace them if u run on ethanol enhanced fuel ( such as PSO ) becuz $HIT will get stuck in them ).......
The car requires app. 7 liters of engine oil, no power steering oil....and i have no idea about transmission oil, u'll have to confirm from a gud workshop....
fuel capacity is 70liters, range = 500km or so...
speed limiter = 180km/hr
top speed= 180km/hr ( I have tested that )
so it depends on how much u r spending currently on ur merc and then u can compare in with mark x......
Otherwise its a gud car....gives app 8-10km/liter and 0-100 in 7sec.s
thanks
Son of owner....