hello bro zenix
i am looking to buy a used conti car with a budget arouind 20k
browse through mudah and found a few i liked
what say you about the quality and maiantenance as well as fuel efficiency for these models?

Volvo S80 year 2000
Mercedes Benz C180 year 94-97
Peugeot 407 Year 2000

Which u think is the best in, i am particularly worried about the cost of maintenance and fuel efficiency.
Thanks in advance, any further suggestion would be much appreciated