I bought a 4 month old Honda Accord in 2008 (2007 model) for QAR 60,000 (full option). It had done around 6,000 kms and had a service package with Domasco (Honda). Till date everything has been covered under the service package and the service of honda has been awesome.My only cost has been car renewal and insurance :-)
When buying second hand/used, you need to check the car thoroughly - if not you'll end up with a lemon and will spend more on maintenance than the savings on ur used car.Check whether the previous owner had maintained his car well else it will cost you quite a bit.
I love my cars and enjoy regularly maintaining it even though i barely cover any miles.My 2007 accord drives and smells like new :-)