if your handy with a spanner its easy to do yourself. spark plugs, oil filter air filter pollen filter are all easy to do if access is ok.
coolant level should be checked weekly anyway. i do this with checking the oil brake fluid and top up the screenwash
i prefer to do things myself. it means my cars get the correct spec and high quality oil.
so many cars are neglected now a days
my missus ka shows 40000 miles for spark plugs and 50000 miles for a fuel filter
for the cost and how easy to fit they are i do them every year
