Some cars like a BMW and a Mercedes do not require service ever so often. But models like Toyota and Honda do require annual service to be on the safe side.
It depends on your car manufacturer. You can check your owners manual or service manual to get the details. Different car manufacturers may be suggesting different intervals.
DO break it in properly. Accelerate to around 45 mph if local limits allow. Try to drive mostly on freeway (remember start and stops that happen in city driving, are hard on an engine). This allows...
Having the air conditioning serviced on your automobile costs money. The amount of money it costs depends on the servicing and parts you require. It can range from $10-$300.