No different than any other car (its easy). See related link for detailed step by step instructions with pictures.
http://www.carspace.com/guides/Toyota-Echo-How-to-change-oil
For my 2002 Echo it is 3.7 Liters with a filter change.
http://groups.msn.com/Sorensonbrian/oilchange.msnw
Every 8000 km,or 6 moths.
depends on the oil you use, recommended for mineral 5000km for synthetic 10000km
You have to take out the engine to get to it.
Which bulb are you trying to change?
$5.50 for the oil (3.7 liters or 3.9 quarts, 5-30 SAE) $5 for the filter
hi i have smal question,how to change thermostat in Toyota echo 2000 thanks
3.6 litres
3.6 liters
3.5 Liters