The 2002 Toyota Avensis LS is moderately easy to maintain. The components of the spare tire are easily accessible in the rear of the vehicle, keeping them ready to go in case of emergency. The brake fluid reservoir is easily visible in the engine bay, making it easy to check and replenish the fluid level. Changing the headlight bulb is no problem, as you only have to reach behind the housing for access to it.
Some things are problematic on the 2002 Toyota Avensis LS. You must use a panel puller to pry out the front turn signal housing for access to the bulb. Changing the engine air filter with reliability will be a problem, as you will need a Phillips head screwdriver. You will have to make a tough reach in the engine bay to get to the lower radiator hose for a coolant drain.
Hans Angermeier has produced over 100,000 videos showing drivers how to fix things on their cars. He has broad expertise on basic repair procedures covering the majority of cars on the road.