Is a Mazda 1.5 engine an interference engine?

Yes it is. "Interferance" refers to the valves travel interfering with the pistons travel on an engine that is spinning free of timing chain/belt.

yes, change this engines timing belt every 10,000 miles or you will damage the engine if it breaks while driving.

Quite possibly. Nissan's are bad for that. Not good news if you break the timing belt. That is why I tell people the following: It is better to take a vehicle in and have the timing belt changed at...

I researched this as I own a Mazda Protege with a 2.0 DOCH engine. I found a file that list all interference engines and timing belt requirements. The Mazda 2.0 L is listed as a interfrence engine...

yes most current engines are interference engines