Is the engine in a mk2 mondeo the same as a mk3 (00-03)

No, they're different. The Zetec-E is a Ford design, the Duratec-HE is a Mazda engine.

http://en.wikipedia.org/wiki/Mondeo#Engines_3

V6 engines are the same though.

the 2.5 is anyway.

There is some differences from mk2 to mk3 v6, and just to clarify you cant put a v6 into a 4-pot mk3 without a whole host of other changes (the thread op may have misunderstood why you mentioned the v6)

Is the 2.5 V6 considered inferior to the 3.0? I ask since it's essentially from the Mk2 generation.

Of the three engines, it's HP efficiency for displacement is the worst... 143 HP for the 2.0, 220 for the 3.0, but only 170 HP for the 2.5... Seems to make it a bad choice being not all THAT much more than the 2.0.

percybigun said:

There is some differences from mk2 to mk3 v6, and just to clarify you cant put a v6 into a 4-pot mk3 without a whole host of other changes (the thread op may have misunderstood why you mentioned the v6)

Click to expand...

Gotchya. And yep the thread title did throw me a bit.