Reliable?

[Unit 5302]

If you're looking at the Mustang, I would have to say yes. The V-8 engined Mustangs are historically more reliable than their V6 counterparts.

The V-8 cars generally have superior running gear and higher end components while base models receive cheaper parts to keep prices low. Also, the Mustang used the same basic mainstream V8 engine (260-289-302) from 1965-1995. Ford was pretty familiar with how to build the variants of the 5.0. The 4.6L saw action in other models for at least 4 years prior to its introduction into the Mustang as well. Unfortunately the 3.8L V-6, which was notoriously problematic throughout the 1990s, didn't benefit from being in use for more than a decade.