Most last for at least 50 years and require little maintenance during this time.

Since his houses are new, they don't require much maintenance.

On the other hand, they cost more and require careful maintenance.

There are no moving parts and it thus requires very little maintenance.

In the 1980s, it became clear that the type required more maintenance than other vessels.

That was the major benefit of a good cut: it didn't require much maintenance.

It has very high reliability and requires little maintenance during its service life.

In the real world, of course, it requires constant maintenance.

Does this tank require maintenance, and can you give me some idea of how it works?

To be fair, E has (until last night) required less maintenance than expected.