# She only drove it to church on Sundays. Good/Bad?

**URL:** <https://boards.straightdope.com/t/she-only-drove-it-to-church-on-sundays-good-bad/746814>\
**Category:** In My Humble Opinion\
**Created:** [February 22, 2016, 5:44pm UTC](https://boards.straightdope.com/t/she-only-drove-it-to-church-on-sundays-good-bad/746814 "2016-02-22T17:44:39Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![Machine\_Elf](https://avatars.discourse-cdn.com/v4/letter/m/82dd89/32.png) [@Machine\_Elf](https://boards.straightdope.com/u/Machine_Elf)\
**Post date:** [February 22, 2016, 9:00pm UTC](https://boards.straightdope.com/t/she-only-drove-it-to-church-on-sundays-good-bad/746814/7 "2016-02-22T21:00:01Z")

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> [@ReticulatingSplines](#):
>
> I agree that the effect on the engine isn’t terrible compared to other cars (I mean, you’re going to have to go through the cold start no matter how far you drive after that) but what about rust in the exhaust system from unevaporated water?

:smack: Good point, I totally forgot about that. Buyers of church-commute cars should anticipate that the car will need a new exhaust system sooner than a highway-driven car would. The difference is even greater in cold climates: you can often see recently-started cars drooling liquid water from their tailpipes when they pull away from stops. It takes a while to heat the exhaust system enough to evaporate all that water.

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