There are some people I know who have their cars serviced every week. While that's definitely is great I find it to be rather costly since getting their cars serviced once a month would work just as well. Personally, I prefer monthly maintenance because it's a lot friendlier to the wallet and you avoid everything else that comes with failing to have your car serviced regularly. What of you guys? How often do you service your car? Weekly? Monthly? Twice a year?