Changing brake fluid can be a slippery subject. Some manufacturers include it in their maintenance schedules and others don't.
Mercedes-Benz, for example, says brake fluid should be replaced every two years or 20,000 miles, and Volkswagen says that should be done on most of its models every two years regardless of mileage. Subaru recommends fresh brake fluid every 30,000 miles.
On the other hand, most Chevrolets can go 150,000 miles or 10 years, according to Chevy's maintenance schedule, and many Ford, Chrysler and Toyota vehicles don't list brake fluid as a regular maintenance item.