CARSON, Calif.

— Car parts are an expensive, time-consuming process, requiring an extensive, expensive and potentially dangerous maintenance schedule.

In some cases, parts suppliers may be required to keep cars from rusting or being lost.

But in many cases, they’re not.

The cost of a car can be higher than its cost of ownership, according to the annual study of car parts suppliers by the American Automotive News.

For example, the cost of parts to replace a broken transmission can reach as much as $1,000 or more, according the study, which was conducted for

That’s because the maintenance schedule for parts suppliers is a combination of what parts cost in the past, the new costs of new parts, and a combination that could be adjusted in the future, according John Krieger, vice president of business development at Kriegers Automotive Parts.

The cost of maintenance is based on what the manufacturer has done with the vehicle, said Michael Sivak, vice-president of product management at Krieg Automotive Products.

The manufacturer has not been perfect with its product over the years.

“So we have to look at what’s available and we’re going to try to find ways to make things work,” Sivack said.

Some parts suppliers make their own parts.

For instance, a vehicle’s drivetrain may have had a broken drive belt, or the transmission may have been removed.

If parts suppliers don’t know how to do these things right, they’ll often be more expensive to replace, said David DeSimone, director of research at Kelley Blue Book.

“The price is going to rise because the manufacturer is going down the line and has to make repairs,” he said.

The study did not examine the cost to the consumer, though a 2013 study by the U.S. Department of Energy found that consumers paid an average of $3,300 per car to replace the drive belt on cars made between 2005 and 2009.

The average cost for replacement parts on those cars was about $8,000.

The price of replacement parts may not be what’s being charged to consumers, though, because they may be on a list of items that have been reduced in price in an effort to reduce the cost.

For instance, Krieg said parts suppliers are often required to include a cost-plus reimbursement plan on parts purchased by customers who don’t qualify for free parts, according a 2012 survey by Kelley Blue Books.

That reimbursement plan covers parts purchased without any prior authorization.

That means parts suppliers might charge consumers less if they pay full price or pay the full cost of repairs before receiving the replacement parts.

The U.N. has made some recommendations for companies to ensure the safety of their parts suppliers.

The U.K. has set up a Safety Advisory Committee to look into the costs and benefits of parts suppliers, according DeSimones.

He said that the committee is in the process of identifying a list that companies could use to report safety risks.