Automakers recalled record numbers of cars in 2014, and a lot of those recalls haven’t been fixed. Use these tips to ensure that your car is safe.

People are racing to look up whether their car is affected by one of the largest automobile recalls in history, and the National Highway Traffic Safety Administration’s website is overloaded with traffic.

The administration’s site allows car owners to look up their automobile by make and model to see if it’s part of a recall. However, the service is slow Wednesday after 33.8 million air bags were recalled by the Japanese manufacturer Takata.

“(Tuesday) NHTSA’s VIN lookup site received 571,000 lookup requests,” Gordon Trowbridge, the administration’s communications director, told USA TODAY Network in an email.

“For comparison’s sake, the daily average for May 11-14 was 9,600 searches,” Trowbridge wrote.

NHTSA posted this warning on its site: “This site is experiencing unusually high volume and may cause delays or disruption in some functionality. If you experience a disruption then please visit later to conduct your search. We apologize for any inconvenience and thank you for your patience.”

Individuals experiencing issues with NHTSA’s site can try checking on the recall section of their car manufacturer’s website, according to Consumer Reports. Car owners will need to know their car’s Vehicle Identification Number, often located on the dashboard or inside the driver’s side door.

However, car owners may need to wait a few days to confirm whether they’re affected.

“Until the auto companies are able to process the information from Takata’s filings yesterday, (NHTSA) will not have VIN data that reflects these expanded recalls,” Trowbridge said. “We expect to have that data sometime next week.” New information will be published on the sites’s “recalls spotlight” page.

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