Two popular models have come under investigation by the National Highway Traffic Safety Administration (NHTSA) for unrelated safety issues that could potentially injure drivers.

While no accidents or serious injuries have been reported yet, used models of the Nissan Altima and Jeep Wrangler both apparently have flaws that drivers need to be aware of.

On the Altima, the issue is related to the brake master cylinder. Apparently, this part can wear down over time and begin to leak. While these leaks will trigger a sensor and warning light, the onus is on the driver to heed this light and bring the car into the shop. If the light is ignored, it could potentially lead to a loss in braking fluid. The NHTSA is looking at approximately 440,000 vehicles made between 2007 and 2008 for this specific issue.

The Wrangler issue is also restricted to 2007 and 2008, although the problem is limited to 220,000 units. In rare cases, an electrical shortage can cause the airbag to not deploy properly, which could prove problematic in a collision.

Drivers interested in purchasing a used car should do some research on any recent recalls to make sure that the model they're considering isn't on the list for a safety issue. Once ready to buy, drivers can visit New Jersey State Auto Auction to shop a wide range of models at affordable prices.