Kia Motors Corporation and affiliate Hyundai Motor Company are recalling around 534,000 vehicles that are potential risks. The vehicle’s engines might be at risk of blowing up.

Hyundai and Kia say they are recalling 155,000 2011-2013 Tucson vehicles and 2011-2012 Kia Sportage vehicles over possible oil pan leaks. This also affects 378,000 2012-2016 Kia Soul vehicles over engine damage and fire risks.

In February, likewise, the companies also recalled 168,000 vehicles for fire risks. Altogether, the car makers have recalled over 2.3 million vehicles since 2015 due to various engine fire risks. A criminal investigation was launched against the South Korean automakers in November 2018. They wanted to determine the proper conduction of the vehicle recall.

The United States National Highway Traffic Safety Administration in May 2017 also opened a formal investigation into similar recalls on almost 1.7 million Hyundai and Kia vehicles.

So far, there have been no reports of injuries or accidents in connection the vehicles recalled. The company said a high exhaust gas temperature prompted the latest recall. This heat may damage the catalytic converter and other important components of the car. Dealers will now upgrade the software to prevent this problem.

They will carry out the software upgrades on the 3.7 million vehicles not yet recalled. The update will potentially protect the vehicles from internal damage. The company will also offer new extended warranties for engine issues.