Korean giants Hyundai and Kia are recalling more than 1.8 million cars in the US.
In what could be the biggest recall of its type for the two firms, more than 1.8 million models are being recalled due to a faulty brake switch.
One million Hyundais are affected – models include the 2011 Sonata; 2007-10 Elantra; 2010-11 Genesis Coupe; 2007-2011 Sanata Fe; 2007-09 Tucson and the 2008-09 Veracruz.
Meanwhile sister firm Kia is recalling the 2011 Optima, 2007-10 Rondo; 2007 Sedona; 2007-11 Sorento; 2010-11 Soul and the 2007-10 Sportage.
A faulty brake switch which causes the brake lights not to illuminate is the reported cause of the recalls. The switch is also causing the cars' cruise control systems to remain on, the push-button starter not functioning correctly and the gearbox shift not disengaging – causing the gearbox to be stuck in Park mode.
In a statement both firms said the faulty switch "could increase the risk of a crash".
Owners are being notified as soon as possible, with Kia sending notification to owners next month and Hyundai recalling cars by June.
Hyundai and Kia are currently assessing whether any models in Europe are affected.
Speaking to AOL Cars, a Hyundai Motor UK spokesperson said: "We are not aware of any cars in Europe being affected by the faulty brake switch.
"This is very much a US-only recall – but naturally under due diligence Hyundai and Kia are assessing other markets to see if they are affected. But to our current knowledge, European models are not."
It's not the first time Hyundai and Kia have had to recall cars due to a faulty brake switch. Nearly a million cars were recalled for the very same fault in 2009.