Porizkova, who married The Cars' former frontman in August 1989, made the announcement on social media on Wednesday, reports People Magazine.
"Our family always has been - and still is - a well-built car," Porizkova wrote in an Instagram post.
"When the four of us are together, we can go wherever the road takes us. But as a bicycle, my husband and I no longer pedal in unison. So we're ditching the bicycle. Ric and I have been peacefully separated for the past year. The photos of our happy family are, in fact, happy family photos; we are just no longer a couple," Porizkova added.
The former couple has two sons - Jonathan and Oliver.(ANI)