Continuing nuclear contamination fears are prompting Japanese automakers to "take all measures required," although nothing concrete has yet been established.

The Japan Automobile Manufacturers Association (JAMA) says where its members have production bases or related facilities, radiation levels do not represent any threat to human health.

However, some speculation has arisen as to whether or not radioactive material could be present in some product, leasdng JAMA to say its members will take "all measures required."

"We don't think there is any risk, but we need to to show it is OK [although] we don't have any answer yet," a JAMA spokeswoman in Tokyo told just-auto.

"Some people say Japanese car[s] may have problem[s] and then we worry. We are thinking how [we] can prove it is OK."

Concern has been prompted by the severely damaged nuclear power station operated by the Tokyo Electric Power Company in the Fukushima Prefecture north of the capital.

The situation has led JAMA to issue a statement saying radiation levels do not represent a human threat, although stressing it needs to reassure purchasers.

"One of our fundamental responsibilities is to ensure that customers, both in Japan and overseas, are always able to use automobiles manufactured domestically in Japan with complete peace of mind," said JAMA chairman Toshiyuki Shiga.

"This is why the entire Japanese automobile industry will be immediately taking all measures required to demonstrate clearly to the public the safety of its products."