Dutch prosecutors said on Monday they will investigate possible misuse of vehicle emissions software by Suzuki and Fiat Chrysler's Jeep.

They were responding after the Dutch road authority (RDW) found that the Jeep Grand Cherokee and Suzuki Vitara models produced unacceptably high levels of toxic emissions during road tests.

The RDW said that there are approximately 27,000 of the Jeeps and 42,000 of the Suzukis on European roads.