Petrol engine sounds like a diesel

Hello people I’ve recently been driving Omi or how to say in Switzerland rather, oh…mega (in a bad sense) driver. I have a 98er 2.0l v16 Caravan am actually rather VW Passat enthusiastic but somehow fell in love with this Opel My question is: My engine is actually a petrol engine sounds but like a diesel is this normal with this model or could there be a problem? Greetings from Switzerland