When I was renting a car from Sixt in the Frankfurt Int'l the lady at the desk persuaded me it was a diesel one. It had the papers in German I have no idea about. I am not a car expert and cannot tell a diesel car from a gasoline. So I trusted her. Only when I filled it up with diesel somewhere in the night I realized she was wrong! Despite that, Sixt forced me to pay for the repairment job. read full review »