Loremo: The Ultra Efficient Car – 157MPG! The Loremo LS is powered by a 2 cylinder Turbo Diesel engine with 20 hp and 160km/h top speed. The amazing thing is that the Loremo only needs 1.5l per 100km. This is approx. 157MPG! The Toyota Prius hybrid has only 55MPG (combined city and highway). With one tank (20l) you could drive 1,300km.