The world's first petrol-powered bus line began operating between which two German cities in 1895?

Siegen and Netphen

https://www.mercedes-benz-bus.com/en_US/brand/omnibus-magazin/125-years-ago-first-bus-with-combustion-engine.html

The world's first gasoline-powered bus line began operating on 18 March 1895, linking the German towns of Siegen, Netphen and Deuz in what is now North Rhine-Westphalia. It was operated by the Netphener Omnibusgesellschaft and used a Benz Omnibus designed and built by Karl Benz, the pioneer of the modern automobile.

The Benz Omnibus was essentially an early version of the motorised bus, based on the Benz Velo car but modified to carry several passengers. It had a 5 hp single-cylinder engine and could carry up to eight people at a time. The route covered about 15 kilometres (9 miles) and replaced traditional horse-drawn carriages as a means of public transport.

However, the service faced challenges, including mechanical problems and poor road conditions, which made early motorised transport unreliable. As a result, the service was discontinued later that year.

https://en.m.wikipedia.org/wiki/File:Erster_Benzin-Omnibus_der_Welt.jpg