We consider an oligopolistic market where firms compete in price and quality and where consumers are heterogeneous in …-inefficiency of the price/quality offers. But, better price/quality combinations are signalled with lower prices in one type and with …

margins of gas stations. We find that the MTU fostered a more intense competition, with a reduction in price margins of 1 …To increase competition in the retail market for gasoline, Germany's Federal Cartel Office established the so … fixed effect methods and a difference-in-difference approach, this study investigates the impact of the MTU on the price …