Volkswagen isn’t the only automaker now under investigation for possibly cheating on diesel emissions tests.

German car regulators have announced that they will expand their investigation into suspected diesel emissions manipulation to more than 50 models from various automakers including BMW, Mercedes-Benz, Ford, GM, Honda, Hyundai and Toyota.

The Kraftfahrt-Bundesamt (KBA) regulator has said that it would begin running tests on models made by 23 German and foreign car brands on suspicion of further manipulation of nitrogen oxides emissions. The tests are the result of Volkswagen admitting that it has cheated on diesel emissions tests.

The watchdog has been comparing readings from a test setting with those from portable meters in real-life tests and two-thirds of the measurements had already been taken.

Models being investigated by KBA include the BMW 3 Series and 5 Series; Mercedes-Benz C-Class, CLS, Sprinter, V-Class; Smart Fortwo, Alfa Romeo Guilietta, Panda, Ducato; Jeep Cherokee, Ford Focus and C-Max; Volvo V60; Opel Astra, Insignia and Zafira; Chevrolet Cruze; Honda HR-V; Hyundai iX35 and i20; Land Rover Evoque; Mazda6; Mitsubishi ASX; Nissan Navara; Peugeot 308; Renault Dacia and Kadjar; Toyota Auris; Volkswagen Golf, Beetle, Passat, Touran, Touareg, Golf Sportsvan, Polo, Crafter and Amarok; Audi A6 and A3 and the Porsche Macan.

“Since the end of September, KBA has been investigating whether further manipulation of emissions, of nitrogen oxides in particular, is taking place in the market,” KBA said in a statement.

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