BERLIN—European car makers have an SUV problem: They are selling too many.
Under European Union rules adopted in 2009 to fight climate change, car makers in Europe must cut average carbon-dioxide emissions for their fleet to 95 grams a kilometer this year or face sanctions. It is becoming harder for many auto makers to achieve this level because of the waning appeal of diesel cars, which have relatively low CO2 emissions, a shortage of electric vehicles and now a surge in SUV sales.
“SUVs…
