In 2014, Mercedes-Benz presented their first Plug-in Hybrid, the S500. With a declared average consumption of 2.8 liters the S500 was the most fuel-efficient luxury car on the market. Also: when it comes to Bentley, a V8 engine basically means down-sizing. We took a look at the British brand's Flying Spur version with a smaller engine. And: the 6th generation Maserati Quattroporte.